An automated system is provided. The system includes: a manipulator coupled to: an opening forming device configured to create an opening having a predefined geometry partially into a multilayer component at a selected location on a surface of the multilayer component, where the multilayer component includes a plurality of material layers including at least a substrate and a bond coat, and where the opening exposes each of the plurality of material layers; and an imaging device configured to create an image of the exposed plurality of material layers in the opening; and a processor configured to calculate at least a thickness of the bond coat of the exposed plurality of material layers from the image and based on the predefined geometry of the opening. Methods of using the system to analyze layer thickness of a multilayer component and repair a multilayer component are also provided.
G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
A vapor separation system including a cooler having an inlet configured to receive an air-oil-water mixture, and an outlet configured to discharge separated oil and water in two different phases of matter. A first sensor is at the outlet of the cooler. A controller is communicatively coupled to the cooler, wherein the controller is configured to receive temperature feedback from the first sensor, and increase or reduce the amount of cooling, with the cooler and based on the temperature feedback, the oil-water mixture to a separation temperature configured to liquefy at least a portion of the oil in the air-oil-water mixture, while maintaining at least a portion of the water in the air-oil-water mixture in a vaporized state.
F25J 3/04 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification par rectification, c. à d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide pour l'air
F25J 3/02 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification par rectification, c. à d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide
3.
SYSTEM AND METHOD FOR GAS TREATMENT VIA MOVABLE ADSORPTION MODULE AND THERMAL CONTROL
A system includes a gas treatment system having an adsorption module, wherein the adsorption module includes a sorbent material. The gas treatment system further includes a positioning assembly configured to move the adsorption module in alternating directions along a path of travel between a first position in a first flow path and a second position in a second flow path. The gas treatment system is configured to adsorb an undesirable gas from a first fluid flow in the first flow path into the sorbent material when the adsorption module is disposed in the first position. The gas treatment system is configured to desorb the undesirable gas from the sorbent material when the adsorption module is disposed in the second position. The gas treatment system also includes a thermal control system having a first heat exchanger disposed in the first flow path and a second heat exchanger disposed in the second flow path.
B01D 53/06 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
B01D 53/08 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles selon la technique du "lit mobile"
B01D 53/74 - Procédés généraux pour l'épuration des gaz résiduaires; Appareils ou dispositifs spécialement adaptés à ces procédés
4.
MECHANICAL AND ELECTRICAL CONNECTION OF ELECTRIC MACHINES AND ELECTRICAL COMPONENTS IN AN ELECTRICAL SYSTEM USING QUICK CONNECT/DISCONNECT CONNECTORS
An approach for facilitating mechanical and electrical connection of electric machines and electrical components in an electrical system using connectors with quick connect/disconnect electrical connectors is disclosed. Each quick connect/disconnect electrical connector can be placed on the end of an electrical power distribution cable that connects with an electric machine or electrical component. The electric machines and electrical components and the electrical power distribution cables can have hollow coolant passages formed therein to receive cooling fluid from a cooling device for direct cooling of the electric machines, electrical components and the electrical power distribution cables.
A fire detection system for a gas turbine system including fire risk zones is provided. The system includes a pipe intake port proximate to each of the fire risk zones within a gas turbine system enclosure, and a manifold in fluid communication with the pipe intake port. A temperature sensor is positioned in the manifold upstream of a cooling system. The cooling system reduces a temperature of a gas flow in the manifold, allowing use of an aspirating smoke detector. An aspirating smoke detector, which is downstream of the cooling system, draws in the gas flow and detects smoke in the gas flow. A controller generates a first alarm in response to the temperature sensor detecting a temperature of the gas flow exceeding a temperature threshold, or a second alarm in response to the aspirating smoke detector detecting smoke in the gas flow.
F02C 7/25 - Prévention ou protection contre l'incendie
F01D 21/00 - Arrêt des "machines" ou machines motrices, p.ex. dispositifs d'urgence; Dispositifs de régulation, de commande ou de sécurité non prévus ailleurs
F02C 7/141 - Refroidissement des ensembles fonctionnels des fluides dans l'ensemble fonctionnel du fluide de travail
A system is provided with a controller configured to receive a computer model of a mold configured to cast a part. The computer model has a variable wall thickness of the mold thermally tailored to a geometry of the part. The controller is configured to control a manufacturing system to produce the mold based on the computer model.
A system for dynamic rating of a power grid may include a plurality of terminal units, and a controller. The terminal units may detect a voltage phasor and a current phasor at nodes of the power grid. The controller may, based on the voltage phasors and the current phasors of the plurality of nodes, determine a dynamic thermal stability power rating for each line, a dynamic angular stability power rating for each node, and a dynamic voltage stability power rating for each node. The controller may, based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, determine a dynamic system rating for the power grid. The controller may control the power grid in response to the dynamic system rating.
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
A handling system includes an elongated member including a first end and a second end, and a first bend therein. The elongated member is positioned in a slot of the turbine shroud. A base retention member extends from the first end of the elongated member to engage and retain a first end portion of the turbine shroud on the elongated member, and a sliding retainer is configured to slidingly receive the elongated member. The sliding retainer is shaped and sized to slidingly engage in the slot and selectively retain a second end portion of the turbine shroud in a handling position on the elongated member. A lock is coupled to the sliding retainer and selectively movable between a locked position in which the lock retains the sliding retainer in the handling position and an unlocked position in which the sliding retainer slides freely on the elongated member.
Disclosed herein is a bracket connectable to a stator core of an electrical machine. The bracket includes a comb portion having a plurality of teeth arranged in at least one row such that an indentation is defined between each pair of adjacent teeth. Each indentation is sized to receive a portion of a busbar therein. The bracket further includes a tab sized and shaped to be received within a mounting recess defined in the stator core, and an arm extending between the comb portion and the tab such that the comb portion is offset from the tab.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 3/14 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches avec des conducteurs transposés, p.ex. des conducteurs torsadés
H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
H02K 15/00 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques
10.
ELECTRICALLY INSULATED MULTILAYER COIL FOR ELECTRICAL TRANSFORMER
The solution proposed by the invention is a multilayer coil for an electrical transformer suitable for the use of insulating fluids which are less polluting than conventional insulating fluids. The coil (1) according to the invention is characterized in that the first overhang length (L1i), and/or the second overhang length (L2i), of at least one electrically insulating layer (12i) is greater than the first overhang length (L1j), and/or respectively the second overhang length (L2j), of at least one further electrically insulating layer (12j).
A vibration damping system includes a vibration damping element for a turbomachine nozzle or blade. A body opening extends through the turbomachine nozzle or blade between the tip end and the base end thereof. A vibration damping element includes a volute spring vibration damping element configured to be installed within the body opening in the turbomachine nozzle or blade. The volute spring vibration damping element includes a spiral coil of a metal sheet strip with a surface of the metal sheet strip contacting itself in a direction of an axis of the coil. The body opening has an inner dimension, and the volute spring vibration damping element has an outer dimension sized to frictionally engage the inner dimension of the body opening to dampen vibration. In certain embodiments, the body opening and the volute spring vibration damping element each have a conical perspective shape.
A method of repairing a turbine blade includes positioning the turbine blade within a system including a machining tool; determining a first distance between a surface of a first PSP attached to a tip shroud of the turbine blade and a datum surface formed in the tip shroud; removing the first PSP from the tip shroud; coupling a second PSP to the tip shroud; and machining a surface of the second PSP using the machining tool, wherein machining the second PSP surface includes controlling movement of the machining tool using the datum surface as a reference, such that the machined second PSP surface is located the first distance from the datum surface.
F01D 5/00 - Aubes; Organes de support des aubes; Dispositifs de chauffage, de protection contre l'échauffement, de refroidissement, ou dispositifs contre les vibrations, portés par les aubes ou les organes de support
B23P 6/00 - Remise en état ou réparation des objets
F01D 25/28 - Dispositions pour le support ou le montage, p.ex. pour les carters de turbines
A stator vane includes an airfoil having an airfoil shape. The airfoil shape has a nominal profile substantially in accordance with Cartesian coordinate values of X, Y, and Z set forth in one of TABLE I or TABLE II. The Cartesian coordinate values of X, Y, and Z are defined relative to a point data origin at a base of the airfoil. The Cartesian coordinate values of X, Y, and Z are non-dimensional values that are convertible to dimensional distances expressed in a unit of distance by multiplying the Cartesian coordinate values of X, Y, and Z by a scaling factor of the airfoil in the unit of distance. The X and Y values are connected by smooth continuing arcs to define airfoil profile sections at each Z value. The airfoil profile sections at Z values are joined smoothly with one another to form a complete airfoil shape.
A stator vane is provided. The stator vane including an airfoil that has a nominal suction-side profile substantially in accordance with suction-side Cartesian coordinate values of X, Y, and Z set forth in Table I. The Cartesian coordinate values of X, Y, and Z are defined relative to a point data origin at a base of the airfoil. The Cartesian coordinate values of X, Y, and Z are non-dimensional values that are convertible to dimensional distances expressed in a unit of distance by multiplying the Cartesian coordinate values of X, Y, and Z by a scaling factor of the airfoil in the unit of distance. The X and Y values are connected by smooth continuing arcs to define suction-side profile sections at each Z value. The suction-side profile sections at the Z values are joined smoothly with one another to form a complete airfoil suction-side shape.
F01D 9/04 - Injecteurs; Logement des injecteurs; Aubes de stator; Tuyères de guidage formant une couronne ou un secteur
F02C 3/04 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de produits de combustion comme fluide de travail ayant une turbine entraînant un compresseur
15.
METHOD FOR OPERATING A COMBUSTION SYSTEM, COMBUSTION SYSTEM AND GAS TURBINE ENGINE COMPRISING THE COMBUSTION SYSTEM
Disclosed is a method enabling operation of a combustion system with at least two serially arranged combustion zones on fuels generally yielding varying flame speeds. First, the operating parameters of the gas turbine engine are determined (110). Control parameters for control means configured to distribute a total fuel mass flow to the individual combustion zones are determined dependent upon the gas turbine engine operating parameters (120). Information about the fuel composition is determined, in particular the relative fraction of the at least one combustible species having a higher flame speed than a first combustible species is quantified (130). Dependent on said information about the fuel composition the control parameters for the control means 23 may be adjusted (140). The control parameters are forwarded to the control means as control signals (150).
Liquid fuel systems and methods are provided. A liquid fuel system includes a mixing unit and a plurality of liquid fuel supply systems. Each liquid fuel supply system is fluidly coupled to the mixing unit. The liquid fuel system further includes a controller communicatively coupled to the mixing unit and the plurality of liquid fuel supply systems. The controller includes memory and one or more processors. The memory stores instructions that when executed by the one or more processors cause the liquid fuel system to perform operations including providing one or more liquid fuels from the plurality of liquid fuel supply systems to the mixing unit. The operations further include mixing, with the mixing unit, the one or more liquid fuels to create a liquid fuel mixture. The operations further include providing the liquid fuel mixture to a combustion section of a turbomachine.
A guide for cutting a dowel pin of a rotor assembly is provided. The guide includes a catch basin, including a first catch basin portion and a second catch basin portion, and a shim. The first catch basin portion and the second catch basin portion form a cutting tool receiver. The shim extends from a first edge having a cross-section that is complementary to a surface of the rotor assembly. The first catch basin portion and the second catch basin portion form a receptacle that accommodates and retains portions of a dowel pin during and after removal of the dowl pin from the rotor assembly. The cutting tool receiver is defined by a receiver edge configured to guide a cutting surface of a cutting tool through a cross-section of a dowel pin.
B23D 47/02 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers d'agencements de guidage de la table de travail ou du chariot porte-scie
A method of forming a directionally- solidified casting component using a casting system is provided. The casting system includes a chamber having a heating zone and a cooling zone separated by a baffle plate. The method includes pouring an alloy in a liquid state into a mold shell. The mold shell is positioned on a chill plate within the heating zone. The method further includes moving the mold shell from the heating zone into the cooling zone. The alloy transfers from the liquid state to a solid state within the mold shell while moving the mold shell from the heating zone to the cooling zone. The method further includes contacting the mold shell with a heat transfer member.
A casting system for forming a directionally-solidified casting component is provided. The casting system defines an axial direction, a radial direction, and a circumferential direction. The casting system includes a chamber and a baffle plate disposed within the chamber. The chamber and the baffle plate collectively define a heating zone and a cooling zone. The heating zone and the cooling zone are separated by the baffle plate. The casting system further includes a shaft and a cooling plate disposed on the shaft. The cooling plate is movable between the heating zone and the cooling zone. A mold shell is disposed on the cooling plate. The casting system further includes a cooling system for directing a coolant fluid towards the mold shell.
A transceiver system may include a transmitter, a receiver, an antenna port that is connectable to the transmitter or to the receiver, a filter send port, and a filter return port. The filter ports may be antenna-side or receiver-side, and connectable across at least one filter between the antenna port and the receiver. A transceiver apparatus may include a housing including the transmitter, the receiver, a transceiver switch, and a filter switch assembly in a chamber of the housing. The ports may be accessible through a wall of the housing. A method for filtering a signal include switching, in response to a first signal, a receiver or a transceiver of a transceiver system from an unfiltered path connected to the antenna port to a filtered path connected to the antenna port. The method may further include switching, in response to a second signal, the receiver to the unfiltered path.
H04B 1/525 - Dispositions hybrides, c. à d. dispositions pour la transition d’une transmission bilatérale sur une voie à une transmission unidirectionnelle sur chacune des deux voies ou vice versa avec des moyens de réduction de la fuite du signal de l’émetteur vers le récepteur
H04B 1/3822 - TRANSMISSION - Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission Émetteurs-récepteurs, c. à d. dispositifs dans lesquels l'émetteur et le récepteur forment un ensemble structural et dans lesquels au moins une partie est utilisée pour des fonctions d'émission et de réception spécialement adaptés à l'utilisation dans des véhicules
A system includes a gas treatment system having first and second gas capture systems and a steam supply circuit. The first gas capture system is configured to capture a first portion of an undesirable gas from a combined cycle power plant. The second gas capture system is configured to capture a second portion of the undesirable gas from the combined cycle power plant, wherein the first and second gas capture systems are arranged in series relative to a fluid flow path through the combined cycle power plant. The steam supply circuit includes a first steam supply line coupled to the first gas capture system and a second steam supply line coupled to the second gas capture system. The steam supply circuit is configured to couple to and receive steam from a heat recovery steam generator (HRSG) and/or a steam turbine system of the combined cycle power plant.
F02C 6/00 - Ensembles fonctionnels multiples de turbines à gaz; Combinaisons d'ensembles fonctionnels de turbines à gaz avec d'autres appareils; Adaptations d'ensembles fonctionnels de turbines à gaz à des applications particulières
F02C 3/00 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de produits de combustion comme fluide de travail
F01K 7/16 - Ensembles fonctionnels de machines à vapeur caractérisés par l'emploi de types particuliers de machines motrices; Ensembles fonctionnels ou machines motrices caractérisés par un circuit de vapeur, un cycle de fonctionnement ou des phases particuliers; Dispositifs de commande spécialement adaptés à ces systèmes, cycles ou phases; Utilisation de la vapeur soutirée ou de la vapeur d'évacuation pour le réchauffage de l'eau d'alimentation les machines motrices étant uniquement du type turbine
Described herein is a method of preparing a metal-organic framework (MOF) compound including a MOF metal and a MOF linker. The method includes forming a mixture including a MOF metal precursor, a MOF linker precursor, a solvent, and optionally a base. The method also includes reacting the mixture under a reaction condition selected from the group consisting of an ambient reaction pressure, a mixture temperature less than about a boiling point of the solvent, an aqueous reaction mixture, and combinations thereof. Also described herein is a MOF compound prepared according to the method.
C07C 51/41 - Préparation de sels d'acides carboxyliques par conversion de ces acides ou de leurs sels en sels ayant la même partie acide carboxylique
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
C07C 55/24 - Composés saturés comportant plusieurs groupes carboxyle liés à des atomes de carbone acycliques contenant au moins quatre groupes carboxyle
23.
SORBENTS FUNCTIONALIZED WITH LIGANDS HAVING AN AMINOSILICONE FUNCTIONAL GROUP
Described herein are sorbents functionalized with ligands having an aminosilicone functional group. Also described herein are methods of making the sorbents functionalized with ligands having an aminosilicone functional group. Also described herein are methods of using the sorbents functionalized with ligands having an aminosilicone functional group.
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
B01D 53/02 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse
B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
24.
POWER PLANT WITH EXHAUST GAS RECIRCULATION COMPRESSOR
A power plant includes a gas turbine engine, which includes a compressor and a turbine. The compressor includes a compressor outlet. The turbine discharges a first exhaust gas stream therefrom. A heat recovery steam generator extracts heat from the first exhaust gas stream and discharges a second exhaust gas stream therefrom. A cooler cools the second exhaust gas stream, thereby defining a cooled exhaust gas stream, and discharges the cooled exhaust gas stream. An exhaust gas recirculation line channels a first portion of the cooled exhaust gas stream towards the compressor. A recirculation compressor selectively pressurizes the first portion of the cooled exhaust gas stream for discharge to the compressor outlet.
F01K 23/10 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle le fluide à la sortie de l'un des cycles chauffant le fluide dans un autre cycle
F01K 3/26 - Ensembles fonctionnels caractérisés par l'emploi d'accumulateurs de vapeur ou de chaleur ou bien de réchauffeurs intermédiaires de vapeur comportant des réchauffeurs avec chauffage par la vapeur
F02C 1/00 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de gaz chauds ou de gaz sous pression non chauffés, comme fluide de travail
F02C 6/00 - Ensembles fonctionnels multiples de turbines à gaz; Combinaisons d'ensembles fonctionnels de turbines à gaz avec d'autres appareils; Adaptations d'ensembles fonctionnels de turbines à gaz à des applications particulières
F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs
25.
COMBINED CYCLE POWER PLANT WITH EXHAUST GAS RECIRCULATION EJECTOR
A combined cycle power plant includes a gas turbine engine, which includes a compressor and a turbine. The turbine discharges a first exhaust gas stream therefrom. A heat recovery steam generator receives the first exhaust gas stream, extracts heat from the first exhaust gas stream, and discharges a second exhaust gas stream therefrom. A cooler cools the second exhaust gas stream, thereby defining a cooled exhaust gas stream, and discharges the cooled exhaust gas stream. An exhaust gas recirculation line channels a first portion of the cooled exhaust gas stream towards an ejector. The ejector receives the compressor extraction flow and the first portion of the cooled exhaust gas stream, compresses the first portion of the cooled exhaust gas stream using the compressor extraction flow, and discharges a recovered gas flow to the turbine.
F01K 21/04 - Ensembles fonctionnels de machines motrices à vapeur non prévus ailleurs utilisant un mélange de vapeur et de gaz; Ensembles fonctionnels produisant ou surchauffant de la vapeur en mettant en contact direct l'eau ou la vapeur avec des gaz chauds
F01K 23/10 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle le fluide à la sortie de l'un des cycles chauffant le fluide dans un autre cycle
F02C 7/14 - Refroidissement des ensembles fonctionnels des fluides dans l'ensemble fonctionnel
26.
IMPROVEMENTS IN OR RELATING TO POWER TRANSMISSION NETWORKS
DC1DC1-33) flowing in the interconnection conduit, said first DC voltage reference so as to drive said DC current in the interconnection conduit below a predetermined threshold so that the interconnection conduit can be disconnected from the first DC terminal by a first interconnector switch (18).
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
27.
COMBINED CYCLE POWER PLANTS WITH EXHAUST GAS RECIRCULATION INTERCOOLING
A combined cycle power plant (100) includes a gas turbine engine (102) that includes a compressor (106) having a compressor inlet (168), a compressor outlet (170), and an interstage inlet (172) defined therebetween. The turbine (110) also includes a turbine outlet configured to discharge a first exhaust gas stream (112) therefrom. A heat recovery steam generator (114) is configured to receive the first exhaust gas stream (112), extract heat from the first exhaust gas stream (112), and discharge a second exhaust gas stream (120) therefrom. Either a recirculation compressor (404) pressurizes a first portion of the second exhaust gas stream (120) for recirculation towards the compressor interstage inlet (172), or an admission compressor (174) pressurizes an air stream directed towards the compressor interstage inlet (172). A first cooler (148) cools the stream directed to the compressor (106), thereby defining a cooled stream (180), wherein the first cooler (148) provides the cooled stream (180) to the interstage inlet (172) of the compressor (106).
The invention concerns a sealing system comprising two components (10, 10'), which are part of a high or medium voltage apparatus containing a gas in which each of the components (10, 10') comprises an end or assembly face (12) that faces the end or assembly face 12) of the other component (10) and wherein a compression sealing gasket (14, 14') is compressed between the end or assembly faces 12, 12') of the components (10, 10'), the compression sealing gasket (14, 14') comprising a main body (18, 38) made of an elastomer material and comprising a radially outer face (20, 30) and an radially inner face (22, 32) coaxial to each other, wherein at least one of said radially outer face (20,30) and said radially inner face (22, 32) comprises at least one first thin layer (23, 33), made of metal or soft metal or PTFE, and having a thickness of between 1 nm and 1 mm.
F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique
F16J 15/12 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique par renforcement ou couverture métallique
F16L 23/18 - Raccords à brides caractérisés par les moyens d'étanchéité les moyens d'étanchéité étant des segments
F16L 23/22 - Raccords à brides caractérisés par les moyens d'étanchéité les moyens d'étanchéité étant des segments exclusivement en un matériau autre qu'un métal
The invention concerns a sealing system comprising two components (10, 10', 100, 101) of a gas insulated portion of a high or medium voltage apparatus, in which each of the components (10') comprises an end or assembly face (12', 102) that faces the end or assembly ace (12, 101) of the other component (10), at least one of the assembly faces comprising at least one recess (16) and wherein at least one compression sealing gasket (14, 14') is at least partly arranged in the at least one recess and is compressed between the assembling faces (12, 12', 101, 102) of the components (10, 10'), the compression sealing gasket (14, 14') comprising a main body (141) of general planar extension, or extending in a plane, comprising an inner side (22, 32) and an outer side (20, 30), and end faces (24, 26, 15 34, 36), which delimit the gasket along an axis (AA') perpendicular to the plane, and connect the inner side and the outer side, made of an elastomer material, the main body having a 1st extension (L14), along the axis (AA'), at least one of the inner side and the outer side being provided with a lip (141) which has a 2nd extension (l14), along the axis (AA') perpendicular to the plane, less than the 1st extension (L14).
F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique
F16J 15/12 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique par renforcement ou couverture métallique
F16L 23/18 - Raccords à brides caractérisés par les moyens d'étanchéité les moyens d'étanchéité étant des segments
F16L 23/22 - Raccords à brides caractérisés par les moyens d'étanchéité les moyens d'étanchéité étant des segments exclusivement en un matériau autre qu'un métal
An electrical assembly (52) comprises: a voltage source converter (20) including at least one energy storage device (48); an energy storage system (54) electrically coupled to the voltage source converter (20), the energy storage system (54) controllable to release and absorb energy; and a controller (50,56) programmed to selectively trigger a control of the energy storage system (54) to release energy or absorb energy responsive to a measurement of stored energy in the voltage source converter (20).
H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
31.
COMBINED CYCLE POWER PLANTS WITH EXHAUST GAS RECIRCULATION
A combined cycle power plant (100) including a gas turbine engine (102) having a compressor inlet (106) and a turbine outlet (110) that is configured to discharge a first exhaust gas stream (120) therefrom. A heat recovery steam generator (112) is configured to receive the first exhaust gas stream (120), extract heat from the first exhaust gas stream (120) to make steam, and discharge a second exhaust gas stream (122) therefrom. A steam turbine (104) is configured to discharge a steam stream (128) therefrom, a carbon capture system (134) is configured to receive the steam stream (128), a recirculation blower (170) is configured to pressurize a portion of the second exhaust gas stream (122) for recirculation towards the compressor inlet (106), and an air inlet blower (168) is configured to pressurize an airflow stream (174) channeled towards the compressor inlet (1060, such that a pressurized mixed flow stream, formed from the portion of the second exhaust gas stream (122) and the airflow stream (174), is received at the compressor inlet (106).
F01K 23/10 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle le fluide à la sortie de l'un des cycles chauffant le fluide dans un autre cycle
F02C 3/34 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de produits de combustion comme fluide de travail avec recyclage d'une partie du fluide de travail, c. à d. cycles semi-fermés comportant des produits de combustion dans la partie fermée du cycle
32.
SYSTEM AND METHOD FOR GAS TREATMENT VIA MOVABLE ADSORPTION MODULE
A system includes a gas treatment system having an adsorption module, wherein the adsorption module includes one or more sorbent cartridges having a sorbent material. The gas treatment system further includes a linear positioning assembly configured to move the adsorption module along a linear path of travel between a first position in a first flow path and a second position in a second flow path. The gas treatment system is configured to adsorb an undesirable gas from a first fluid flow in the first flow path into the sorbent material when the adsorption module is disposed in the first position. The gas treatment system is configured to desorb the undesirable gas from the sorbent material when the adsorption module is disposed in the second position.
B01D 53/00 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols
B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
33.
DEAERATOR SYSTEMS AND METHODS OF SERVICING OF DEAERATOR
The present disclosure relates to a deaerator system comprising a feedwater supply, a heating medium supply, and a deaerator vessel. The deaerator vessel comprises an upper packing section, a lower packing section, a first space between the upper packing and the lower packing, and a second space between the upper packing and the top of the vessel, a gas outlet and a feedwater outlet. The upper packing section and the lower packing section are arranged within the deaerator vessel in fluid communication with each other, and the upper packing section is narrower than the lower packing section. The heating medium supply is arranged below the lower packing section, and the feedwater supply comprises first piping for supplying a first portion of the feedwater to the first space, and a second piping for supplying a second portion to the second space. The present disclosure further relates to methods for deaerating feedwater and to methods for servicing deaerator systems.
Systems and methods for power system switching element (PSSE) anomaly detection are disclosed. An example PSSE anomaly detection unit may include a power system switching element position estimator (PSSEPE) and a comparison unit. The PSSEPE may be configured to receive a set of measurements and a set of control commands associated with a PSSE, calculate an anomaly confidence score based on the set of measurements and the set of control commands, and estimate a calculated PSSE position based on the set of measurements and the set of control commands. The comparison unit may be configured to receive the calculated PSSE position from the PSSEPE, receive the set of measurements and the set of control commands from the PSSEPE, receive a reported PSSE position associated with the PSSE, and determine a PSSE anomaly decision based on a difference between the reported PSSE position and the calculated PSSE position.
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p.ex. charge équilibrée progressivement
H02H 3/08 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge
H02H 3/30 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant des deux portions séparées d'un même système, p.ex. à deux bouts opposés d'une ligne, à la sortie et à l'entrée d'un appareil utilisant des fils pilotes ou autre canal de signalisation
H02H 3/33 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p.ex. de courants dans des conducteurs d'aller et retour utilisant des transformateurs sommateurs de courant
H02H 3/46 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à des écarts de fréquence
35.
SYSTEM FOR READYING SUB-CRITICAL AND SUPER-CRITICAL STEAM GENERATOR, SERVICING METHOD OF SAID SUB-CRITICAL AND SUPER-CRITICAL STEAM GENERATOR AND METHOD OF OPERATION OF SUB-CRITICAL AND SUPER-CRITICAL STEAM GENERATOR
A system for readying sub-critical (48, 182, 186) and super-critical steam generator (190), a servicing method of said sub-critical and a super-critical steam generator and a method of operation of sub-critical and super-critical steam generator is provided. The steam generator (48, 182, 186, 190) includes a first auxiliary heating device (55a) disposed on at least one water-steam separator (18, 192) for heating said at least one water-steam separator, and / or a second auxiliary heating device (55b) disposed at least on a part of furnace top-end piping (26) for heating the furnace top-end piping. Said auxiliary heating devices are heating steam producing components of the steam generator (48, 182, 186, 190) and thus allowing to keep them above the temperature in which materials creating said steam producing components are brittle. The method includes recirculation of the water through the steam generator (48, 182, 186, 190).
F22B 35/04 - Systèmes de commande pour chaudières à vapeur pour chaudières à vapeur à circulation par convection pendant la période de démarrage, c. à d. pendant la période située entre l'allumage du foyer et l'obtention de la température normale de fonctionnement de la chaudière à vapeur
F22B 7/00 - Chaudières à vapeur du type à tubes foyers, c. à d. où la combustion se produit à l'intérieur d'un ou plusieurs tubes foyers faisant partie intégrante du corps de la chaudière
36.
A STEAM TURBINE AND A USE OF THE STEAM TURBINE, A METHOD OF MANUFACTURING OR SERVICING OF SAID STEAM TURBINE, A SMALL-MODULAR REACTOR AND A POWER PLANT INCLUDING SAID STEAM TURBINE
A steam turbine including at least one steam turbine section, wherein said at least one steam turbine section comprises at least two blade stages. Said blade stages include a row of fixed blades and an accompanying row of moving blades that is downstream of the row of fixed blades. Said blade stages include a single nucleating blade stage, and at least one downstream blade stage. Said at least one downstream blade stage is located downstream of said nucleating blade stage. Said nucleating blade stage is including the Wilson point. The stage loading of the nucleating blade stage is from 1.3 to 2.3. The stage loading of said at least one downstream blade stage is lower than the loading of the nucleating blade stage.
F01D 1/16 - "Machines" ou machines motrices à déplacement non positif, p.ex. turbines à vapeur avec des moyens stationnaires de guidage de fluide de travail et un rotor à ailettes ou de structure analogue caractérisées par la présence à la fois d'étages à réaction et d'étages à action
A pulverized solid fuel nozzle tip assembly (36) with a low contact frame for use with a pulverized solid fuel pipe nozzle (38) is described. The pulverized solid fuel nozzle tip assembly (36) has an outer nozzle tip portion (46) adapted to mount in supported relation with the pulverized solid fuel pipe nozzle (38), and an inner nozzle tip portion (48) adapted for mounting within the outer nozzle tip portion (46) to have secure tiltable movement. The outer nozzle tip portion (46) has supporting surfaces that support surfaces of the inner nozzle tip portion to minimize the tilting forces transmitted to the inner nozzle tip portion during normal furnace operation, enhancing the wear resistance of the pulverized solid fuel nozzle tip assembly (36). The supporting surfaces of the outer nozzle also eliminate stress cracking to the surfaces of the inner nozzle tip portion that can arise due to thermal growth.
Soluble water scavenger molecules for use with dielectric fluids are disclosed. An example dielectric fluid-based composition for reducing water content in a dielectric fluid may include a water-scavenging agent disposed within a dielectric fluid. The example dielectric fluid-based composition may further include the water-scavenging agent being soluble in the dielectric fluid. The example dielectric fluid-based composition may further include the water-scavenging agent being configured to react with water molecules in the dielectric fluid. The example dielectric fluid-based composition may be disposed in an electrical equipment immersed in oil. The electrical equipment may further include at least one solid insulation in operational contact with the dielectric fluid.
C09K 15/20 - Compositions anti-oxydantes; Compositions inhibant les modifications chimiques contenant des composés organiques contenant de l'azote et de l'oxygène
C10M 101/00 - Compositions lubrifiantes, caractérisées en ce que le matériau de base est une huile minérale ou une huile grasse
H01B 3/18 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques
H01G 4/22 - Diélectriques utilisant des combinaisons de diélectriques d'au moins deux des groupes imprégné
H02N 1/00 - Générateurs ou moteurs électrostatiques utilisant un porteur mobile de charge électrostatique qui est solide
39.
SYSTEM AND METHOD FOR WARMKEEPING SUB-CRITICAL STEAM GENERATOR
A system (46,92) and method (68) for warmkeeping a steam generator (10) such as a sub-critical steam generator (10) is disclosed. Water extraction piping (50) extracts water from a component of one of the water fill circuits of the sub-critical steam generator (10). A deaerator heating system (30) having an inventory tank (32) of water mixes the extracted water with the water in the tank (32), and heats the mix of water to a predetermined temperature level to generate heated deaerated feedwater. Feedwater piping (40) forwards the heated deaerated feedwater at the predetermined temperature level from the deaerator heating system (30) to the water fill circuits of the sub-critical steam generator (10). The water extraction piping (50), the deaerator heating system (30) and the feedwater piping (40) operate cooperatively to warmkeep the water fill circuits in accordance with the predetermined temperature level while the sub-critical steam generator (10) is in the unfired stand-by mode of operation.
F22D 1/28 - Appareils de chauffage d'eau d'alimentation, p.ex. préchauffeurs avec transfert direct de la chaleur, p.ex. par mélange d'eau et de vapeur
F22D 1/50 - Appareils de chauffage d'eau d'alimentation, p.ex. préchauffeurs comprenant un dégazage thermique de l'eau d'alimentation
F22B 37/34 - Adaptation des chaudières pour améliorer la circulation de l'eau
F22D 1/32 - Appareils de chauffage d'eau d'alimentation, p.ex. préchauffeurs disposés pour un chauffage par la vapeur, p.ex. prélevée dans la turbine
40.
AN ELECTRIC GENERATOR PHASE RING HANDLING TOOL, A SYSTEM FOR SERVICING OR INSTALLING ONE OR MORE PHASE RINGS IN AN ELECTRIC GENERATOR COMPRISING SAID HANDLING TOOL AND A METHOD FOR SERVICING OR INSTALLING ONE OR MORE PHASE RINGS IN AN ELECTRIC GENERATOR WITH SAID SYSTEM
An electric generator phase ring handling tool (24), a phase ring loading tool (26), base loader (28), and a system and a method for servicing or installing one or more phase rings (20) in an electric generator (12) using the handling tool, the loading tool and the base loader (28). Phase rings (20) can be picked up and transported to a generator (12), inserted into the generator (12), adjusted while inside the generator (12), and removed. Installation, removal and servicing of the rings in a generator (12) avoids use of a crane and allows shorten generator (12) outage duration. Without using a crane for installation, removal and servicing, the safety of workers performing these operations is enhanced. Also, increased precision in transporting, placing, installing, removing, and adjusting the rings is obtained, minimizing the risk of damage to the rings and the generator (12).
A pulverized solid fuel nozzle tip assembly (36) for use with a pulverized solid fuel pipe nozzle (38) to issue a stream of pulverized solid fuel and air (35) to a pulverized solid fuel-fired boiler (10) is described. The pulverized solid fuel nozzle tip assembly (36) has an outer nozzle tip portion (46) adapted to mount in supported relation with the pulverized solid fuel pipe nozzle (38), and a monolithic, ceramic, inner nozzle tip portion (48) adapted for mounting within the outer nozzle tip portion (46) to have secure tiltable movement. The outer nozzle (46) has supporting surfaces that support surfaces of the inner nozzle tip portion (48) to minimize the tilting forces transmitted to the inner nozzle tip portion (48) during normal furnace operation, enhancing the wear resistance of the pulverized solid fuel nozzle tip assembly (36). The outer nozzle (46) has an air shroud (56) with multiple air passages (72,74) to direct secondary air (63) over an outer surface of the inner nozzle tip portion (48).
There is provided an assembly (20,120,220) for use in electrical power transmission. The assembly (20,120,220) comprises: a building (24) for housing an electrical power transmission component; a charging circuit (26); a grounding circuit (28) for electrical connection to ground; and at least one transformer (30) located outside the building (24), the or each transformer (30) including mutually coupled first and second transformer windings, the or each first transformer winding for electrical connection to an AC network, the or each second transformer winding for electrical connection to the electrical power transmission component, the or each transformer (30) further including phase and neutral bushings electrically connected to respective terminals of the corresponding second transformer winding, the or each phase bushing extending into the building (24) for electrical connection to the electrical power transmission component, the charging circuit (26) electrically interconnecting the or each neutral bushing and the grounding circuit (28).
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
There is provided an electrical assembly (20) comprising: a voltage sourced converter (22) for connection to an AC network (30); a controller (40) programmed so that, responsive to detection of a fault in the AC network (30), the controller (40): obtains a first set of voltage and current measurements taken at an interface connection point (PCC) between the voltage sourced converter (22) and the AC network (30); after obtaining the first set of voltage and current measurements, change operation of the voltage sourced converter to inject a modified fault current, and then obtain a second set of voltage and current measurements taken at the interface connection point (PCC); using the first and second sets of voltage and current measurements, determine operating parameters of the voltage sourced converter (22) for injecting a target fault current having a target phase angle that is the same, or substantially the same, as a phase angle of a reference fault current that would have resulted from operation of the voltage sourced converter (22) in accordance with pre-fault steady-state voltage phase and magnitude values; and operate the voltage sourced converter (22) in accordance with the determined operating parameters so as to inject the target fault current at the target phase angle.
H02J 3/12 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau
44.
A CLASSIFIER AND A PULVERIZER COMPRISING THE CLASSIFIER AND A METHOD OF OPERATING THE PULVERIZER AND A USE OF THE CLASSIFIER
A classifier (32) comprising deflector ring (48) having an interior sidewall liner (64) circumferentially affixed to an interior sidewall (66) of deflector ring (48) and an exterior sidewall liner (68) circumferentially affixed to an exterior sidewall (70) of deflector ring (48), outlet housing (50) comprises a frusto-conical shaped body, a base region (78) formed on a top surface (80) of deflector ring (48), outlet housing opposing sidewalls (82), each extending outward at an angle away from an edge (84) of top surface (80) of deflector ring (48), and a top region (86) parallel to base region (78) that joins with each of opposing angled sidewalls (82) extending outward from edge (84) of top surface (80) of deflector ring (48), top region (86) having an upper surface (88) extending thereover with one or more openings (90) formed therein corresponding to one or more outlet channels (34), wherein outlet housing (50) further comprises an interior sidewall liner (72) affixed to an interior surface (74) of each of opposing angled sidewalls (82), each interior sidewall liner (72) extending from a corresponding edge (84) of top surface (80) of deflector ring (48) to a respective portion of top region (86), and an upper wall liner (76) affixed to an inner wall (92) of upper surface (88) of top region (86), upper wall liner (76) extending along all of inner wall (92) of upper surface (88) of top region (86) formed between one or more openings (90).
B07B 7/083 - Séparation sélective des matériaux solides portés par des courants de gaz, ou dispersés dans ceux-ci utilisant la force centrifuge produite par la rotation d'ailettes, de disques, de tambours ou de brosses
B07B 7/08 - Séparation sélective des matériaux solides portés par des courants de gaz, ou dispersés dans ceux-ci utilisant la force centrifuge
45.
INSULATING NOZZLE FOR CIRCUIT BREAKER WITH IMPROVED INNER CONFIGURATION
An electric arc-blast nozzle (100) for circuit breaker comprising a median part (100b) internally defining an axial passage (130) for a male arc contact, the axial passage having, in the direction of flow of a blowing gas which exits from the nozzle a first region (131) and a second region (132) narrowed relative to the first region (131).
H01H 33/70 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc
H01H 33/76 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc dans lesquels un gaz extincteur d'arc est dégagé par des organes fixes; Emploi de matériaux spécifiés dans ce but
An electrical assembly comprises a grounding mechanism (54) and an electrical device (52), the grounding mechanism (54) including a support longitudinal member (56) and a switch contact member (58), the switch contact member (58) arranged in or on the support longitudinal member (56), the switch contact member (58) configured to be connected in use to ground, the electrical device (52) including an electrical terminal, wherein the support longitudinal member (56) is configured to be slidable between: a first position in which the switch contact member (58) is separated from the electrical terminal so that the switch contact member (58) is electrically disconnected from the electrical device (52); and a second position in which the switch contact member (58) is in contact with the electrical terminal so that the switch contact member (58) is electrically connected to the electrical device (52).
H01H 31/00 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs
H01H 1/44 - Contacts caractérisés par la manière dont les contacts coopérants s'engagent par glissement à montage élastique
H01H 3/24 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moyen d'actionnement pneumatique ou hydraulique
H01H 3/26 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur dynamo-électrique
H01H 9/16 - Indicateurs de position, p.ex. "marche" ou "arrêt"
H01H 15/06 - Organes mobiles; Contacts montés sur ces organes
H01H 31/08 - Mécanismes d'interverrouillage pour interverrouiller plusieurs organes du mécanisme actionnant les contacts
H01H 31/10 - Mécanismes d'interverrouillage pour interverrouiller plusieurs interrupteurs
H02B 5/01 - Dispositions pour la mise à la terre, p.ex. perches de mise à la terre
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
47.
IMPROVED COMPRESSION SEALING GASKET AND SEALING SYSTEM
The invention concerns a compression sealing gasket (14) comprising an annular main body (18) made of an elastomer material and having a main axis A, the main body (18) comprising an annular radially outer face (20) and an annular radially inner face (22) parallel and coaxial to each other, wherein the gasket comprises an insert (28) mounted on the inner face (22). The invention also concerns a sealing system comprising the sealing gasket (14).
F16J 15/12 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique par renforcement ou couverture métallique
F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique
F16J 15/02 - Joints d'étanchéité entre surfaces immobiles entre elles
F16L 23/18 - Raccords à brides caractérisés par les moyens d'étanchéité les moyens d'étanchéité étant des segments
F16L 23/22 - Raccords à brides caractérisés par les moyens d'étanchéité les moyens d'étanchéité étant des segments exclusivement en un matériau autre qu'un métal
48.
IMPROVEMENTS IN OR RELATING TO POWER TRANSMISSION NETWORKS
In the field of high voltage direct current (HVDC) power transmission networks, there is a need for improved network interconnections. A network interconnection (10; 70; 80), for interconnecting a power supply network (12) with a plurality of power distribution networks, comprises a power converter station (26) that is connected in use adjacent to an end (28) of a power supply network (12) and is controllable to provide an alternating voltage source. The network interconnection (10; 70; 80) also includes an interconnection bus (36; 88) which extends from the power converter station (26) towards each of a primary point of interconnection (38) that is connected, in use, with a primary power distribution network and at least one secondary point of interconnection (40A; 40B, 40N) which is connected, in use, with a corresponding secondary power distribution network. The network interconnection (10; 70; 80) additionally includes a power regulator (46A; 46B, 46N) that is electrically connected between the interconnection bus (36; 88) and the or each secondary point of interconnection (40A; 40B, 40N), and is operable to control the flow of power from the interconnection bus (36; 88) to the corresponding secondary point of interconnection (40A; 40B, 40N). The network interconnection (10; 70; 80) further includes a power flow controller (58) that is arranged in operative communication with the power converter station (26) and the or each power regulator (46A; 46B, 46N), and is programmed to adjust the alternating voltage source provided by the power converter station (26) to control the power delivered to the primary point of interconnection (38) and to alter as needed the influence of the or each power regulator (46A; 46B, 46N) to control the power delivered to the or each corresponding secondary point of interconnection (40A; 40B, 40N).
H02J 3/06 - Commande du transfert de puissance entre réseaux connectés; Commande du partage de charge entre réseaux connectés
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
49.
IMPROVEMENTS IN OR RELATING TO PROTECTION CIRCUITS
In the field of High Voltage Direct Current (HVDC) power transmission networks, there is a need for an improved protection circuit to protecting a whole or part of such a network. A protection circuit (10; 100), for protecting a whole or part of a HVDC power transmission network (12; 102), comprises a plurality of sets (24, 30; 108, 114, 120) of sensors (26i, 26a, 263, 264; 26s, 286, 267, 26»), each of which set (24, 30; 108, 114, 120) defines a respective protection zone (28, 32; 110, 116, 122). The protection circuit (10; 100) also includes a controller (34) that is programmed to evaluate sensor information received from the sensors (26i, 26a, 263, 264; 26s, 266, 267, 268) to determine whether a fault has occurred within a protection zone (28, 32; 110, 116, 122). The controller (34) is further programmed, in the event of a sensor (26i, 26a, 26a, 264; 26s, 26e, 267, 26e) in a protection zone (28, 32; 110, 116, 122) failing, to dynamically reconfigure the affected protection zone by including a sensor (26i, 26a, 263/ 264; 26s, 26e, 267, 268) from another protection zone (28, 32; 110, 116, 122).
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec des moyens pour accroître la fiabilité, p.ex. dispositifs redondants
H02H 3/33 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p.ex. de courants dans des conducteurs d'aller et retour utilisant des transformateurs sommateurs de courant
An electrical assembly (20) comprises: a converter-based electrical device (22); and a transformer (24) for connecting the converter-based electrical device (22) to an AC electrical network (42), a first transformer side (44) of the transformer (24) connected to the converter-based electrical device (22), a second transformer side (46) of the transformer (24) for connection to the AC electrical network (42), the transformer (24) including a plurality of taps, the transformer (24) including a tap changer operable to selectively connect to the or each tap to modify a turn ratio of the transformer (24), wherein the transformer (24) includes a controller (54b) configured to selectively operate the tap changer in an AC voltage modification mode, responsive to an abnormal operating state of the electrical assembly (20), to modify the turn ratio of the transformer (24) so as to modify an AC voltage at the first transformer side (44).
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
H01F 27/42 - Circuits spécialement adaptés à la modification ou la compensation des caractéristiques électriques des transformateurs, réactances ou bobines d'arrêt
51.
CIRCUIT BREAKER COMPRISING AN IMPROVED LINKAGE MECHANISM
The invention concerns a circuit breaker (10) comprising a movable contact (14) a driving rod (16) slidably mounted in the circuit breaker (10), a linkage mechanism (18) for driving the movable contact (14), a pivoted driving fork (24) rotatably mounted in the circuit breaker (10) which cooperates with the driving rod (16) through the cooperation of a primary pin (28) provided on the driving rod (16) and a primary slot (30) provided on the driving fork (24), a driven lever (26) connecting the driving fork (24) to the movable contact (14), wherein the driving rod (16) supports a secondary pin (32) which cooperates with a secondary slot (34) of the driving fork (24) when the driving rod (16) in a position between a predetermined position and an extreme opened position of the circuit breaker (10).
The invention concerns a high-voltage circuit breaker (10) filled with insulating gas having a main axis A, comprising arcing contacts (12, 16) and an insulating nozzle (22); wherein an insulating gas flowing from a storage chamber and heated by an electric arc (26 between the two arcing contacts (12, 16) is partitioned into a first gas flow (32) and a second gas flow (34) conducted outside of the insulating nozzle (22) from opposite directions toward a main gas chamber (42), wherein the first gas flow (32) flows through a first intermediary gas chamber (36) and the second gas flow (34) flows through a second intermediary gas chamber (50) and is partitioned in a first portion (56) directed to the main gas chamber (42) and a second portion (60) directed to an exhaust gas chamber (62), characterized in that the first portion (56) of the second gas flow (34) is smaller than the second portion (60) of the second gas flow (34).
H01H 33/74 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc comportant des organes fixes pour diriger l'écoulement du fluide extincteur d'arc, p.ex. chambre d'arc dans lesquels la coupure s'opère dans un gaz
53.
ACTUATING MECHANISM FOR OPERATING A CIRCUIT BREAKER
An actuating mechanism (30) for a circuit breaker (7) comprises a first piston (11) movable in a first cylinder (14), against the force of a first compressible member (15), by admitting hydraulic fluid, and a second piston (21) movable in a second cylinder (24), against the force of a second compressible member (25), by admitting hydraulic fluid. Hydraulic fluid can transferred from the second cylinder (24) into the first cylinder (14) via an interconnecting fluid passage (35), and released from the first cylinder (14) via an outlet fluid passage (37). The first piston (11) is arranged to be connected to a circuit breaker (7) in a switchgear (5) so as to open and close it. Importantly, the first piston (11) is directly mechanically connected to the first compressible member (15), ensuring that all the energy stored in the compressible member (15) is available to open the circuit breaker (7).
H01H 33/34 - Dispositions à énergie incorporée dans l'interrupteur pour actionner le mécanisme moteur utilisant un mécanisme de commande à fluide hydraulique
H01H 33/40 - Dispositions à énergie incorporée dans l'interrupteur pour actionner le mécanisme moteur utilisant un moteur à ressort
54.
PHASE SHIFTING TRANSFORMERS COMPRISING A SINGLE COIL FOR TWO EXCITING WINDINGS FOR VOLTAGE REGULATION AND FOR PHASE SHIFT ANGLE REGULATION
The invention relates to a phase shifting transformer (2) comprising: - 2 exciting windings (X1, X2, X3, Z1, Z2, Z3) sharing the same 3 double taped coils (4, 6, 8), - a first excited winding comprising 3 connected coils (41p, 42p, 43p), for a phase shift regulation, - a second excited winding comprising 3 connected coils (41v, 42v, 43v), for a voltage regulation; each of said 2 exciting windings regulating the voltage of one coil of said second excited winding (41p, 42 p, 43p), and regulating the voltage level of one coil of said first excited winding (41v, 42v, 43v).
H02M 5/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des transformateurs pour la transformation de l'amplitude de la tension ou du courant seulement
55.
IMPROVEMENTS IN OR RELATING TO BIPOLE POWER TRANSMISSION SCHEMES
In the field of high voltage direct current (HVDC) power transmission schemes, there is a need for improved detection of ground faults. A bipole power transmission scheme (12; 112) typically includes a first converter station (14) that is positioned remote from a second converter station (16), along with first and second transmission conduits (18, 20) which interconnect the first and second converter stations (14, 16) to permit the transmission of power between the first and second converter stations (14, 16). The first converter station (14) usually has first and second power converters (22, 24), with the first power converter (22) including a first DC terminal (26) that is connected with the first transmission conduit (18), at least one AC terminal (28) which is connected with a first AC network (30), and a second DC terminal (32) that is interconnected with a third DC terminal (34) of the second power converter (24) by a first interconnection (36) which defines a first neutral area (38). The second power converter (24) usually additionally includes a fourth DC terminal (40) that is connected with the second transmission conduit (20) and at least one AC terminal (42) which is connected with a second AC network (44). The first converter station (14) may additionally include a first grounding circuit (70) that is connected in use between the first neutral area (38) and ground (72) and is switchable into and out of operation, as well as at least one of a first current sensor (78), that is configured in use to measure the flow of current between the first neutral area (38) and ground (72), and a first voltage measurer (80), which is configured in use to measure the voltage difference between the first neutral area (38) and ground (72). Usually the second converter station (16) has third and fourth power converters (46, 48), with the third power converter (46) including a fifth DC terminal (50) that is connected with the first transmission conduit (18), at least one AC terminal (52) which is connected with a third AC network (54), and a sixth DC terminal (56) that is interconnected with a seventh DC terminal (58) of the fourth power converter (48) by a second interconnection (60) which defines a second neutral area (62). The fourth power converter (48) typically additionally includes an eighth DC terminal (64) that is connected with the second transmission conduit (20) and at least one AC terminal (66) which is connected with a fourth AC network (68). The second converter station (16) may additionally include a second grounding circuit (84) that is connected in use between the second neutral area (62) and ground (72), and is switchable into and out of operation, as well as at least one of a second current sensor (90), that is configured in use to measure the flow of current between the second neutral area (62) and ground (72), and a second voltage measurer (92), which is configured in use to measure the voltage difference between the second neutral area (62) and ground (72). The fault detector (10; 100; 110; 130) comprises a fault detector controller (96; 104; 122; 132) which is arranged in use in operative communication with the first and second grounding circuits (70, 84) and at least the first and second current sensors (78, 90) or the first and second voltage measurers (80, 92), and is programmed to detect a ground fault (150) in one or other of the first and second neutral areas (38, 62) by: configuring the first grounding circuit (70) to be in operation and the second grounding circuit (84) to be out of operation; checking for at least one of a first erroneous current flow in the first neutral area (38) using the first current sensor (78) and a first erroneous voltage in the second neutral area (62) using the second voltage measurer (92); recognising a ground fault (150) in the second neutral area (62) if a first erroneous current flow is identified or if a first erroneous voltage is identified; configuring the first grounding circuit (70) to be out of operation and the second grounding circuit (84) to be in operation; checking for at least one of a second erroneous current flow in the second neutral area (62) using the second current sensor (90) and a second erroneous voltage in the first neutral area (38) using the first voltage measurer (80); and recognising a ground fault (150) in the first neutral area (38) if a second erroneous current flow is identified or if a second erroneous voltage is identified.
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02H 3/16 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un courant de défaut à la terre ou à la masse
A converter station (10), for a bipole power transmission scheme, comprises a first voltage source converter (12) and a second source converter (32). Each converters have a first terminal (14,16) as transmission conduit and a second terminal (36,34) as a return conduit. The second terminal (16) of the return conduit of the first converter is electrically connected to the first terminal (36) of the transmission conduit of the second converter as being a same terminal. Both voltage source converters (12,32) also includes at least one converter limb (18A, 18B, 18C) which extends between the first and second terminals of each converters. The or each converter limb includes first and second limb portions that are separated by a corresponding first and second AC terminal which is for connection to a respective phase (A, B, C) of a first or second AC network.
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 7/757 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
The invention concerns a transformer assembly which comprises: - a step-up transformer (20); - a step-down transformer (30); - a phase shifting transformer (40) having a source side and a load side connected, respectively, to the step-down transformer and the step-up transformer.
A system and method of controlling corrosion of a heat exchanger, having a hot gas inlet and outlet and a cold side inlet and outlet. The method includes determining a temperature of the heat exchanger at a first selected location, controlling a temperature of a corrosion sensing device to a first selected temperature based on the temperature of the surface of the heat exchanger and determining a corrosion rate associated with the heat exchanger surface at the first selected location for the first selected temperature. The method also includes comparing the corrosion rate to an expected corrosion rate, determining a cold side fluid inlet temperature target for the heat exchanger based at least in part on the comparing, the determined corrosion; and controlling a cold side fluid inlet temperature based at least in part on the determined inlet temperature target, determined corrosion rate, and expected corrosion rate.
The present invention concerns a medium- or high-voltage equipment including a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, the gas mixture comprising heptafluoroisobutyronitrile, carbon dioxide and a high content of oxygen.
H01B 3/56 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques gaz
H01H 33/22 - Emploi particulier de fluides pour extinction d'arcs
H02B 13/035 - Appareillages de commutation à isolation gazeuse
60.
IMPROVEMENTS IN OR RELATING TO CHAIN-LINK CONVERTERS
In the field of chain-link converters operable to provide a stepped variable voltage source, there is a need for an improved chain-link converter. A chain-link converter (10) comprises a plurality of series-connected chain-link modules (12). Each chain-link module (12) has a module controller (14) that is programmed to control operation of the corresponding chain-link module (12) to selectively provide a voltage source, whereby the chain-link converter (10) is able to provide a stepped variable voltage source. The chain-link converter (10) also includes a chain-link converter controller (26) that is arranged in communication with each module controller (14), and which is programmed to, in-use, communicate to a plurality of the module controllers (14) a measured converter current (IDC) that is flowing through the chain-link converter (10). The module controllers (14) that receive the measured converter current (IDC) is each further programmed, in-use, to combine the measured converter current (IDC) with a measured rate of change of current (IAC) flowing through the corresponding chain-link module (14), to establish an instantaneous module current (L) that is flowing through the said corresponding chain- link module (12).
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
61.
IMPROVEMENTS IN OR RELATING TO VOLTAGE SOURCE CONVERTERS
In the field of voltage source converters, for power conversion between alternating current (AC) and direct current (DC) in high voltage direct current (HVDC) power transmission networks, there is a need for an improved voltage source converter. A voltage source converter (10) comprises first and second DC terminals (12, 14), which are for connection to a DC network, and which have at least one converter limb (16A, 16B, 16C) extending therebetween. The or each converter limb (16A, 16B, 16C) includes first and second limb portions (18A, 18B, 18C, 20A, 20B, 20C) that are separated by a corresponding AC terminal (22A, 22B, 22C), which are for connection to a respective phase (A, B, C) of an AC network. Each limb portion (18A, 18B, 18C, 20A, 20B, 20C) includes a chain-link converter (24) that extends between the associated AC terminal (22A, 22B, 22C) and a corresponding one of the first or the second DC terminal (12, 14). Each chain-link converter (24) also includes a chain-link converter controller (26) which is programmed to control a plurality of series connected chain-link modules (28), each of which has a plurality of switching elements that are connected in parallel with an energy storage device, and whereby each chain-link converter (24) is controllable to provide a stepped variable voltage source. The voltage source converter (10) additionally includes a voltage source converter controller (30) which is arranged in operative communication with each chain-link converter controller (26) to coordinate operation of the chain-link converters (24). At least one chain-link converter controller (26) is programmed to establish at a first time instant a total voltage sum of all energies stored by the energy storage devices in each chain-link converter (24) within the voltage source converter (10), and to send the established total voltage sum to the voltage source converter controller (30). The voltage source converter controller (30) is programmed to establish a modulation index demand for each chain-link converter (24). Each said modulation index demand corresponds to a chain-link converter voltage reference, that the corresponding chain-link converter (24) is required to produce, divided by the received total voltage sum. In addition, the voltage source converter controller (30) is further programmed to send the established modulation index demand to each corresponding chain-link converter controller (26). In turn, each chain-link converter controller (26) is further programmed to reconstruct from the received modulation index demand the chain-link converter voltage reference, which the chain-link converter (24) it is controlling is required to produce, by multiplying the received modulation index demand by the total voltage sum established at the first time instant.
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
62.
BIPOLE HVDC POWER TRANSMISSION SYSTEM CONFIGURABLE TO MONOPOLE OPERATION
In the field of high voltage direct current (HVDC) power transmission schemes, i.e. power transmission apparatuses, within HVDC power transmission networks, there is a need for an improved bipole power transmission scheme, i.e. an improved bipole power transmission apparatus. A bipole power transmission scheme (10) comprises a first converter station (12) positioned in-use remote from a second converter station (14), and first and second transmission conduits (20, 22) to in-use interconnect the first converter station (12) with the second converter station (14) and thereby permit the first converter station (12) to transmit power to the second converter station (14). The first converter station (12) includes a first power converter (30) which electrically interconnects the first transmission conduit (20) with a first variable power source (32), and in-use transfers power from the first power source (32) into the first transmission conduit (20). The first converter station (12) also includes a second power converter (38) which electrically interconnects the second transmission conduit (22) with a second variable power source (40), and in-use transfers power from the second power source (40) into the second transmission conduit (22). The bipole power transmission scheme (10) further includes a converter station controller (46) which is programmed to selectively transition the bipole power transmission scheme (10) into an asymmetrical monopole configuration, while maintaining the transfer of power from both the first and second power sources (32, 40), by: electrically interconnecting the first and second power sources (32, 40); configuring one power converter (30, 38) connected to the transmission conduit (20, 22) intended to continue transmitting power in the monopole configuration as a master converter (70) operating in a grid-forming mode (62, 74); configuring the other power converter (30, 38) connected to the transmission conduit (20, 22) intended to cease transmitting power in the monopole configuration as a slave converter (72) operating in a grid-following mode (80); and controlling the slave converter (72) to reduce to zero the power being fed into the transmission conduit (20, 22) connected therewith.
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
63.
IMPROVEMENTS IN OR RELATING TO CHAIN-LINK CONVERTERS
In the field of chain-link converters operable to provide a stepped variable voltage source, there is a need for an improved method of operating such a chain-link converter. A method (10) of operating a chain-link converter, the chain-link converter including a plurality of series connected chain-link modules (12), each chain-link module including at least one switching element and an energy storage device which together are selectively operable to provide a voltage source whereby the chain-link converter is able to provide a stepped variable voltage source, comprises the steps of: (i) identifying (14) one or more unhealthy chain-link modules having a reduced performance characteristic compared to one or more healthy chain-link modules having a normal performance characteristic; (ii) utilising (16) the healthy chain-link modules normally in the operation of the chain-link converter; and (iii) reducing (18) the utilisation of the or each unhealthy chain-link module.
A bipole power transmission scheme (10) comprises a first converter station (12) that is positioned in-use remote from a second converter station (14). The first converter station (12) includes a first power converter (30) that is electrically connected with a first variable power source (38). The first power converter (30) further has a first converter controller (44) which is programmed to control the transfer of a first power infeed (46) from the first power source (38) into a first transmission conduit (20) in the form of a first power feed (76). In addition, the first converter station (12) also includes a second power converter (48) that is electrically connected with a second variable power source (50). The second power converter (48) further has a second converter controller (54) which is programmed to control the transfer of a second power infeed (56) from the second power source (50) into a second transmission conduit (22) in the form of a second power feed (86). The first power converter (30) and associated first power source (38) operate independently of the second power converter (48) and associated second power source (50) during operation of the bipole power transmission scheme (10) under normal conditions whereby the first power infeed (46) into the first transmission conduit (20) and the second power infeed (56) into the second transmission conduit (22) are independent of one another. During operation of the bipole power transmission scheme (10) under abnormal conditions, when a return conduit (24) is faulty and unable to provide a return current path, each converter controller (44, 54) is programmed to monitor the first power feed (76) in the first transmission conduit (20) and the second power feed (86) in the second transmission conduit (22) and, if the first power feed (76) in the first transmission conduit (20) and the second power feed (86) in the second transmission conduit (22) differ from one another, at least one converter controller (44, 54) modifies the power infeed (46, 56) from its corresponding power source (38, 50) to reduce the difference between the first power feed (76) and the second power feed (86).
The disclosure generally relates to a failure indicator for providing an indicator that a failure has occurred on a capacitor unit of a capacitor bank. In some embodiments, the failure indicator may include a magnetic element, and the failure indicator may be configured to move from a first orientation to a second orientation based on a mechanical or electromagnetic impulse in the capacitor unit resulting from a failure of the first capacitor unit. In some embodiments, the magnetic element may maintain the first failure indicator in the second orientation to indicate the failure of the first capacitor unit.
G01R 31/01 - Passage successif d'articles similaires aux tests, p.ex. tests "tout ou rien" d'une production de série; Test d'objets en certains points lorsqu'ils passent à travers un poste de test
H02H 7/16 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour capacités
66.
FAULT LOCALIZATION SYSTEM AND ASSOCIATED FAULT LOCALIZATION METHOD
The invention concerns a fault localization system (2) comprising: - at least one transceiver (12) meant to be arranged within a gas-insulated switchgear (4) and configured to output a detection signal corresponding to a received electromagnetic wave, to radiate, at an emission time, a probe electromagnetic wave based on a probe signal, and to output a response signal associated to a response electromagnetic wave corresponding to a response of the environment of the transceiver (12) to the probe electromagnetic wave, and received at a reception time; and - a controller (14) configured to compute a time reversed signal based on the detection signal, to generate the probe signal based on the time reversed signal, to input the probe signal to the transceiver (12), and to determine information relating to the location of a fault (3) based on a time difference between the emission time and the reception time.
An electrical assembly comprises a plurality of modules (44), each module (44) including at least one module switching element (46) and at least one energy storage device (48), the or each module switching element (46) and the or each energy storage device (48) in each module (44) arranged to be combinable to selectively provide a voltage source, each module (44) including a discharge circuit, each discharge circuit including a discharge switching element (50) and a discharge resistor (52), each discharge switching element (50) switchable to switch the corresponding discharge resistor (52) into and out of the corresponding module (44), wherein the electrical assembly includes a controller (54) configured to selectively control the discharge switching elements (50) to modulate the switching of each discharge resistor (52) into and out of the corresponding module (44) in a voltage balancing mode when the modules (44) are in a blocked state so that each module (44) emulates a resistive load profile to balance a distribution of voltages between the plurality of modules (44), wherein the resistive load profile includes at least one positive resistive slope.
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
A circuit interruption device (20) comprises: first and second terminals (22, 24) for connection, in use, to a respective electrical circuit or network (34); a current-conductive branch including first, second and third current-conductive branch portions successively connected in series between the first and second terminals (22, 24), the first current-conductive branch portion including a first switching element (36), the second current-conductive branch portion including a second switching element (38), the third current-conductive branch portion including a third switching element (40), each switching element (36,38,40) configured to be switchable to selectively permit and block a flow of current (46) in the respective current-conductive branch portion; first and second current bypass paths (28,30), the first current bypass path (28) connected across the first and second current-conductive branch portions, the second current bypass path (30) connected across the second and third current-conductive branch portions; and a controller (32) configured to selectively control the switching of the switching elements (36, 38, 40) to control a flow of current (46) between the first and second terminals (22, 24) so that: (i) in a first mode of operation of the circuit interruption device (20,120, 220), the current (46) is permitted to flow through the first, second and third current- conductive branch portions and is blocked from flowing through the current bypass paths (28, 30); and (ii) in a second mode of operation of the circuit interruption device (20,120, 220), the current (46) is blocked from flowing through the first and third current-conductive branch portions and is permitted to flow through the current bypass paths (28, 30) so as to reverse a direction of current (46) flowing through the second current-conductive branch portion.
H02H 3/08 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
H02H 3/02 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails
H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec des moyens pour accroître la fiabilité, p.ex. dispositifs redondants
There is provided an electrical assembly comprising: a converter (20) including a DC side and an AC side, the DC side configured for connection to a DC network (36), the AC side configured for connection to an AC network (40), the converter (20) including at least one switching element (46); a circuit interruption device (50) operably connected to the AC side of the converter (20); a DC voltage modification device operably connected to the DC side of the converter (20), the DC voltage modification device including a DC chopper; and a controller (56) configured to selectively control the or each switching element (46), the circuit interruption device (50) and the DC voltage modification device, wherein the controller (56) is configured to be responsive to a converter internal fault (22) by carrying out a fault operating mode in which the controller (56) controls: the or each switching element (46) to block the converter (20); the circuit interruption device (50) to electrically isolate the converter (20) from the AC network (40); and the DC voltage modification device to reduce or minimise a DC voltage presented by the DC network (36) to the DC side of the converter (20).
H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
H02M 7/757 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs
70.
IMPROVEMENTS IN OR RELATING TO CHAIN-LINK MODULES FOR VOLTAGE SOURCE CONVERTERS
In the field of chain-link modules for voltage source converters, there is a need for an improved chain-link module. A chain-link module (10), for connection in series with other chain-link modules to form a chain-link converter selectively operable to provide a stepped variable voltage source within a voltage source converter, comprises a first pair (12) of series-connected switching elements (14A, 14B) which are separated by a first connection terminal (16) and are connected in parallel with first and second series-connected energy storage devices (18, 20). The chain-link module (10) also includes a second pair (22) of series-connected switching elements (14C, 14D) that are separated by a second connection terminal (24), and which are connected in parallel with one or other of the first and second energy storage devices (18, 20). Switching of the switching elements (14A, 14B, 14C, 14D), in use, selectively: (i) directs current (I) through the first and second energy storage devices (18, 20), whereby the chain-link module (10) provides a positive voltage across the first and second connection terminals (16, 24); (ii) causes current (I) to bypass the first and second energy storage devices (18, 20) whereby the chain-link module (10) provides zero voltage; and (iii) directs current (I) through the one of the first and second energy storage devices (18, 20) with which the second pair (22) of switching elements (14C, 14D) is connected in parallel, whereby the chain-link module (10) provides a negative voltage across the first and second connection terminals (14, 24).
This application describes methods and apparatus for HVDC power distribution. A control apparatus (108) is described for controlling a frequency set-point for a first AC network (104) electrically connected to a first HVDC station (101) to regulate active power. The controller has a frequency controller (501) operable in a first mode of operation to determine a frequency set-point (Fref) for the first AC network (104) based on a measured DC voltage (VDC1) at the first HVDC station. A disturbance detector (601) is configured to monitor the measured value of DC voltage at the first HVDC station (VDC1) for a predetermined characteristic indicative that a variation in measured DC voltage does correspond to a known modulation applied to the DC voltage by a second HVDC station (102). The frequency controller is configured to determine the frequency set-point (Fref) for the first AC network (104) based on a measured value of DC voltage (VDC1) if said predetermined characteristic is detected, and to control the frequency set- point to a predetermined default frequency if said predetermined characteristic is not detected.
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase
72.
USE OF A TRANSITION METAL OXIDE FOR REMOVING FLUORINATED BY-PRODUCTS FROM A GAS, DEVICE AND METHOD FOR REMOVING SUCH BY-PRODUCTS
The present invention relates a method for removing by-products from a gas (10) comprising such by-products, the by-products comprising fluoronitrile compounds and/or fluorocarbon compounds. This method comprises a step (a) of contacting the gas (10) with a solid adsorbent phase (11) that comprises a molecular sieve and further comprises at least one transition metal oxide. The present invention also relates to a device (5, 6) for removing fluorinated by-products from a gas (10) comprising such fluorinated by-products and to the use of at least one transition metal oxide in a solid adsorbent phase (11) comprising a molecular sieve for removing by-products from a gas (10) comprising said by-products, the by-products comprising fluoronitrile compounds and/or fluorocarbon compounds.
B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
The invention concerns a double-motion circuit breaker (10) comprising primary and secondary movable contacts (25, 55) slidingly mounted within primary and secondary holders (20, 50), wherein the primary movable contact (25) comprises a tulip (26) and a contact cylinder (28) attached thereto, and the secondary movable contact (55) comprises a pin (56) for engaging the tulip (26) but no counter-contact for engaging the contact cylinder (28). The circuit breaker (10) also has a non-linear linkage mechanism (80) with a pin and slot mechanism (83), and a fixed dielectric shield (66) provided on the secondary holder (50). During disconnection, the linkage mechanism (80) is preferably arranged to move the pin (56) more than the tulip (26), proportionally to their maximum stroke, so as to quickly bring the pin tip (56A) within the fixed dielectric shield (66), whereafter the tulip (26) moves more than the pin (56). This circuit breaker (10) is cheaper, lighter and can be disconnected more quickly.
There is provided a converter (20) for connection to at least one electrical network (36,40), the converter (20) comprising at least one module (44), the or each module (44) including at least one switching element (46) and at least one energy storage device (48), the or each switching element (46) and the or each energy storage device (48) in the or each module (44) arranged to be combinable to selectively provide a voltage source, the converter (20) including a controller (50) configured to selectively control switching of the or each switching element (46) of the or each module (44) in a voltage regulation mode so that a voltage level of the or each energy storage device (48) is regulated within a or a respective hysteresis band, wherein the controller (50) is configured to modify the hysteresis band of the or each energy storage device (48) to reduce a peak voltage value of voltage ripple of the or each energy storage device (48).
In the field of high voltage direct current (HVDC) power transmission, there is a need for an improved power dissipating converter (30). A power dissipating converter (30) for use with a power converter (10) configured to convert between AC power and DC power, comprises first and second DC terminals (12, 14) for connection to a DC network (20). The power dissipating converter (30) also includes a converter limb (32) that extends between the first and second DC terminals (12, 14) and which includes first and second limb portions (34, 36) that are separated by a ground terminal (38) for connection to ground (40). Each limb portion (34, 36) includes a chain- link converter (44) which is connected in series with a power dissipating resistor (46). Each chain-link converter (44) includes a plurality of series-connected chain-link modules (48), and each chain-link module (48) includes a plurality of switching elements (50) that are connected in parallel with an energy storage device (52) whereby each chain-link module (48) is selectively operable to provide a voltage source and the corresponding chain-link converter (44) is selectively operable to provide a stepped variable voltage source. The power dissipating converter (30) further includes a controller (70) which is programmed to operate the power dissipating converter (30) in first and second modes, the first mode being an inactive mode in which the power dissipating converter (30) is prevented from exchanging current with a DC network (20) connected in-use to the first and second DC terminals (12, 14) and no power from the DC network (20) is dissipated by either power dissipating resistor (46), and the second mode being an active mode in which the power dissipating converter (30) exchanges a discharge current with the DC network (20) and power from the DC network (20) is dissipated by each power dissipating resistor (46). The controller (70) is further programmed to operate the power dissipating converter (30) in a third mode, the third mode being a balancing mode in which the controller (70) causes a balancing current (I) smaller than the discharge current to flow through each chain-link converter (44).
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
76.
IMPROVEMENTS IN OR RELATING TO POWER DISSIPATING CONVERTERS
In the field of high voltage direct current (HVDC) power transmission, there is a need for an improved power dissipating converter (30). A power dissipating converter (30) for use with a power converter (10) configured to convert between AC power and DC power, comprises first and second DC terminals (12, 14) for connection to a DC network (20). The power dissipating converter (30) also includes a converter limb (32) that extends between the first and second DC terminals (12, 14) and which includes first and second limb portions (34, 36) that are separated by a ground terminal (38) for connection to ground (40). Each limb portion (34, 36) includes a chain- link converter (44) which is connected in series with a power dissipating resistor (46). Each chain-link converter (44) includes a plurality of series-connected chain-link modules (48), and each chain-link module (48) includes a plurality of switching elements (50) that are connected in parallel with an energy storage device (52) whereby each chain-link module (48) is selectively operable to provide a voltage source and the corresponding chain-link converter (44) is selectively operable to provide a stepped variable voltage source. The power dissipating converter (30) further includes a controller (70) which is programmed to operate the power dissipating converter (30) in first and second modes, the first mode being an inactive mode in which the power dissipating converter (30) is prevented from exchanging current with a DC network (20) connected in-use to the first and second DC terminals (12, 14) and no power from the DC network (20) is dissipated by either power dissipating resistor (46), and the second mode being an active mode in which the power dissipating converter (30) exchanges a discharge current with the DC network (20) and power from the DC network (20) is dissipated by each power dissipating resistor (46). The controller (70), when operating the power dissipating converter (30) in the first inactive mode, is programmed to prevent an exchange of current with the in-use connected DC network (20) by controlling the chain-link modules (48) in each chain-link converter (44) to store an individual energy amount whereby the cumulative voltage source provided by the sum of all of the individual energy amounts in a respective chain-link converter (44) is equal to the DC voltage presented at the corresponding DC terminal (12, 14).
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
77.
GAS INSULATING DEVICE WITH ANTI-LIQUIFICATION MEANS
A medium or high voltage electrical device (10) and method of maintaining the composition of an insulating gas mixture in a medium or high voltage electrical device, where the device (10) comprises a sealed chamber (12), said sealed chamber (12) comprising electrical components; a gas mixture ensuring electrical insulation and/or extinguishing of electrical arcs produced in this chamber, wherein the gas mixture comprises at least one insulating gas and at least one dilution gas; and a receptacle (20), said receptacle (20) comprising an opening (26), at least one wall (22, 24), wherein at least one wall (22, 24) is a heatable wall (24), and wherein said receptacle is positioned to receive liquefied gas; the device (10) further comprising a heating element (42) for heating the heatable receptacle wall (22, 24); and a dielectrically and thermally insulating layer (30) located between the heatable receptacle wall (24) and the chamber (12).
Embodiments of the present disclosure relate to a control cubicle (101) in a substation. The power equipment protection system (100) comprises a controller (201) configured to operate the circuit breaker (102) and monitor insulating fluid in the circuit breaker (102). The controller (201) generates a first signal (205) indicative of an operating condition of the controller (201) and a second signal (206) indicative of a level of the insulating fluid. The power equipment protection system (100) further comprises a logic block (202) configured to compare the first signal (205) with a power signal (209) received from a client server (103) to determine the operating condition of the controller (201) as one of healthy condition or an unhealthy conditi on and generate a third signal (207) when the operating condition is unhealthy condition, where the third signal (207) is provided to the client server (103) for scheduling maintenance activity.
H02H 3/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec signalisation ou supervision additionnée à la déconnexion, p.ex. pour indiquer que l'appareil de protection a fonctionné
G01R 31/327 - Tests d'interrupteurs de circuit, d'interrupteurs ou de disjoncteurs
H02H 5/08 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une pression de fluide, à un niveau de liquide ou à un déplacement de liquide anormal, p.ex. relais Buchholz
There is provided an electrical assembly comprising a converter (20) for connection to an electrical network (40), the converter (20) comprising at least one module (44) including at least one switching element (46) and at least one energy storage device (48), the or each switching element (46) and the or each energy storage device (48) in the or each module (44) arranged to be combinable to selectively provide a voltage source, the electrical assembly including a controller (54) configured to selectively control the switching of the or each switching element (46) in the or each module (44), wherein the electrical assembly includes a sensor (56a) configured for measuring a current of the electrical network (40), wherein the controller (54) and sensor (56a) are configured to operate in coordination to carry out a characterisation of an electrical parameter of the electrical network (40) so that, in use: the controller (54) selectively controls the switching of the or each switching element (46) in the or each module (44) to modify an electrical parameter of the converter (20) so as to modify the current of the electrical network (40); the sensor (56a) measures a resultant modified current of the electrical network (40); and the controller (54) processes the measured resultant modified current of the electrical network (40) so as to characterise the electrical parameter of the electrical network (40).
H02J 1/02 - Dispositions pour réduire les harmoniques ou les ondulations
H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
H02J 3/01 - Dispositions pour réduire les harmoniques ou les ondulations
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
G01R 27/16 - Mesure de l'impédance d'un élément ou d'un réseau dans lequel passe un courant provenant d'une autre source, p.ex. câble, ligne de transport de l'énergie
Embodiments of the disclosure can include systems and methods for limiting transient over-voltages occurring across a circuit breaker. These embodiments include providing a middle tank portion. They further include providing a first portion coupled to a first side of the middle tank portion, and a second portion coupled to a second side of the middle tank portion. They further include providing a first high voltage terminal coupled to the first portion, and a second high voltage terminal coupled to the second portion. They further include providing a post insulator supported and extending from the middle tank portion. They further include providing a first surge arrester connecting the first high voltage terminal to a first connector extending from the post insulator, and a second surge arrester connecting the second high voltage terminal to a second connector extending from the post insulator.
A bowl mill (100) includes upper (110) and lower (120) housing arrangements, and a labyrinth structure (130) separating thereto. The upper housing (110) includes a bowl hub (112) and a shaft (113) that vertically extend along the bowl hub (112), and an interior space (114) surrounding the bowl hub (112) and the shaft (113), to receive hot air and coal dust during coal pulverization. The lower housing (120) includes a gear box arrangement (121) that rotates the shaft (113). The bowl mill (100) includes a self-compensating sealing arrangement (140) circumferentially arranged between the labyrinth structure (130) and the bowl hub (112). The sealing arrangement (140) biases towards the bowl hub (112) to compensate a gap arises due to wear and tear of the sealing arrangement (140) during the coal pulverization to prevent the hot air and coal dust of the interiors space (114) to move in the lower housing (120).
Disclosed is a beater plate (10) for a dynamic beater wheel (100) in a beater mill assembly (1000) for pulverizing coal. The beater plate (10) includes a layer of hard-faced surface (12). The layer of hard-faced surface (12) is obtained by hardfacing a surface of the beater plate receiving the coal. The beater plate (10) further includes a layer of coating (14) comprising hard particles. The layer of coating (14) is disposed over the layer of hard-faced surface (12). The hard particles of the layer of the coating are uniformly dispersed in the metal matrix of the beater plate (10), and wherein the hard particles are having more than 50wt% of particles of the coating uniformly dispersed in the metal matrix of the plate (10). Also disclosed is a process of making the beater plate (10), and configuration of the beater plate (10) with the dynamic beater wheel (100).
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
B02C 13/13 - Désagrégation par appareils à batteurs rotatifs à axe horizontal, combinés avec des dispositifs de tamisage, p.ex. pour fabriquer du combustible pulvérulent
83.
IMPROVEMENTS IN OR RELATING TO HVDC CONVERTER STATIONS
In the field of high voltage direct current (HVDC) power transmission, a single-phase three- winding converter transformer (22), for connection with a converter (14) in a valve hall (12) of a HVDC converter station (10), comprises a first side (36) which in use faces the valve hall (12). First and second star bushings (38, 40) protrude from the first side (36) and are connectable in use to one or more further converter transformers (22) and the converter (14) in a star configuration. First and second delta bushings (42, 44) protrude also from the first side (36) and are connectable in use to one or more further converter transformers (22) and the converter (14) in a delta configuration. The first and second star bushings (38, 40) are spaced diagonally relative to one another on the first side (36), and the first and second delta bushings (42, 44) are spaced diagonally relative to one another on the first side (36).
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
H01F 30/06 - Transformateurs fixes non couverts par le groupe caractérisés par la structure
H01F 27/04 - Passages de conducteurs ou d'axes à travers les enveloppes, p.ex. pour dispositifs de changement de prise
A method is provided for selecting submodules of a valve of modular multilevel converter in order to generate a desired valve output voltage. The method comprises: obtaining (410) a voltage value for each submodule of the valve indicative of a voltage across an energy storage element of the submodule; for each submodule of the valve: if the submodule was previously selected: (420) adding or subtracting a first shift voltage value to the obtained voltage value for the submodule based on a sign of a current in the valve to generate a modified voltage value for the submodule; and adding (430) the submodule to a histogram according to the modified voltage value for the submodule; if the submodule was not previously selected: adding (430) the submodule to a histogram according to the voltage value for the submodule. No submodules, one submodule or more than one submodule, are selected (440), based on their ranking in the histogram, to activate so as to generate the desired valve output voltage.
A circuit breaker with metallic enclosure (1) comprises a chamber (3). The chamber comprises a first compartment (31) and a second compartment (32) enclosing an interior volume. The first and second compartments are electrically insulated from each other. A switching actuator (34) is displaceably provided inside at least one of the compartments (31, 32) and configured and adapted to selectively provide electric connection between the compartments. A sealed tank (2) encloses the chamber and is electrically insulated from the chamber, whereby an exterior volume (211) is provided between a wall of the tank and the chamber. The tank and the compartments contain a dielectric gas, and the interior (311, 321) of each compartment of the chamber is fluidly connected to the exterior volume (211) by a flow path having an overall flow cross section. The flow path between the interior volume of each of the compartments and the exterior volume is subdivided into a multitude of ducts, each duct having a partial flow cross section, a hydraulic diameter and a length, wherein the length of each duct is at least twice the hydraulic diameter of the duct.
H01H 33/74 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc comportant des organes fixes pour diriger l'écoulement du fluide extincteur d'arc, p.ex. chambre d'arc dans lesquels la coupure s'opère dans un gaz
A molten salt central receiver arrangement for transferring heat from panels to a molten salt that flows through the panels. A control device allows to change the condition of at least one of the panel arrangements of the molten salt central receiver arrangement depending on at least an operating parameter of at least one panel and/or depending on an environment signal that characterizes the actual or forecast available heat for the heat transfer to the molten salt. In normal operation passes, each having one or more panels, are connected in series such that molten salt flows in a serpentine or alternating way upward and downward through subsequent passes. In a parallel flow condition, molten salt may flow upward through all of the panels in parallel. In a drain condition, the molten salt is forced out of one or more panels and replaced by compressed air.
F24S 50/40 - Agencements pour commander les collecteurs de chaleur solaire sensibles à la température
F24S 50/80 - Agencements pour commander les collecteurs de chaleur solaire pour contrôler la collecte ou l’absorption de la radiation solaire
F24S 20/20 - Collecteurs de chaleur solaire pour recevoir de l’énergie solaire concentrée, p.ex. récepteurs pour centrales électriques solaires
F24S 40/60 - Agencements pour le drainage du fluide vecteur
F24S 60/00 - Agencements pour l’emmagasinage de la chaleur collectée par les collecteurs de chaleur solaire
F24S 50/00 - Agencements pour commander les collecteurs de chaleur solaire
F28D 20/00 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en général; Appareils échangeurs de chaleur de régénération non couverts par les groupes ou
This application describes methods and apparatus for voltage control, in particular, of an energy storage element (103) of a cell (200) or sub-module of a voltage source converter (400).The cell (200) is operable in a first switch state, with negative and positive terminals of the energy storage element connected to a first (101) and second (102) cell terminals respectively,andalso in a second switch state in which the cell terminals (101, 102) are electrically connected in a path that bypasses the energy storage element. A discharge module (201) is connected in series between the cell terminals (101,102) and includes a line-commutated switching element (202) which transitions from a conductive state to anon-conductive state if a current/voltage through/across the first switching element drops below a threshold. A controller (204), in response to a fault condition, controls the cell to be in the first switch state with the first element (202) in the conductive state.The controller is operable to switch to the second switch state to shutdown conduction via the discharge module.
There is provided a current control circuit (20) for connection between a first electrical network (42) and a converter, the current control circuit (20) comprising: first and second input terminals (24, 26) for connection to the first electrical network (42); first and second output terminals (28,30) for respective connection to converter terminals (46,48) of the converter; first and second switching limbs, the first switching limb interconnecting the first input and output terminals (24, 28), the second switching limb interconnecting the second input and output terminals (26, 30), each switching limb including a respective switching element (32, 34, 36, 38); a director limb (76) extending between the first and second output terminals (28, 30), the director limb (76) including at least one current director element (84) and at least one first resistive element (86), the director limb (76) including an intermediate terminal (82); a second resistive element (88), a first end of the second resistive element (88) operably connected to the intermediate terminal (82), a second end of the second resistive element (88) operably connectable to ground; and a controller (96) programmed to selectively control switching of each switching element (32, 34, 36, 38) so as to, in use, regulate a flow of current from the first electrical network (42) to the converter.
H02M 3/07 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des résistances ou des capacités, p.ex. diviseur de tension utilisant des capacités chargées et déchargées alternativement par des dispositifs à semi-conducteurs avec électrode de commande
H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
H03K 3/57 - Générateurs caractérisés par le type de circuit ou par les moyens utilisés pour produire des impulsions par l'utilisation d'un élément accumulant de l'énergie déchargé dans une charge par un dispositif interrupteur commandé par un signal extérieur et ne comportant pas de réaction positive le dispositif de commutation étant un dispositif à semi-conducteurs
An electrical assembly comprises a plurality of modules (36), each module (36) including at least one switching element (38) and at least one energy storage device (40), the or each switching element (38) and the or each energy storage device (40) in each module (36) arranged to be combinable to selectively provide a voltage source, wherein each module (36) includes a respective sensor (46) that is configured to monitor at least one other of the plurality of modules (36), each sensor (46) configured to selectively detect an occurrence of an operational hazard in the or each corresponding monitored module (36).
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02H 7/12 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour redresseurs pour convertisseurs ou redresseurs statiques
H01H 1/52 - Moyens pour accroître la pression de contact, empêcher la vibration des contacts, maintenir ensemble les contacts après l'entrée en contact, ou pour ramener les contacts à la position d'ouverture contacts adaptés pour agir comme verrous
H01H 31/02 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs - Détails
A system and method for reading a barcode (103) displayed on an object (100) is provided. The system includes a plurality of cameras (155) communicatively coupled to an image processor (177), and a controller device (133) communicatively coupled to the plurality of cameras (155) and the image processor (177). The plurality of cameras (155) are arranged to define a first opening (151) therebetween sized to receive the object (100) therein. The controller device (133) triggers an operation of each camera. Each camera is operative to capture a respective image of a different corresponding portion of the surface (101) of the object (100), and to send the respective image to the image processor (177). The image processor (177) is configured to combine the respective images received from each camera into a composite image, and to read a barcode (103) from the composite image.
G01N 35/00 - Analyse automatique non limitée à des procédés ou à des matériaux spécifiés dans un seul des groupes ; Manipulation de matériaux à cet effet
92.
2CFCN AND A CIRCUIT BREAKER INCLUDING SUCH A NOZZLE
The invention relates to an electric arc-blast nozzle (5) for a circuit breaker comprising a middle portion (7) forming a throat defining internally an axial passage (13) for interrupting an electric arc, and two end portions (9, 11) extending on either side of the middle portion (7) and being designed to receive respective arcing contacts (1) and (3) that are movable axially relative to each other. The middle portion (7) and the two end portions (9, 11) are made of a same dielectric material obtained from a composition comprising a fluorocarbon polymer matrix, at least one inorganic filler and micro-capsules of liquid heptafluoro- iso-butyronitrile. The invention also relates to a circuit breaker including such a nozzle (5).
H01H 33/22 - Emploi particulier de fluides pour extinction d'arcs
H01H 33/70 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc
H01H 33/76 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc dans lesquels un gaz extincteur d'arc est dégagé par des organes fixes; Emploi de matériaux spécifiés dans ce but
H01H 33/78 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc dans lesquels un gaz extincteur d'arc est dégagé par des organes fixes; Emploi de matériaux spécifiés dans ce but dans lesquels la coupure s'opère dans un gaz
A switching valve, for connection between first and second terminals (24, 26, 34) of a converter (20), comprises: a switching module (44) including at least one module switching element (46) and at least one energy storage device (48), the or each module switching element (46) and the or each energy storage device (48) in the switching module (44) arranged to be combinable to selectively provide a voltage source; a bypass device (38) including at least one bypass switching element (56), the or each bypass switching element (56) configured to be switchable to switch the bypass device (38) into a bypass mode by forming a bypass current path through which a current of the switching valve flows to bypass the switching module (44); a discharge circuit including at least one discharge switching element (50), the or each discharge switching element (50) configured to be switchable to switch the discharge circuit into a discharge mode by forming a discharge current path through which a discharge current flows to discharge an energy stored in the or each energy storage device (48); and a controller (54) configured to selectively control the switching of the or each discharge switching element (50) so as to carry out a switching operation responsive to receipt of a signal for triggering a switching of the bypass device (38) into the bypass mode, the switching operation including switching the discharge circuit into the discharge mode to discharge an energy stored in the or each energy storage device (48) before the bypass device (38) is switched into the bypass mode and/or while the bypass device (38) is in the bypass mode.
The present disclosure relates to an electronic valve apparatus for a high voltage direct current, HVDC, power transmission system. The electronic valve apparatus comprises a first device chain (301) including a plurality of first devices (302, 303) connected in series between an input node (330) and an output node (332) of the electronic valve apparatus (300, 400, 500). Each of the plurality of first devices (302, 303) has an asymmetric transfer function configured substantially to block current flow through the device in a first direction, and the plurality of first devices (302, 303) are connected such that they all block current flow in the same direction. The electronic valve apparatus also includes a second device chain (311) including a plurality of second devices (312, 313) connected in series between the input node (330) and the output node (332). Each of the plurality of second devices (312, 313) has an asymmetric transfer function configured substantially to block current flow through the device in a first direction, and the plurality of second devices (312, 313) are connected such that they all block current flow in the same direction. The second device chain (311) is connected in parallel with the first device chain (301).
H03K 17/10 - Modifications pour augmenter la tension commutée maximale admissible
H03K 17/082 - Modifications pour protéger le circuit de commutation contre la surintensité ou la surtension par réaction du circuit de sortie vers le circuit de commande
H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec des moyens pour accroître la fiabilité, p.ex. dispositifs redondants
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
The present invention relates to a high voltage direct current (HVDC) transmission system (200) comprising a first bipole (210) comprising a first transmit station (220) and a first receive station (230) and a second bipole (250), connected to the first bipole (210), the second bipole (250) comprising a second transmit station (260) and a second receive station (270). The HVDC transmission system includes: a first HVDC transmission line (280) for coupling a negative node (2206) of the first transmit station (220) to a negative node (2306) of the first receive station (230); a second HVDC transmission line (290) for coupling a positive node (2208) of the first transmit station (220) to a positive node (2308) of the first receive station (230); a dedicated metallic return (DMR) (285, 295) for coupling a neutral node (2210a) of the first transmit station (220) to a neutral node (2310) of the first receive station (230).
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
In the field of high voltage direct current (HVDC) transmission, a voltage source converter (10) comprises first and second DC terminals (12, 14) that are for connection to a DC network (16). The voltage source converter (10) also includes at least one converter limb (18). The or each converter limb (18) extends between the first and second DC terminals (12, 14) and includes first and second limb portions (20, 22) that are separated by a respective AC terminal (24) for connection to a corresponding phase of an AC network (26). Each first limb portion (20) extends between the first DC terminal (12) and a corresponding AC terminal (24), and each second limb portion (22) extends between the second DC terminal (14) and the corresponding AC terminal (24). Each limb portion (20, 22) includes a respective chain-link converter (28) which is defined by a plurality of series-connected switching modules (30) which are operable in combination to provide a stepped variable voltage source. In addition the voltage source converter (10) also includes a control apparatus (32) that is configured to coordinate operation of the chain-link converters (28) to cause an exchange of power between the DC and AC networks (16, 26). The control apparatus (32) evaluates the combined performance of the switching modules (30) within at least one chain-link converter (28) and acts to modify the coordinated operation of the chain-link converters (28) when the combined performance of the said switching modules (30) becomes degraded to a predetermined extent.
There is provided an apparatus (20) for monitoring a condition of an electrical power transmission medium (22), the apparatus (20) comprising: a signal source (24) for transmitting a signal (30) to travel along the electrical power transmission medium (22); and a monitoring device (26) configured to detect one or more reflected signals (34) in the electrical power transmission medium (22), wherein the monitoring device (24) is configured to use the or each detected reflected signal (34) to determine a change in capacitance of the electrical power transmission medium (22).
A converter system for use in a converter (100), the converter having at least one converter apparatus (101a, 101b) defining a current path within the converter, the system comprising: a plurality of sub-modules (102) connectable in series to form at least part of the converter apparatus such that current flowing along the current path flows through each of those sub-modules, each sub-module (102) comprising an energy storage device (202) and switching circuitry (201, 203, 204, 205) configured to direct the flowing current so that it either flows through or bypasses the energy storage device (202), the switching circuitry (201, 203, 204, 205) controllable to cause the sub-module (102) to transition between at least one pair of different configurations via a corresponding intermediate configuration, that transition affecting a potential difference such that it exhibits an associated change either when the sub-module (102) is in the intermediate configuration concerned or after it has exited that intermediate configuration dependent on a direction of current flow along the current path for that transition; and a controller (104, 103a, 3b, 206) configured to carry out a direction-determination operation in respect of at least one said sub-module (102), the direction-determination operation determining the direction of current flow along the current path for a said transition of that sub-module (102) by measuring the affected potential difference concerned at least once over that transition to determine whether the associated change occurs when that sub-module (102) is in the intermediate configuration concerned or after it has exited that intermediate configuration.
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
Modular multilevel converter (MMC) apparatus and control methods are described in which a differential current reference value for controlling the MMC may be determined. The differential current reference value may be determined using an indication of a departure of the total energy and/or voltage of a first and second valve of the MMC from an intended value, an indication of a departure of the difference between the first and the second valve submodule differential energy and/or voltage from an intended value and a feed forward reference control signal based on at least one measured electrical parameter of the MMC.
A voltage source converter (30) comprises first and second DC terminals (32, 34) for connection to a DC network (54), the voltage source converter (30) further comprising an AC phase terminal (36) for connection to a phase of an AC network (54), the voltage source converter (30) including a limb (38) connected between the first and second DC terminals (32, 34), the limb (38) including first and second sub-limbs connected between the first and second DC terminals (32, 34), each sub-limb including a phase element, each phase element including a plurality of switching elements and at least one AC terminal, the or each AC terminal of each phase element operably connected to the AC phase terminal (36), the plurality of switching elements of each phase element configured to be switchable to selectively interconnect a DC side voltage at a DC side of the phase element and an AC side voltage at an AC side of the phase element, each sub-limb further including at least one energy storage device connected at the DC side of the phase element, wherein the voltage source converter (30) further includes a controller (62) programmed to control the switching of the switching elements of the phase elements so as to control each phase element to switch between: a first operating mode to control the configuration of an AC voltage waveform at the or each corresponding AC terminal to have a positive phase shift relative to an AC voltage waveform at the AC phase terminal (36); and a second operating mode to control the configuration of an AC voltage waveform at the or each corresponding AC terminal to have a negative phase shift relative to the AC voltage waveform at the AC phase terminal (36).
brevets
