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公开(公告)号：US11467197B2
公开(公告)日：2022-10-11
申请号：US17308138
申请日：2021-05-05
IPC分类号： G01R21/06 , G06Q50/06 , G01R21/133
摘要： Electric power system voltage control and voltage stability may be calculated using energy packets. Sets of negative energy packet sets normalized by a set of positive and negative energy packet sets may be used for voltage control by adding or removing capacitive units. Energy packet voltage indicators may be calculated using energy packets, and used to determine voltage stability. Control actions may be taken depending on the determined voltage stability.
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公开(公告)号：US11165238B2
公开(公告)日：2021-11-02
申请号：US16788408
申请日：2020-02-12
发明人： Edmund O. Schweitzer, III , David E. Whitehead , David J. Casebolt , Krishnanjan Gubba Ravikumar , Austin Edward Wade , Lisa Gayle Nelms , Brian R. Clark
摘要： The present disclosure pertains to systems and methods for monitoring electrical arc events in an electric power system. In one embodiment, a system may comprise an arc flash detection (AFD) unit to detect electromagnetic radiation generated by an electrical arc event, a primary protection relay to generate measurements of an electric current, and an integrator. In various embodiments, the integrator may comprise a communication port to receive the detection of the electrical arc event and the measurements of the electric current. The integrator may also comprise a processing subsystem to validate the detection of the electrical arc and generate protective actions to interrupt the flow of the current to the electrical arc event.
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公开(公告)号：US11137436B2
公开(公告)日：2021-10-05
申请号：US16137350
申请日：2018-09-20
摘要： The present disclosure pertains to systems and methods for monitoring traveling waves in an electric power system. In various embodiments, a data acquisition subsystem may acquire electric power system signals. A traveling wave detection subsystem may detect two or more traveling waves based on the electric power system signals and determine a location of an event triggering the traveling waves. A traveling wave security subsystem may selectively generate a restraining signal based on the location of the event as within a blocking zone. A protection action subsystem may implement a protective action when the location is outside of a blocking zone. In various embodiments, a protective action will not be implemented for traveling waves launched from known locations of switching devices operating normally. Further, protective actions may be restrained if a magnitude of a traveling wave differs from an expected value based on a pre-fault voltage.
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公开(公告)号：US11038336B1
公开(公告)日：2021-06-15
申请号：US17170073
申请日：2021-02-08
发明人： Edmund O. Schweitzer, III , David E. Whitehead , David J. Casebolt , Krishnanjan Gubba Ravikumar , Sean D. Robertson , Austin Edward Wade , Bruce A. Hall
摘要： Disclosed herein are systems for maintaining protection of electric power delivery systems in the event of a control power failure or other anomaly. A reliable power module conditions electric power from multiple independent sources and provides electrical operational power to electric power delivery system protective loads. The reliable power module includes an energy storage device for providing operational power even upon loss of all control power sources. The energy storage may be sufficient to ride through expected losses such as a time to start up backup generation. The energy storage may be sufficient to power a trip coil. Thus, electric power system protection is maintained even upon loss of control power. A discharge circuit is provided to allow an operator to de-energize an energy storage device.
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公开(公告)号：US20210167590A1
公开(公告)日：2021-06-03
申请号：US17170073
申请日：2021-02-08
发明人： Edmund O. Schweitzer, III , David E. Whitehead , David J. Casebolt , Krishnanjan Gubba Ravikumar , Sean D. Robertson , Austin Edward Wade , Bruce A. Hall
摘要： Disclosed herein are systems for maintaining protection of electric power delivery systems in the event of a control power failure or other anomaly. A reliable power module conditions electric power from multiple independent sources and provides electrical operational power to electric power delivery system protective loads. The reliable power module includes an energy storage device for providing operational power even upon loss of all control power sources. The energy storage may be sufficient to ride through expected losses such as a time to start up backup generation. The energy storage may be sufficient to power a trip coil. Thus, electric power system protection is maintained even upon loss of control power. A discharge circuit is provided to allow an operator to de-energize an energy storage device.
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公开(公告)号：US11012016B2
公开(公告)日：2021-05-18
申请号：US17066982
申请日：2020-10-09
IPC分类号： H02P9/42 , H02P9/10 , H03H17/02 , F02D9/00 , H02P9/04 , F02D31/00 , F02D41/00 , F02M21/00 , F02D39/00 , F02P1/00
摘要： 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 and convert the energy packets into a fuel valve reference. Further, a frequency control may receive system feedback associated with the monitored machine and generate a frequency correction based on the system feedback. The controller may add the energy packet value and the frequency correction to determine a prime mover power reference and provide the prime mover power reference to a fuel valve control of the machine.
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公开(公告)号：US20210111586A1
公开(公告)日：2021-04-15
申请号：US17034128
申请日：2020-09-28
发明人： Edmund O. Schweitzer, III , Daqing Hou , David E. Whitehead , Tony J. Lee , Krishnanjan Gubba Ravikumar
IPC分类号： H02J13/00
摘要： Systems and methods including improving availability of protection of an electric power delivery system even upon unavailability of power system signals. Such protection relays may provide protection using signals from the power system and provide the signals to an integrator or another device. Upon unavailability of power system signals to a protection relay, the integrator sends substitute power system signals may be provided to the protection relay. The protection relay may continue to provide protection using the substitute power system signals.
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公开(公告)号：US20210111555A1
公开(公告)日：2021-04-15
申请号：US17034142
申请日：2020-09-28
摘要： Primary protection relays and an integrator disclosed for providing primary protection and secondary applications for an electric power delivery system. The primary protection relays obtain signals from, and provide primary protection operations for the power system, and may operate independently from the integrator. An integrator receives signals and status communications from the primary protection relays to perform secondary applications for the electric power delivery system. The secondary applications may include backup protection, system protection, interconnected protection, and automation functions.
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公开(公告)号：US20210057901A1
公开(公告)日：2021-02-25
申请号：US16831128
申请日：2020-03-26
发明人： Edmund O. Schweitzer, III , David E. Whitehead , Krishnanjan Gubba Ravikumar , Austin Edward Wade
摘要： Systems and methods for facilitating selected communications among primary protection relays using a supervisory system with a configurable input/output (IO) map. Primary protection relays may obtain signals from equipment associated with an electric power delivery system and provide primary protection without need for communication. The primary protection relays may communicate a unique identifier as well as signal values, states, and commands to the supervisory system. The supervisory system may route specifically identified communications among primary protection relays in accordance with a configurable IO map by transmitting selected portions of the communications on a port associated with the receiving primary protection relay. The primary protection relays may perform secondary protection and other operations using the communicated information.
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10.发明授权公开(公告)号：US10375108B2
公开(公告)日：2019-08-06
申请号：US15394097
申请日：2016-12-29
摘要： This disclosure relates to detecting manipulation or spoofing of a time based on a latency of a communication system. In one embodiment, a system includes a time input to receive a time signal. The system includes a first interface to receive a first representation of a first condition at a first location at a first time and a second interface to receive a second representation of a second condition at a second location and at the first time. A latency determination subsystem may determine a latency based on a comparison of the time of arrival of the second measurement and the first time. A threshold subsystem may generate an indication of whether the latency satisfies a threshold. An anomalous condition subsystem may identify an anomalous condition based on the indication, and a remedial action may be implemented based on the anomalous condition.
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