Electric power delivery system monitoring, control, and protection using a transmission of a first stream of power system information and a second stream of power system information, where the second stream is a lower-resolution cumulation of the information in the first stream is disclosed herein. The power system information may be in the form of energy packets. When a packet from the first stream is lost, the receiving device may use the second stream to calculate a value for the lost packet from the first stream. The calculated value of the lost packet may be used to correct or remediate for a protection or control operation that was previously determined.
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
Disclosed herein are systems, devices, and methods for improving cybersecurity in electric power systems. In one embodiment, a local controller configured for use in an electric power system may include a measurement subsystem to receive a plurality of conditions related to electrical conditions in a microgrid. A communication subsystem may communicate a set of data related to conditions in the microgrid to a remote controller; and receive a plurality of requests for control actions from the remote controller. An analysis subsystem may generate an assessment of the plurality of requests for control actions in relation to the plurality of conditions related to electrical conditions in the microgrid and identify a subset of the plurality of requests for control actions from the remote controller for execution based on the assessment. A control action subsystem may then issue a control action to an asset in the microgrid.
A method and a system are used to analyze incremental quantities. The electrical measurements associated with a loop in a multiple-phase electric power delivery system are obtained before a fault occurred on the loop and after the fault occurred on the loop, and differences between the electrical measurements are used to determine incremental quantities. The incremental quantities are used to determine a location of the fault on the loop. Multiple loops in the multiple-phase electric power delivery system may be monitored to determine corresponding fault locations on each loop.
Disclosed are systems and methods to determine a direction to a ground fault of an electrical generator or motor using a known steady-state standing error referenced to a positive-sequence voltage measurement to determine a system standing error and utilizing the system standing error to determine an operating current with anomalies attributable to a fault. A ground fault may be determined using zero-sequence voltage signals from the generator or motor installation. The operating current, along with the zero-sequence voltage, may be used to determine a direction to the fault. The generator or motor may be high-impedance grounded. The systems and methods further indicate the direction to a fault where multiple generators or motors are connected to a common bus.
Systems and methods may be used to assess network communications by generating one or more current communication parameters based on communications at an intelligent electronic device (IED) within an electric power delivery system. Network communications may be assessed by determining, at the IED, whether the communications fall within one or more thresholds for the current communication parameters.
H04L 43/0817 - Surveillance ou test en fonction de métriques spécifiques, p.ex. la qualité du service [QoS], la consommation d’énergie ou les paramètres environnementaux en vérifiant la disponibilité en vérifiant le fonctionnement
Various examples of systems and methods are described herein in which multiple intelligent electronic devices (IEDs) are connected in a network. A software-defined network (SDN) controller may include a rule subsystem, a test mode subsystem, a packet inspection subsystem, and a validation subsystem. The rule subsystem may define a plurality of flow rules. A test mode subsystem may operate the SDN in a testing mode. A packet insertion subsystem may insert test packets within the SDN while the SDN is in the testing mode. The validation subsystem may validate or fail each flow rule depending on how the various test packets are handled.
H04L 41/122 - Découverte ou gestion des topologies de réseau des topologies virtualisées, p.ex. les réseaux définis par logiciel [SDN] ou la virtualisation de la fonction réseau [NFV]
The present application discloses systems and methods related to protection of a reactor in an alternating current (AC) electric power system. In one embodiment, a system may include a protective action subsystem to implement a protective action based on identification of a fault condition associated with a reactor. A frequency determination subsystem may determine when a frequency of the AC voltage is outside of a range defined by a lower threshold and an upper threshold and may identify a change in the frequency associated with de-energization of a line in electrical communication with the reactor. A supervisory subsystem may restrain implementation of the protective action when the frequency is outside of the range or when the change in the frequency is associated with de-energization of the line in electrical communication with the reactor.
H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
H02H 7/22 - 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 dispositifs de commutation
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
H02J 3/01 - Dispositions pour réduire les harmoniques ou les ondulations
The present disclosure relates to systems and methods for calculating noise distributions in an electric power system. In one embodiment, a system to calculate a noise distribution in an electric power system may comprise a measurement subsystem to obtain a plurality of raw measurements of a parameter in the electric power system. A noise distribution determination subsystem may be configured to generate a plurality of scaled raw measurements from the plurality of raw measurements, generate a power spectrum density from the plurality of scaled raw measurements, generate a cumulative distribution from the power spectrum density, and determine a noise distribution from the power spectrum density. A protective action subsystem may monitor the parameter in the electric power system to identify a signal of interest by utilizing, at least in part, the noise distribution and generating a control action in response to the signal.
A configurable multi-sensor analog input may be utilized to connect a power system sensor to an intelligent electronic device. The configurable multi-sensor analog input may include an input port comprising a plurality of input pins and configured to receive electrical signals from one of a plurality of types of power system sensors. The configurable multi-sensor analog input may additionally include a plurality of input channels, each of the plurality of input channels coupled to a subset of the input pins, wherein the subset of input pins in electrical communication with of the plurality of types of power system sensors power system sensor is configured to selectively activate one of the plurality of input channels. A multiplexer may be in electrical communication with the plurality of input channels and configured to select an output based on the subset of input pins in electrical communication with one of the plurality of types of power system sensors.
G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p.ex. des transformateurs
G06F 1/26 - Alimentation en énergie électrique, p.ex. régulation à cet effet
G06F 13/42 - Protocole de transfert pour bus, p.ex. liaison; Synchronisation
The present disclosure pertains to devices, systems, and methods for monitoring a generator. In one embodiment, the system may include a measurement subsystem to receive a plurality of split-phase measurements of branch currents associated with the at least one generator. A split-phase transverse differential monitoring subsystem may receive the plurality of split-phase measurements of branch currents associated with the at least one generator and may generate an offset value representing a standing split-phase current. A protective action subsystem may generate a first protective action based on the phasor operating current.
A table assembly is used to support a workpiece to facilitate bending of the workpiece. The table assembly is attached to a press brake system and include a base and a clamp. The clamp is movable relative to the base to enable placement of the workpiece onto the base, and the clamp secures the workpiece to the base to block relative movement between the workpiece and the press brake system without additional user operations. The workpiece is secured via the table assembly without a manual force (e.g., to hold the workpiece in place) while the press brake system operates to bend the workpiece. The table assembly reduces, limits, or eliminates certain user operations during metalworking. The table assembly improves user experience (e.g., reduce an amount of manual labor) and/or efficiency associated with press brake operations.
B21D 5/04 - Cintrage des tôles le long de lignes droites, p.ex. pour former un pli simple sur des presses particulières avec fixation d'un côté de la pièce
Protection of shunt capacitor banks in electric power delivery systems using protection settings determined by the protection device or an independent system using capacitor bank arrangement data is described herein. Capacitor bank arrangement data may be entered into an intelligent electronic device (IED). The IED may determine protection settings for the capacitor bank arrangement and for fail-open and fail-short scenarios using the arrangement data. The protection settings may be loaded into a protection element, which applies protection using signals from the power system. Upon detection of an unbalance condition, the IED may effect a protective action by opening a circuit breaker to disconnect the capacitor bank from the power system.
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
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
14.
BREAKER CONTROL UNITS AND RELATED SYSTEMS AND METHODS
Breaker control units (BCUs) may include an output to selectively cause a circuit breaker (CB) to open and close a circuit, a voltage input to monitor a voltage of at least one of a bus and a line, a processor to calculate a point-on-wave switching time, and a remote input configured to be coupled to a remote intelligent electronic device (IED) to receive commands to selectively open and close the CB at a specified optimal time. Electric power systems may include such BCUs. Methods of switching CBs may include monitoring at least one of a bus and a line with a BCU and controlling switching of the CB at a predetermined point-on-wave value with onboard electronics of the BCU. The methods may additionally include calculating a trapped charge and/or a residual flux with an IED and causing the BCU to switch the CB at a specific optimum point-on-wave value.
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
H02B 1/30 - Enveloppes; Leurs parties constitutives ou accessoires à cet effet - Parties constitutives ou accessoires
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
Circuit breakers may perform a variety of operations, including isolating a faulty part of the power system that may result in a cascading outage. However, circuit breaker operations may cause wear and tear of the tripping assembly components, which eventually cause the circuit breaker to wear out. Additionally, long periods of non-operations may cause the mechanical parts inside a circuit breaker to move sluggishly or, in some instances, fail to move at all. In an embodiment, a system includes a circuit breaker that trips to control power flow and an intelligent electronic device (IED) including an electronic display. The IED receives measurement data associated with a trip event for the circuit breaker, generates a current profile based on the measurement data, and presents the current profile via the electronic display.
G01R 31/327 - Tests d'interrupteurs de circuit, d'interrupteurs ou de disjoncteurs
H01H 73/36 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel comportant un déclencheur électromagnétique mais aucun autre déclencheur automatique
H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation
A mount for an electronic device includes a first mount portion having a first base and a first extension extending crosswise to a first base surface of the first base. The mount also includes a second mount portion having a second base, a channel support extending from the second base, a lateral wall extending from the channel support, and a second extension extending crosswise to a second base surface of the second base. The second base, the channel support, and the lateral wall define a channel configured to receive the first base of the first mount portion, and the first base surface, the second base surface, the first extension, and the second extension cooperatively define a space configured to receive the electronic device.
Various examples of systems and methods are described herein in which multiple intelligent electronic devices (IEDs) are connected in a network. A software-defined network (SDN) controller may include a rule subsystem, a test mode subsystem, a packet inspection subsystem, and a validation subsystem. The rule subsystem may define a plurality of flow rules. A test mode subsystem may operate the SDN in a testing mode. A packet insertion subsystem may insert test packets within the SDN while the SDN is in the testing mode. The validation subsystem may validate or fail each flow rule depending on how the various test packets are handled.
H04L 12/803 - Commande de flux ou commande de congestion Équilibrage de charge, p.ex. répartition du trafic entre multiples liens
H04L 12/24 - Dispositions pour la maintenance ou la gestion
H04L 12/721 - Procédures de routage, p.ex. routage par le chemin le plus court, routage par la source, routage à état de lien ou routage par vecteur de distance
H04L 41/122 - Découverte ou gestion des topologies de réseau des topologies virtualisées, p.ex. les réseaux définis par logiciel [SDN] ou la virtualisation de la fonction réseau [NFV]
A device may include a loop detection subsystem to place a network flow on a first switch to forward any received open flow discovery protocol (OFDP) packets to the software-defined network (SDN) controller. The device may cause the first switch to egress a query OFDP packet out of a first port of the first switch. The device may detect that the first port on the first switch is attached to a network loop based on the same query OFDP packet being ingressed by the first port of the first switch. The device may implement a remedial action in response to the detected network loop.
Disclosed herein are systems for determining a broken conductor condition in a multiple-phase electric power delivery system. It has been observed that broken conductors pose a safety concern when occurring in the presence of people or vulnerable environmental conditions. Broken conductor conditions disclosed herein may be used to detect and trip the phase with the broken conductor, thus reducing or even eliminating the safety risk. Broken conductors may be determined using detected phase series arcing differences in one phase without commensurate differences in other phases. In various embodiments the phase series arcing attributes may be phase current monitored for decrement and/or phase resistance monitored for increase.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
20.
TOKEN-BASED ACCESS CONTROL WITH AUTHENTICATION DATA
The present disclosure relates to token-based authentication that uses authentication data including a personal identification number (PIN). For example, an issuer may obtain privilege information including the PIN. The issuer may combine the privilege information with authentication information. The issuer may determine an issuer hash value based on the combined privilege information and authentication information. The issuer may determine an encrypted hash value based on the issuer hash value and a private key of the issuer. The issuer may combine the privilege information with the encrypted hash value as a token. The issuer may then issue the token. The receiver can restrict allowed operations appropriately based on success decrypting the encrypted hash.
H04L 9/32 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
H04L 9/06 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité l'appareil de chiffrement utilisant des registres à décalage ou des mémoires pour le codage par blocs, p.ex. système DES
21.
DIRECT CURRENT MONITORING USING A CENTRALIZED PROTECTION AND CONTROL SYSTEM
The present disclosure pertains to devices, systems, and methods for monitoring a direct current (DC) system. In one specific embodiment, a system may include a centralized protection and control (CPC) system. The CPC system may include a DC interface configured to be in electrical communication with a first DC system and a communication subsystem configured to receive a first measurement, from a remote device, of at least one electrical parameter of the first DC system. The CPC system may also include a DC monitor subsystem to generate a second measurement of at least one electrical parameter of the first DC system based on the electrical communication between the DC interface and the first DC system and generate a comparison of the first measurement and the second measurement. An action subsystem may generate an action based on the comparison between the first measurement and the second measurement.
G05F 1/46 - Régulation de la tension ou de l'intensité là où la variable effectivement régulée par le dispositif de réglage final est du type continu
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
22.
INCORPORATION OF PARALLEL REDUNDANCY PROTOCOL IN A SOFTWARE DEFINED NETWORK
This disclosure pertains to identifying and configuring an in-band controller operating on a host in a software defined network (SDN), the host configured to use a parallel redundancy protocol (PRP). In one embodiment, a system may include a network in communication with the host, the network comprising a plurality of switches interconnected with a plurality of physical links. The in-band controller is in communication with the network and includes a PRP identification subsystem to generate a packet configured such that the network forwards the packet back to the in-band controller, to analyze the packet and determine that the packet conforms to PRP, and to identify a first communication host in communication with the network and configured to operate using PRP. A traffic routing subsystem of the in-band controller may create a plurality of PRP communication flows between the in-band controller and the first communication host.
An active capacitor discharge tool may include circuitry for efficiently discharging a capacitor. The active capacitor discharge tool may include batteries (or regulated voltage sources) for actively discharging a capacitor using multiple discharge paths. The active capacitor discharge tool may alternatively short the capacitor to a ground connection using the multiple discharge paths based on a timing associated with a clock frequency of a clock signal. Discharging a capacitor by alternatively grounding the capacitor using different discharge paths may distribute a generated discharging heat and may discharge the capacitor faster. Moreover, when a capacitor includes stored electrical charges corresponding to a capacitor voltage lower than a sufficiently discharged voltage to enable an operator to handle the capacitor, the active capacitor discharge tool may short an anode and a cathode of the capacitor to discharge the capacitor to the ground connection voltage level.
Devices, systems, methods, and techniques for multicast failover handling in a computer communication network are disclosed. The methods herein described are particularly suited to software-defined networks (SDNs), and comply with requirements for assuring delivery of network traffic to each destination from a source engaged in multicast network traffic dissemination, assured delivery of each data packet as introduced into the network by the source device and avoidance of duplicate delivery of data. The methods herein are agile and respond rapidly to changes in a network while traffic is on the network.
Devices, systems, methods, and techniques for multicast failover handling in a computer communication network are disclosed. The methods herein described are particularly suited to software-defined networks (SDNs), and comply with requirements for assuring delivery of network traffic to each destination from a source engaged in multicast network traffic dissemination, assured delivery of each data packet as introduced into the network by the source device and avoidance of duplicate delivery of data. The methods herein are agile and respond rapidly to changes in a network while traffic is on the network.
A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets, perform post-processing actions on the energy packets to generate processed energy packets, and convert the processed energy packets into a fuel valve reference. Post-processing may include a calibration correction to remove measurement artifacts.
H02P 9/04 - Commande s'exerçant sur un moteur primaire non électrique et dépendant de la valeur d'une caractéristique électrique à la sortie de la génératrice
F02C 9/26 - Commande de l'alimentation en combustible
H02P 9/10 - Commande s'exerçant sur le circuit d'excitation de la génératrice afin de réduire les effets nuisibles de surcharges ou de phénomènes transitoires, p.ex. application, suppression ou changement brutal de la charge
H02P 9/42 - Dispositions pour la commande de génératrices électriques de façon à obtenir les caractéristiques désirées à la sortie pour obtenir la fréquence désirée sans faire varier la vitesse de la génératrice
H02P 101/00 - Adaptation particulière des dispositions pour la commande de génératrices
A software-defined network (SDN) rule modification counter system provides counters that track all changes and edits to rules at SDN controllers and SDN switches on an SDN. The system compares counters at the SDN controller and SDN switch to determine if they match. If the counters do not match, a change has been made to the rules. With the addition of rule edit statistics the SDN controller will now have visibility that a rule modification was performed. The SDN controller then verifies that the state of the device is the same as its expected state as a secondary integrity check. Based on the rule modification notification, changes to a central rules table at the SDN controller and changes to rule settings at the SDN switch are made according to pre-programmed logic.
Systems and methods to send or receive redundant Generic Object Oriented Substation Event (GOOSE) messages are described. An intelligent electronic device may obtain power system data from a power system. The TED may publish the power system data in a first GOOSE message and publish the same power system data in a second GOOSE message. The second GOOSE message may have different header information than the first GOOSE message to allow the subscriber to determine that the redundant GOOSE messages are both received. If the first and second GOOSE message are duplicates with identical header information but unique trailer information methods allow the subscriber to determine that the duplicate GOOSE messages are both received.
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
H04L 69/22 - Analyse syntaxique ou évaluation d’en-têtes
H04L 67/12 - Protocoles spécialement adaptés aux environnements propriétaires ou de mise en réseau pour un usage spécial, p.ex. les réseaux médicaux, les réseaux de capteurs, les réseaux dans les véhicules ou les réseaux de mesure à distance
Systems and methods to send or receive redundant Generic Object Oriented Substation Event (GOOSE) messages are described. An intelligent electronic device may obtain power system data from a power system. The IED may publish the power system data in a first GOOSE message and publish the same power system data in a second GOOSE message. The second GOOSE message may have different header information than the first GOOSE message to allow the subscriber to determine that the redundant GOOSE messages are both received. If the first and second GOOSE message are duplicates with identical header information but unique trailer information methods allow the subscriber to determine that the duplicate GOOSE messages are both received.
H04L 43/08 - Surveillance ou test en fonction de métriques spécifiques, p.ex. la qualité du service [QoS], la consommation d’énergie ou les paramètres environnementaux
Methods and devices are provided for determining whether a phase is faulted or one or more phases are open in capacitor bank system. Detecting open and faulted phases may include determining a neutral current of the capacitor bank system. An open-phase event and a fault event may be distinguished based on a magnitude of a neutral current within a first or a second predetermined range. According to one embodiment, an IED may calculate an aggregate power phasor for the phases of the capacitor bank system with respect to each rotation. According to another detection method, in response to the magnitude of the neutral current being greater than a threshold value, an IED may calculate an individual power phasor for each of the phases of the capacitor bank system with respect to each rotation. Based on the angles of the power phases, the IED may determine which phases may be faulted.
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
G01R 25/00 - Dispositions pour procéder aux mesures de l'angle de phase entre une tension et un courant ou entre des tensions ou des courants
G01R 19/10 - Mesure d'une somme, d'une différence, ou d'un rapport
31.
LINEARIZED-TRAJECTORY PREDICTIVE CONTROL FOR MICROGRID STABILITY
Techniques and apparatus presented herein are directed to improvements in maintaining voltage and frequency stability of an electric power delivery system. To do so, model predictive control (MPC) may be used. Input data may be obtained for a sampling period and may include a current system state. The MPC may predict an initial trajectory of the input data, output data, and a state of the system for a prediction period. The MPC may linearize the output and state trajectories and determine an updated input trajectory based at least in part on the linearized output trajectory. The MPC may determine control inputs to the system which achieve the updated input trajectory for a control period. The MPC may transmit control signals based at least in part on the control inputs to equipment associated with the input data.
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
G05B 15/02 - Systèmes commandés par un calculateur électriques
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 power supply includes a Primary or “high voltage” side and a Secondary or “low voltage” side. The primary side has boost stage circuitry that includes a boost stage controller that causes the boost stage circuitry to provide electrical energy, at least at a minimum boost voltage, to an energy storage capacitor. The energy storage capacitor may be charged by electrical energy at the minimum boost voltage and discharge electrical energy during a ride through event to power the electronic device.
G06F 1/26 - Alimentation en énergie électrique, p.ex. régulation à cet effet
G06F 1/32 - Moyens destinés à économiser de l'énergie
G06F 1/3212 - Surveillance du niveau de charge de la batterie, p.ex. un mode d’économie d’énergie étant activé lorsque la tension de la batterie descend sous un certain niveau
G06F 1/3296 - Gestion de l’alimentation, c. à d. passage en mode d’économie d’énergie amorcé par événements Économie d’énergie caractérisée par l'action entreprise par diminution de la tension d’alimentation ou de la tension de fonctionnement
34.
Processing sinewave signals of variable frequency in a device with fixed processing rates
A method includes obtaining electrical measurements of an input signal of a power system. The electrical measurements are obtained at a sampling frequency and the input signal is indicative of an operating frequency of the power system. The method includes generating an intermediate signal from the input signal. The intermediate signal has a direct current (DC) component indicative of a magnitude and a phase of the input signal. The method includes filtering the intermediate signal using an adjustable length filter to obtain the magnitude and the phase of the input signal. The length of the adjustable length filter varies based at least in part on a period measurement of the power system.
G01R 23/02 - Dispositions pour procéder à la mesure de fréquences, p.ex. taux de répétition d'impulsions; Dispositions pour procéder à la mesure de la période d'un courant ou d'une tension
G06F 1/03 - Générateurs de fonctions numériques travaillant, au moins partiellement, par consultation de tables
G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
G01R 25/00 - Dispositions pour procéder aux mesures de l'angle de phase entre une tension et un courant ou entre des tensions ou des courants
Systems and methods described herein monitor real-time digital data for degradation. A merging unit may measure electrical parameters in an electric power system using a sensor component and may generate a stream of digital data representing measured electrical parameters. The merging unit may transmit the stream of digital data representing measured electrical parameters and receive a plurality of data frames using an interface. A digital data degradation detection subsystem may analyze a plurality of digital metrics associated with the plurality of data frames and make a determination of whether a subset of the plurality of data frames satisfies the plurality of digital metrics, and the subset of the plurality of data frames fails at least one of the plurality of digital metrics. The merging unit may implement a response when the subset of the plurality of data frames fails at least one of the plurality of digital metrics.
Signal transducers in electrical communication with shorted leads of current transformers are used to provide monitoring and protection functions to an electric power delivery system. Differential protection is performed by comparing a predetermined threshold against a voltage signal from series-connected leads of signal transducers in electrical communication with shorted leads of current transformers. The signal transducers may be Rogowski coils. Signal transducers in communication with shorted leads may be used to improve safety and increase performance of the current transformers by decreasing susceptibility to saturation.
H02H 7/045 - Protection différentielle de transformateurs
G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p.ex. des transformateurs
The present disclosure relates to systems and methods for processing a stream of messages in an electric power system (EPS). In one embodiment, a system may include a configuration subsystem to receive a plurality of criteria from an operator to identify a subset of the stream of messages for real-time processing. A receiver subsystem may identify the subset of the stream of messages based on at least one criterion from the plurality of criteria. A real-time processing subsystem may receive the subset of the stream of messages from the receiver subsystem, process the stream of messages within a fixed interval of a time of receipt, and update a value based on information in the processed stream of messages. A protective action subsystem may implement a protective action based on information in the processed stream of messages.
G06F 15/16 - Associations de plusieurs calculateurs numériques comportant chacun au moins une unité arithmétique, une unité programme et un registre, p.ex. pour le traitement simultané de plusieurs programmes
H04L 67/12 - Protocoles spécialement adaptés aux environnements propriétaires ou de mise en réseau pour un usage spécial, p.ex. les réseaux médicaux, les réseaux de capteurs, les réseaux dans les véhicules ou les réseaux de mesure à distance
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
38.
Incremental quantities-based fault locating technique and system
A technique and a system are used to analyze incremental quantities. The instantaneous electrical measurements associated with a loop in a multiple-phase electric power delivery system are obtained before a fault occurred on the loop and after the same fault occurred on the same loop, and differences between the instantaneous electrical measurements at different times are used to determine incremental quantities, which are used to determine a location of the fault on the loop. Multiple loops in the multiple-phase electric power delivery system are monitored to determine corresponding fault locations on each loop.
An electronic device includes a processor that performs a basic input/output system (BIOS) process to initialize hardware of the electronic device upon a first start up. The processor determines, within the BIOS process, that initialization of an operating system (OS) on the electronic device has not been performed. The processor waits to receive a user input indicating that the user is ready to initialize the OS, thus protecting the OS initialization process from unintended interruptions such as power loss that can cause the OS initialization to fail irreparably. Upon receiving the user input, the processor begins the OS initialization.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Electrical circuit condition monitoring devices, namely, electrical current fault indicators, electrical fault detectors, electrical voltage indicators, electrical voltage detectors, electrical power system protectors; electrical circuit condition monitoring devices having local and/or remote displays, namely, electrical current fault indicators, electrical fault detectors, electrical voltage indicators, electrical voltage detectors, electrical power system protectors; electrical instrument transformers; current transformers
41.
Coordination of protective elements in an electric power system
The present disclosure relates to systems and methods to coordinate protective elements in an electric power system (EPS). In one embodiment, a system may include a Time vs Normalized Impedance Length subsystem to determine a first plurality of times of operation of a first protective element for a plurality of fault locations in the EPS and to determine a second plurality of times of operation of a second protective element for the plurality of fault locations in the EPS. A protective action subsystem may coordinate a response of the first protective element and the second protective element. The protective action subsystem may establish a pickup and a protective action for the second protective element. Upon detection of a fault in the EPS, one of the first protective action and the second protective action may be implemented based on one of the first pickup and the second pickup.
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H02H 3/033 - 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 plusieurs déconnexions selon un ordre préférentiel
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 3/20 - 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 excès de tension
42.
SECURITY DEVICE TO PROTECT UNUSED COMMUNICATION PORTS
The present disclosure pertains to systems and methods to monitor communication ports. In one embodiment, a system may include a host device that generates a first flow of traffic to send via a host device communication port. A security dongle may receive the first flow of traffic via a security dongle communication port in communication with the host device communication port. The security dongle may generate a second flow of traffic. The security dongle may transmit the second flow of traffic through the security dongle communication port. The host device may receive the second flow of traffic from the host device communication port and may generate an alarm when the second flow of traffic deviates from an expected response. The communication between the host device and the security dongle allows the host device to detect when the security dongle is disconnected from the host device.
G06F 21/73 - Protection de composants spécifiques internes ou périphériques, où la protection d'un composant mène à la protection de tout le calculateur pour assurer la sécurité du calcul ou du traitement de l’information par création ou détermination de l’identification de la machine, p.ex. numéros de série
The present disclosure pertains to systems and methods to monitor communication ports. In one embodiment, a system may include a first interface to connect to a first host device and a second interface to connect to a second host device. The first interface and the second interface may include a plurality of channels to enable communication between the first host device and the second host device. Control logic may monitor a power channel between the first host device and the second host device and a communication channel between the first host device and the second host device. The control logic may detect an interruption of at least one of the power channel or the communication channel. In response to the interruption, the control logic may disable communication between the first host device and the second host device.
G06F 21/81 - Protection de composants spécifiques internes ou périphériques, où la protection d'un composant mène à la protection de tout le calculateur en agissant sur l’alimentation, p.ex. en branchant ou en débranchant l’alimentation, les fonctions de mise en veille ou de reprise
A split core current transformer (CT) includes a first CT core half and a first housing that houses the first CT core half. The split core CT includes a second core half and a housing that houses the second CT core half. The split core CT includes a first set of bushings configured to flexibly couple the first insulative body to the first housing to maintain contact between faces of the first CT core half and faces of the second CT core half.
G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p.ex. des transformateurs
A wireless radio repeater includes an antenna configured to receive a message associated with an electric power delivery system. The wireless radio repeater also includes circuitry configured to receive electrical measurement data, identify a condition of the electric power delivery system based on the electrical measurement data, and cause the antenna to re-transmit the message received via the antenna in response to identifying the condition based on the electrical measurement data.
Systems, devices, and methods include protection functions in an electrical power system. For example, a processing subsystem may include a processor. A memory subsystem may comprise a first memory section and a second memory section. A memory management subsystem may enable memory access only between the processor and only the first memory section to initialize the at least one protection function and, after initialization of the at least one protection function, enable memory access between the processor and the second memory section. Such a configuration may enable the protection functions as fast as possible without waiting for the functions of lesser criticality to be fully loaded and become operational.
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
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
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
47.
ISOLATION OF PROTECTION FUNCTIONS IN ELECTRICAL POWER SYSTEMS
Systems, devices, and methods include protection functions in an electrical power system. A processing subsystem may include a processor. A memory subsystem may comprise a first memory section and a second memory section. A memory management subsystem may, in a first operational mode, enable memory access between the processor and the first memory section and the second memory section and, in a second operational mode, enable memory access between the processor and only the first memory section.
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
G06F 3/06 - Entrée numérique à partir de, ou sortie numérique vers des supports d'enregistrement
48.
SYSTEMS AND METHODS FOR ESTABLISHING A BACKUP SECURE COMMUNICATION LINK IN AN ELECTRIC POWER DISTRIBUTION SYSTEM
A controller for an electric power distribution system includes processing circuitry and a memory that includes instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to determine that a first switch of the electric power distribution system is a primary switch communicatively coupled to an intelligent electronic device (IED) of the electric power distribution system, determine that a second switch of the electric power distribution system is a backup switch communicatively coupled to the IED, and distribute a first copy of a security association key (SAK) to the first switch and a second copy of the SAK to the second switch in response to determining that the first switch is the primary switch and the second switch is the backup switch to enable the first switch and the second switch to establish respective media access control security (MACsec) communication links with the IED.
Systems and methods are described herein to accommodate different settings associated with a converter-based electric power generator and an inverter-based electric power generator for electric power generation within an electric power delivery system. The electric power delivery system may provide electric power generated by a bulk electric system to the loads via distributed substations using a first operating frequency. Moreover, the distributed substations may include inverter-based electric power generators to supply the electric power demand of downstream loads in an islanded configuration. That said, the inverter-based electric power generators may supply the electric power using a second frequency that is higher than the first frequency. Protective systems, positioned downstream from the distributed substations, may use different settings associated with the bulk electric system or the inverter-based electric power generators based on detecting the frequency of the supplied electric power.
H02H 7/22 - 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 dispositifs de commutation
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
50.
Systems and methods for operating an islanded distribution substation using inverter power generation
Systems and methods are described herein to accommodate different settings associated with an inverter-based electric power generator and an inverter-based electric power generator for electric power generation within an electric power delivery system. The electric power delivery system may provide electric power generated by a bulk electric system to the loads via distributed substations using a first operating frequency. Moreover, the distributed substations may include inverter-based electric power generators to supply the electric power demand of downstream loads in an islanded configuration. That said, the inverter-based electric power generators may supply the electric power using a second frequency that is higher than the first frequency. Protective systems, positioned downstream from the distributed substations, may use different settings associated with the bulk electric system or the inverter-based electric power generators based on detecting the frequency of the supplied electric power.
H02H 7/22 - 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 dispositifs de commutation
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
Techniques and apparatus presented herein are directed toward monitoring an electric power delivery system to detect and locate a power generation event. A power generation event may include a tripped generator, a loss of a transmission line, or other loss of power generation. To detect the event, an analysis engine may receive and monitor input data. A detection signal may be generated based on the input data. Upon detecting the event, the analysis engine may determine a source and propagation of the event through the delivery system. Based on the source and propagation of the event, the analysis engine may determine the location of the event. The analysis engine may generate an overlay with the input data to provide the location and other information about the event to a user such that remedial action can be taken to resolve the event and restore the lost power generation.
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
G01R 25/00 - Dispositions pour procéder aux mesures de l'angle de phase entre une tension et un courant ou entre des tensions ou des courants
G06F 3/14 - Sortie numérique vers un dispositif de visualisation
H03H 17/00 - Réseaux utilisant des techniques numériques
52.
DETECTION OF PARALLEL REDUNDANCY PROTOCOL TRAFFIC IN SOFTWARE DEFINED NETWORKS
This disclosure pertains to systems and methods for identifying and configuring a host in a software defined network (SDN) configured to communicate using a parallel redundancy protocol (PRP). In one embodiment, a system may include a first communication host and a second communication host configured to transmit information through a network. An SDN controller in communication with the network may include a PRP identification subsystem to monitor traffic transmitted by the first communication host to the second communication host, determine that the traffic comprises at least one data packet that conforms to PRP. Upon detection of a host configured to use PRP, a traffic routing subsystem creates a plurality of communication flows between the first communication host and the second communication host to route PRP traffic between the first communication host and the second communication host.
H04L 12/24 - Dispositions pour la maintenance ou la gestion
H04L 12/26 - Dispositions de surveillance; Dispositions de test
H04L 12/707 - Prévention ou récupération du défaut de routage, p.ex. reroutage, redondance de route "virtual router redundancy protocol" [VRRP] ou "hot standby router protocol" [HSRP] par redondance des chemins d’accès
H04L 12/721 - Procédures de routage, p.ex. routage par le chemin le plus court, routage par la source, routage à état de lien ou routage par vecteur de distance
H04L 12/751 - Mise à jour ou découverte de la topologie
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
53.
Detection of in-band software defined network controllers using parallel redundancy protocol
This disclosure pertains to identifying and configuring an in-band controller operating on a host in a software defined network (SDN), the host configured to use a parallel redundancy protocol (PRP). In one embodiment, a system may include a network in communication with the host, the network comprising a plurality of switches interconnected with a plurality of physical links. The in-band controller is in communication with the network and includes a PRP identification subsystem to generate a packet configured such that the network forwards the packet back to the in-band controller, to analyze the packet and determine that the packet conforms to PRP, and to identify a first communication host in communication with the network and configured to operate using PRP. A traffic routing subsystem of the in-band controller may create a plurality of PRP communication flows between the in-band controller and the first communication host.
An electric power delivery system may include a number of electric power generators and loads distributed across a number of islands (e.g., branches). The electric power delivery system may also include reactors between each two islands of the electric power delivery system that may allow current flow between the islands. However, excessive current flow across the reactors may cause system failure and is undesirable. Accordingly, systems and methods are described to control reactive power and active power generation and consumption of the electric power delivery system to reduce (e.g., minimize) the current flow across the reactors.
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
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02J 3/16 - 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 réglage de puissance réactive
55.
Systems and methods for communicating data securely for an electric power delivery system
An intelligent electronic device (IED) of an electric power delivery system includes processing circuitry a memory that includes instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to receive first data via parallel redundancy protocol (PRP), generate a first integrity check value using a media access control security (MACsec) integrity check function based on the first data, receive second data via PRP, generate a second integrity check value using the MACsec integrity function based on the second data, compare the first integrity check value and the second integrity check value with one another, and output a notification in response to determining that the first integrity check value and the second integrity check value do not match one another.
G06F 21/00 - Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée
H04L 9/32 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
Methods and devices are provide for determining a failure in a potential transformer and identifying a phase of the potential transformer exhibiting failure. The failures may be incipient failures. Detecting the failure may include determining voltage magnitudes and angles; determining phase-errors; determining phase-phase errors; and determining an uncorrelated phase using the phase-phase errors. The devices and methods may provide an alarm or indication of the phase exhibiting the potential transformer failures. Post processing may be performed to optimize the time and amount of provided alarms or indications. The voltage angles and magnitudes may be provided by the potential transformers being monitored.
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
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
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
Techniques and apparatus presented herein are directed toward monitoring an electric power delivery system to detect and locate a power generation event. A power generation event may include a tripped generator, a loss of a transmission line, or other loss of power generation. To detect the event, an analysis engine may receive and monitor input data. A detection signal may be generated based on the input data. Upon detecting the event, the analysis engine may determine a source and propagation of the event through the delivery system. Based on the source and propagation of the event, the analysis engine may determine the location of the event. The analysis engine may generate an overlay with the input data to provide the location and other information about the event to a user such that remedial action can be taken to resolve the event and restore the lost power generation.
G01R 25/00 - Dispositions pour procéder aux mesures de l'angle de phase entre une tension et un courant ou entre des tensions ou des courants
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
G06F 3/14 - Sortie numérique vers un dispositif de visualisation
58.
Fuzzer test system for applications in electric power systems
The present disclosure relates to systems and methods to conduct a fuzzer test on a device under test and configured for use in an electric power system. In one embodiment, a system may include a configuration subsystem to receive a parameter of the device under test. A fuzzer subsystem in communication with the configuration subsystem may be configured to conduct a fuzzer test on the device under test. The fuzzer subsystem may include a fuzzer state machine to generate input data to deliver to the device under test, a packet buffer to store input data generated by the fuzzer state machine, and a packet regulator to deliver input data generated by the fuzzer state machine based the parameter. A physical interface in communication with the packet regulator may transmit input data to the device under test based on the parameter.
A DC power supply may use an input supply surge protection circuit that may be robust against positive and negative power surges. DC power may be provided through a first unidirectional circuit component such as a diode or selectively controlled MOSFET coupled in parallel with a transient voltage suppressor or Zener diode. The first unidirectional circuit component may have a first voltage rating and the transient voltage suppressor or Zener diode may have a second voltage rating lower than the first voltage rating. This may allow current to flow backward over the transient voltage suppressor or Zener diode to protect the first unidirectional circuit component from exposure to voltage beyond the first voltage rating in a power surge.
H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
60.
Systems and methods for establishing a secure communication link in an electric power delivery system
A non-transitory computer readable medium includes instructions that, when executed by processing circuitry, are configured to cause the processing circuitry to operate in a recovery mode after initiating a startup operation, transmit a data frame to a device of an electric power delivery system during the recovery mode, the data frame indicating a request for a security association key (SAK), receive the SAK from the device in response to transmitting the data frame, and use the SAK to communicate data via a media access control security (MACsec) communication link.
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 software-defined network (SDN) rule modification counter system provides counters that track all changes and edits to rules at SDN controllers and SDN switches on an SDN. The system compares counters at the SDN controller and SDN switch to determine if they match. If the counters do not match, a change has been made to the rules. With the addition of rule edit statistics the SDN controller will now have visibility that a rule modification was performed. The SDN controller then verifies that the state of the device is the same as its expected state as a secondary integrity check. Based on the rule modification notification, changes to a central rules table at the SDN controller and changes to rule settings at the SDN switch are made according to pre-programmed logic.
A system to reconfigure a motor from induction mode to synchronous mode at a zero crossing of the field voltage during startup using only stator current signals is described herein. The zero crossing may be detected by asymmetry induced in the stator currents by a current asymmetry inducing module of the motor. The current asymmetry inducing module may include a resistor and diode in series and in parallel with a discharge resistor of the field windings. Asymmetry is induced in the current obtained from the stator, and used to determine a zero crossing of the field voltage. Upon the rotor reaching a startup frequency and the detected zero-crossing of the field voltage, the motor may be reconfigured from induction mode to synchronous mode.
H02P 1/46 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur synchrone
H02P 1/50 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur synchrone par passage de la marche en asynchrone à la marche en synchrone
Systems and methods for determining a location of an event in an electric power delivery system using a machine learning engine are provided. The machine learning engine may be trained based on a topology of the electric power delivery system, where the topology may be a layout of line sections and corresponding sensors of the electric power delivery system. Based on the topology, one or more training matrices that indicate possible event locations may be generated. In turn, the machine learning engine may be trained using the training matrices and logistic regression models to determine locations of events that occur during operation of the electric power delivery system.
Current measurement devices for printed circuit board mounting are disclosed herein. The current measurement devices include a hollow and flexible core to improve response to a primary signal and decrease weight. The current measurement device includes a housing with guides to maintain alignment of the core. An electromagnetic shield may be placed between the circumference of the core and the housing. The housing may include apertures to facilitate washing. The current measurement device may include a primary conductor external to the housing.
Systems, methods, and devices are provided for dynamically generating a histogram for viewing via a user interface. Embodiments presented herein provide apparatus and techniques for generating a histogram and adjusting a view of the histogram without the computations being perceived by a user. To do so, histogram indices may be computed for various time intervals (e.g., minutes, hours, days, etc.) of input data. The indices may be used to generate a histogram for a time interval that may be larger than the interval used to compute the histogram indices. At the time period for the histogram displayed via the user interface is changed by the user, a dynamic histogram builder computes an adjusted histogram using histogram indices for the updated and/or changed time period. Embodiments herein provide techniques which reduce the time to compute the histogram and consume less computing resources to do so.
A system includes a processor operatively coupled to memory. The processor performs operations that include obtaining electrical measurements of a power system. The processor determines a scaled energy value of a first set of the electrical measurements that are scaled with respect to a second set of electrical measurements. The processor determines that a potential ringdown event occurred by comparing the scaled energy value to a threshold energy value. The processor determines that the potential ringdown event is a confirmed ringdown event by comparing a scaled error value to a threshold error value. The processor generates one or more mode estimates from the confirmed ringdown event.
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 21/133 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des techniques numériques
67.
Automatically determining the size of a capacitor bank using wireless current sensors (WCS)
The present disclosure relates to a capacitor bank controller that automatically determines the size of a capacitor bank using wireless current sensors. The capacitor bank controller determines a first capacitor bank size estimate using voltage and current measurements from when the capacitor bank is open and when the capacitor bank is closed a first time. The capacitor bank controller determines a second capacitor bank size estimate by using voltage measurements and current measurements from when the capacitor bank is open and when the capacitor bank is closed a second time. The capacitor bank controller determines a filtered capacitor bank size estimate based on the first capacitor bank estimate and the second capacitor bank estimate and controls operation of the capacitor bank based on the filtered capacitor bank size estimate.
G01R 31/3842 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p.ex. état de charge combinant des mesures de tension et de courant
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
68.
Self-configuration of network devices without user settings
A method includes obtaining, via a power system device, a source media access control (SMAC) address. The method includes generating, via the power system device, an Ethernet frame of power system data with a destination media access control (DMAC) address comprising at least a portion of the SMAC address. The method includes sending, via the power system device, the Ethernet frame to an intelligent electronic device (IED) of a power system.
Systems, methods, and devices are provided for determining a maintenance mode of one or more merging units of an electric power delivery system using an intelligent electronic device that may rely on communication from wired (or wireless) electrical measurement devices. The intelligent electronic device may be a line relay. The merging units may provide data to the line relay including at least one bit indicating a maintenance mode of each merging unit. If a maintenance mode bit from a particular merging unit indicates that the merging unit is in the maintenance mode, logic of the line relay may determine if a maintenance mode override is received. If so, the line relay may disregard the maintenance mode bit and process the data from the merging unit. If the logic determines that the merging unit is in the maintenance mode, the line relay may force data from the merging unit to zero.
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
70.
DYNAMIC CAPABILITY REGION FOR ELECTRIC POWER SYSTEM PROTECTION
This disclosure discusses systems, methods, and techniques for producing and utilizing a capability region of one or more monitored equipment. To do so, an intelligent electronic device (IED) may access a data set of one or more known performance characteristics of the monitored equipment. The known performance characteristics are based on, or dependent of, one or more variables. The IED may also access a constraint library with geometric primitives. Then, the IED may analyze the data set and may produce the capability region using the geometric primitive. The IED may compare an operating point of the monitored equipment to the capability region of the monitored equipment. Based on the comparison, the IED may implement a control action.
An autonomous real-time remedial action scheme (RAS) control system may receive electrical measurements of a power system. The RAS control system may determine active power and reactive power of each bus in the power system based on the received electrical measurements. The RAS control system may dynamically determine whether to shed one or more loads, generators, or both in the power system by optimizing an objective function to maintain maximum critical load and maximum critical generation in the electrical system based on the active and reactive power of each bus in the power system and the generation of each generator in the power system. The RAS control system may send a command to trip at least one breaker to cause the at least one breaker to shed the one or more loads, generators, or both. The RAS control system may send a command to runback one or more generators.
G05B 17/02 - Systèmes impliquant l'usage de modèles ou de simulateurs desdits systèmes électriques
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
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
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
An intelligent electronic device (IED) may obtain a voltage measurement matrix based on an arrangement of a transformer in a power system. The TED may obtain a delta connection compensating angle based on the location of the circuit breaker and the transformer arrangement. The IED may obtain voltage measurements of the transformer. The TED may determine a residual flux value of the transformer based at least in part on the voltage measurements, the voltage measurement matrix and the delta connection compensating angle. The TED may send a signal to a circuit breaker of the transformer to connect the transformer to the power system based at least in part on the system voltage and residual flux value.
H02H 7/04 - 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 transformateurs
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
Systems and methods are disclosed to monitor real-time digital data for degradation. In one embodiment, an intelligent electronic device (“IED”) in an electric power system may include an interface to receive a stream of digital data, the stream of digital data comprising a plurality of data frames. A protective action subsystem may monitor the sampled digital data and implement a protective action based on the stream of sampled digital data. A digital data degradation detection subsystem may analyze a plurality of digital metrics associated with the plurality of data frames and make a determination regarding degradation of a communication channel based on whether the plurality of digital metrics fails at least one threshold. In response to the determination, the digital data degradation detection subsystem may implement a response to the determination that the plurality of digital metrics fails at least one threshold.
Output circuit devices for use in electric power systems may include a first output subsystem for transmitting a first signal output via an output port to a component of the electric power system, an input subsystem for receiving and monitoring the first signal output transmitted by the first output subsystem, and a second output subsystem for transmitting another signal output to the component of the electric power system. The second output subsystem is to transmit the signal output in response to an indication from the input subsystem. Intelligent electronic devices (IEDs) and associated methods may include one or more output circuit devices.
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
H02H 7/22 - 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 dispositifs de commutation
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
The present disclosure relates to an ambidextrous hinge. The ambidextrous hinge includes a first knuckle with a first engagement feature, a second knuckle with a second engagement feature, and a third knuckle movably coupled between the first knuckle and the second knuckle. The third knuckle includes a third engagement feature that engages the first engagement feature to cause the ambidextrous hinge to lock in a first open position when used as a first swing hinge. The third knuckle includes a fourth engagement feature that engages the second engagement feature to cause the ambidextrous hinge to lock in a second open position when used as a second swing hinge.
A condition-based monitoring system receives a plurality of measurements from sensors measuring mechanical and electrical aspects of a prime mover and a synchronous machine. The condition-based monitoring system determines a correlation between the mechanical measurements and electrical measurements to estimate parameters of the model. The condition-based monitoring system also updates the model as sensors obtain additional measurements during operation of the prime mover.
Configurable binary circuits for use in electrical power systems may include an input/output port, a binary input subsystem for receiving a binary input signal, a binary output subsystem for transmitting a binary output signal, and a switch subsystem for selecting one of the binary input subsystem or the binary output subsystem for operation. Intelligent electronic devices (IEDs) and associated methods may include one or more configurable binary circuits.
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H01H 47/00 - Circuits autres que ceux appropriés à une application particulière du relais et prévue pour obtenir une caractéristique de fonctionnement donnée ou pour assurer un courant d'excitation donné
78.
Detection of lightning and related control strategies in electric power systems
The present disclosure pertains to systems and methods for detecting lightning and using such information to implement appropriate control strategies in an electric power system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions associated with at least a portion of the electric power system. The system may also include a traveling wave subsystem to identify an initial traveling wave in the electric power system and generated by lightning and identify at least one subsequent traveling wave in the electric power system and generated by lightning. A lightning analysis subsystem may perform an analysis of the initial traveling wave and the at least one subsequent traveling wave to determine a characteristic of the ionosphere based on the analysis and a lightning location. An adaptive control subsystem may adjust a control strategy based on the lightning location.
G01R 29/08 - Mesure des caractéristiques du champ électromagnétique
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
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
79.
Systems and methods for establishing a secure communication link in an electric power distribution system
An intelligent electronic device (IED) of an electric power distribution system includes processing circuitry and a memory that includes a tangible, non-transitory, computer-readable comprising instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to receive operating data associated with the electric power distribution system, determine whether the operating data matches with expected operating data, generate a connectivity association key (CAK) based on the operating data in response to a determination that the operating data matches with the expected operating data, and establishing a connectivity association based on the CAK.
The present disclosure relates to systems and methods of sag in a power line. In an embodiment, a monitoring device may include a distance sensor and an operating parameter sensor. A processor of the monitoring device may acquire, via the distance sensor, a first distance measurement. The processor may acquire, via the operating parameter sensor, a first operating parameter measurement. The processor may provide an output signal indicating that the power line is sagging when a combination of the first distance measurement and the first operating parameter measurement exceed a first combined distance-operating parameter threshold.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
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
G01B 17/00 - Dispositions pour la mesure caractérisées par l'utilisation de vibrations infrasonores, sonores ou ultrasonores
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01P 15/18 - Mesure de l'accélération; Mesure de la décélération; Mesure des chocs, c. à d. d'une variation brusque de l'accélération dans plusieurs dimensions
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
81.
Device level variable role-based access systems, methods, and apparatuses
Embodiments herein include an intelligent electronic device (IED) by employing a multi-factor authentication process. In some embodiments, to change the access level of the IED, the user may use the password and additional inputs such as an off-site operator sending a command, or the user engaging a push button or switch local to the IED.
A test system for an electrical system includes a slot array having a plurality of slots and a plurality of recesses formed therethrough, a plurality of mounts in which each mount of the plurality of mounts is positioned within a respective recess of the plurality of recesses to align with a respective slot of the plurality of slots, a connector port having a plurality of pins, and a plurality of conductors in which each conductor of the plurality of conductors extends from a respective pin of the plurality of pins to a respective mount of the plurality of mounts. Each mount of the plurality of mounts is configured to receive an additional conductor via a corresponding slot of the plurality of slots to electrically couple the additional conductor to a corresponding pin of the plurality of pins via a corresponding conductor of the plurality of conductors.
Distance protection for electric power delivery systems that include an unconventional source is disclosed herein using apparent impedance independent of memory and cross-phase polarizing. The apparent impedance may be compared with an offset distance operating characteristic. Fault direction is determined by using zero-sequence ground directional logic for phase-to-ground faults. For phase-to-phase faults, fault direction is determined using weak-infeed directional logic. Fault direction may further use incremental quantity directional principles. The distance protection may further determine a faulted loop using voltage logic. The distance protection may select between traditional distance protection and the methods described herein based on the current feeding the fault.
An intelligent electronic device (IED) of an electric power distribution system includes processing circuitry and a memory having instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to determine establishment of setup criteria to operate in a passive mode, operate in the passive mode to communicate data without initiation of a media access control security key agreement (MKA) protocol in response to determination of the establishment of the setup criteria, receive activation data during operation in the passive mode, the activation data being indicative that a media access control security (MACsec) communication link is to be established, and operate in an active mode in response to receipt of the activation data to initiate the MKA protocol to establish the MACsec communication link.
H04L 9/32 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
A controller for an electric power distribution system includes processing circuitry and a memory that includes instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to determine that a first switch of the electric power distribution system is a primary switch communicatively coupled to an intelligent electronic device (IED) of the electric power distribution system, determine that a second switch of the electric power distribution system is a backup switch communicatively coupled to the TED, and distribute a first copy of a security association key (SAK) to the first switch and a second copy of the SAK to the second switch in response to determining that the first switch is the primary switch and the second switch is the backup switch to enable the first switch and the second switch to establish respective media access control security (MACsec) communication links with the IED.
An intelligent electronic device (IED) includes memory and a processor operatively coupled to the memory. The processor is configured to establish, over a communication network of a power system, a communication link according to a media access control security (MACsec) Key Agreement (MKA). The TED receives a plurality of access control secure association keys (SAKs) via the communication link. The TED receives one or more checked-out SAKs indicating a request to access the TED The TED allows access based on the one or more checked-out access control SAKs matching at least one of the plurality of access control SAKs.
H04L 9/32 - Dispositions pour les communications secrètes ou protégées; Protocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
Methods and devices are provided for determining the number of open phases and which particular phases may be open in capacitor bank system. Detecting open phases may include determining a neutral current of the capacitor bank system. According to one detection method, in response to a magnitude of the neutral current being greater than a threshold value, an IED may calculate an aggregate power phasor for the phases of the capacitor bank system with respect to each rotation. According to another detection method, in response to the magnitude of the neutral current being greater than a threshold value, an IED may calculate an individual power phasor for each of the phases of the capacitor bank system with respect to each rotation. Based on the magnitude and angles of the power phases, the IED may determine the presence of open phases and which particular phases may be open, respectively.
G01R 19/10 - Mesure d'une somme, d'une différence, ou d'un rapport
G01R 25/00 - Dispositions pour procéder aux mesures de l'angle de phase entre une tension et un courant ou entre des tensions ou des courants
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
88.
Device management in power systems using media access control security (MACsec)
An intelligent electronic device (IED) includes memory and a processor operatively coupled to the memory. The processor is configured to establish, over a communication network of a power system, a connection association (CA) with a receiving device using a MACsec Key Agreement (MKA). The processor is configured to automatically send device management information via the MKA process.
An intelligent electronic device (IED) of an electric power distribution system includes processing circuitry and a memory that includes instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to transmit a first data frame and a second data frame to a switch of the electric power distribution system, determine whether the switch transmits the first data frame and not the second data frame, and establish a media access control security key agreement (MKA) based on a determination of whether the switch transmits the first frame and not the second data frame.
The present disclosure pertains to systems and methods to verify information received from a merging unit. In one embodiment, a system may include a merging unit interface comprising a port configured to communicate with the merging unit. The system may include a commissioning subsystem to receive a unique identifier (“UID”) associated with the merging unit using the port during a commissioning process, to store the UID associated with the merging unit, and to associate the UID with the port. In operation, a verification subsystem may receive a plurality of transmissions from the merging unit and verify that the plurality of transmissions originated from the merging unit based on matching the UID stored in the commissioning process with the UID in the plurality of transmissions, and confirming that the plurality of transmissions is received through the port associated with the UID.
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H02H 7/20 - 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 équipement électronique
91.
Systems and methods for communicating data securely for an electric power delivery system
A system includes a parallel redundancy protocol (PRP) link redundancy entity (LRE) configured to receive data and copy the data to create a first copy of the data and a second copy of the data for transmission and a switch configured to cause operation between a first PRP media access control security (MACsec) mode and a second PRP MACsec mode to encrypt the data. The first PRP MACsec mode includes performing MACsec encryption on the data received by the PRP LRE prior to the data being copied by the PRP LRE, and the second PRP MACsec mode includes performing the MACsec encryption on the first copy of the data and the second copy of the data after the data has been copied by the PRP LRE.
G06F 11/14 - Détection ou correction d'erreur dans les données par redondance dans les opérations, p.ex. en utilisant différentes séquences d'opérations aboutissant au même résultat
G06F 11/20 - Détection ou correction d'erreur dans une donnée par redondance dans le matériel en utilisant un masquage actif du défaut, p.ex. en déconnectant les éléments défaillants ou en insérant des éléments de rechange
G06F 11/18 - Détection ou correction d'erreur dans une donnée par redondance dans le matériel en utilisant un masquage passif du défaut des circuits redondants, p.ex. par logique combinatoire des circuits redondants, par circuits à décision majoritaire
G06F 11/08 - Détection ou correction d'erreur par introduction de redondance dans la représentation des données, p.ex. en utilisant des codes de contrôle
H04L 101/622 - Adresses de couche 2, p.ex. adresses de contrôle d'accès au support [MAC]
A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
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
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
G05B 15/02 - Systèmes commandés par un calculateur électriques
H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
93.
Systems and methods for establishing a secure communication link in an electric power distribution system
An intelligent electronic device (IED) of an electric power distribution system includes processing circuitry and a memory that includes a tangible, non-transitory, computer-readable comprising instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to receive operating data associated with the electric power distribution system, determine whether the operating data matches with expected operating data, generate a connectivity association key (CAK) based on the operating data in response to a determination that the operating data matches with the expected operating data, and establishing a connectivity association based on the CAK.
Systems and methods are described herein to detect an open-phase condition associated with an inverter-based resource for electric power generation within an electric power delivery system. An electric power delivery system may include one or more inverter-based resources that provide three phased electric power to one or more loads of an electric utility. A controller may include circuitry to measure voltage unbalances between different phases, high voltage sequences, phase voltage waveform harmonic distortions, voltage levels, and current levels to dependably detect an open-phase condition of the electric power delivery system.
H02H 7/22 - 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 dispositifs de commutation
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
95.
Automated communication flow discovery and configuration in a software defined network
The present disclosure pertains to systems and methods for automating the configuration of a software defined network (“SDN”). In one embodiment, a system may include a first communication host and a second communication host configured to transmit information to the first communication host. A network may provide communication between the first communication host and the second communication host using a plurality of network devices. An SDN controller in communication with the network may include an approved service subsystem to match the communication with an approved service. The SDN controller may also include an analysis subsystem configured to identify a communication flow corresponding to information transmitted by the second communication host to the first communication host. A traffic routing subsystem of the SDN controller may create the communication flow identified by the analysis subsystem between the second communication host and the first communication host.
The present disclosure pertains to systems and methods to compress an input signal representing a parameter in an electric power system. In one embodiment, a system includes a data acquisition subsystem to receive an input signal comprising a plurality of high-speed representations of electrical conditions. A linear prediction subsystem generates an excitation signal estimate based on the input signal, a plurality of linear prediction coefficients based on the input signal, and an estimated signal based on the excitation signal estimate and the plurality of linear prediction coefficients. An error encoding subsystem may generate an encoding of an error signal based on a difference between the input signal and the estimated signal. A non-transitory computer-readable storage medium may store an encoded and compressed representation of the input signal comprising the excitation signal estimate, the plurality of linear prediction coefficients, and the encoding of the error signal.
H03M 7/00 - Conversion d'un code, dans lequel l'information est représentée par une séquence donnée ou par un nombre de chiffres, en un code dans lequel la même information est représentée par une séquence ou par un nombre de chiffres différents
H03M 7/40 - Conversion en, ou à partir de codes de longueur variable, p.ex. code Shannon-Fano, code Huffman, code Morse
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
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
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
G01R 21/133 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des techniques numériques
G01R 21/00 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance
The present disclosure pertains to systems and methods to share data in a point-to-point system. In one embodiment, a system to share point-to-point information may be used in an electric power system, and the system may include a communication interface to communicate using a point-to-point protocol using at least a first port and a second port. A point-to-point information sharing subsystem may receive an indication that point-to-point information received on the first port is to be shared on the second port and may configure the second port to share point-to-point information received on the first port. In some embodiments, a delay associated with the communication link may be added to the shared point-to-point information prior to transmission.
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
H04L 69/324 - Protocoles de communication intra-couche entre entités paires ou définitions d'unité de données de protocole [PDU] dans la couche liaison de données [couche OSI 2], p.ex. HDLC
98.
Traveling wave overcurrent protection for electric power delivery systems
Protection of an electric power delivery system using a traveling wave overcurrent element is disclosed herein. A maximum traveling wave mode among the alpha and beta modes is selected and compared with a traveling wave overcurrent threshold to determine a traveling wave overcurrent. Traveling wave overcurrent protection may be enabled depending on a termination status of the protected electric power delivery system. When a remote terminal is terminated on high surge impedance, a local protection system may use local traveling wave current quantities to determine a traveling wave overcurrent, and the traveling wave overcurrent may be used for line protection. Systems for detecting a termination status use local and remote current quantities.
H02H 7/22 - 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 dispositifs de commutation
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
99.
Sample time offset alignment of electric power system samples independent of a common time source
Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) using samples and sample time offset from merging units. The merging units do not require access to a common time signal. The IED does not require storage of a communication latency with the merging units. The sample time offset corresponds to a latency between obtaining the sample and receipt of the sample at the IED. The IED aligns samples from various merging units using sample time offset values communicated from the merging units to the IED. The IED performs monitoring and protection functions using the time aligned samples.
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
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 3/16 - 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
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
100.
Adaptive load management based on system capacity in a microgrid environment
System, methods, and techniques for load management in a microgrid are disclosed. A system of load management includes one or more processors configured to receive a time threshold value defining a time period of power demand in a microgrid, determine a battery rating of the microgrid, and trigger load shedding or load restoration in the microgrid based on one or more of the time threshold value and the battery rating. The load shedding includes selecting and shedding a first load in the microgrid for load shedding, thereby removing a measured power consumption of the selected first load from an overall power consumption of the microgrid by the shedding. The load restoration includes selecting and restoring the first load in the microgrid, there by adding the measured power consumption of the selected first load to an overall power consumption of the microgrid by restoration.
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
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
