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公开(公告)号：US20180316175A1
公开(公告)日：2018-11-01
申请号：US15968559
申请日：2018-05-01
摘要： A system for determining a disturbance in an electrical power delivery system external to a distributed site based on rate of change of frequency and power flow at the distributed site. The system may open a breaker to isolate the distributed site from the electric power delivery system upon detection of a disturbance external to the distributed site.
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2.发明申请公开(公告)号：US20170108542A1
公开(公告)日：2017-04-20
申请号：US15393618
申请日：2016-12-29
IPC分类号： G01R31/02
摘要： The present application discloses systems and methods to determine loss of at least one electric power transmission line in an electric power transmission system. In various embodiments, a system consistent with the present disclosure may include an electrical parameter monitoring subsystem configured to receive electrical parameter measurements and to determine a change of the electrical measurements. An analysis subsystem may determine whether a change in the electrical measurements is indicative of loss of at least one transmission line and may calculate a number of transmission lines lost based on the change. In some embodiments, a remedial action subsystem may be configured to implement a remedial action in response to loss of at least one transmission line. The number of transmission lines lost may be determined based on an angle difference ratio and a power ratio between two buses in electrical transmission system.
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公开(公告)号：US20210126454A1
公开(公告)日：2021-04-29
申请号：US16661189
申请日：2019-10-23
发明人： Ashish Upreti
摘要： Systems and methods may be used to determine whether waveforms of at least two transmission lines are synchronous. More particularly, this disclosure relates to sensing operations that use signals received by a local relay and a remote relay to determine whether two waveforms on opposing ends (e.g., supply side and load side, local side and remote side) of a transmission line are synchronous with one another. A system may determine whether a first waveform is synchronous with a second waveform based at least in part on a comparison of delay between a representation of the first waveform and a representation of the second waveform. The system may actuate a device (e.g., close a circuit breaker) in response to determining the first waveform is synchronous with the second waveform.
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4.发明授权公开(公告)号：US09568516B2
公开(公告)日：2017-02-14
申请号：US14493631
申请日：2014-09-23
CPC分类号： G01R31/021 , G01R19/0092 , G01R19/2513 , G01R21/00 , G01R31/026 , H02H3/253
摘要： The present application discloses systems and methods to determine loss of at least one electric power transmission line in an electric power transmission system. In various embodiments, a system consistent with the present disclosure may include an electrical parameter monitoring subsystem configured to receive electrical parameter measurements and to determine a change of the electrical measurements. An analysis subsystem may determine whether a change in the electrical measurements is indicative of loss of at least one transmission line and may calculate a number of transmission lines lost based on the change. In some embodiments, a remedial action subsystem may be configured to implement a remedial action in response to loss of at least one transmission line. The number of transmission lines lost may be determined based on an angle difference ratio and a power ratio between two buses in electrical transmission system.
摘要翻译： 本申请公开了确定电力传输系统中的至少一个电力输电线路的损耗的系统和方法。 在各种实施例中，与本公开一致的系统可以包括被配置为接收电参数测量并确定电测量的变化的电参数监视子系统。 分析子系统可以确定电测量中的变化是否表示至少一条传输线路的损耗，并且可以基于该变化来计算丢失的传输线路的数量。 在一些实施例中，补救动作子系统可以被配置为响应于至少一个传输线的丢失来实施补救动作。 可以基于电力传输系统中的两个总线之间的角度差和功率比确定损失的传输线的数量。
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公开(公告)号：US12126172B2
公开(公告)日：2024-10-22
申请号：US17411274
申请日：2021-08-25
摘要： 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.
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公开(公告)号：US10992133B1
公开(公告)日：2021-04-27
申请号：US16661189
申请日：2019-10-23
发明人： Ashish Upreti
摘要： Systems and methods may be used to determine whether waveforms of at least two transmission lines are synchronous. More particularly, this disclosure relates to sensing operations that use signals received by a local relay and a remote relay to determine whether two waveforms on opposing ends (e.g., supply side and load side, local side and remote side) of a transmission line are synchronous with one another. A system may determine whether a first waveform is synchronous with a second waveform based at least in part on a comparison of delay between a representation of the first waveform and a representation of the second waveform. The system may actuate a device (e.g., close a circuit breaker) in response to determining the first waveform is synchronous with the second waveform.
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公开(公告)号：US20230061694A1
公开(公告)日：2023-03-02
申请号：US17411274
申请日：2021-08-25
摘要： 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.
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8.发明授权公开(公告)号：US10739414B2
公开(公告)日：2020-08-11
申请号：US15393618
申请日：2016-12-29
IPC分类号： G01R31/02 , G01R31/58 , G01R21/00 , G01R19/00 , H02H3/253 , H02J13/00 , G01R31/50 , G01R19/25
摘要： The present application discloses systems and methods to determine loss of at least one electric power transmission line in an electric power transmission system. In various embodiments, a system consistent with the present disclosure may include an electrical parameter monitoring subsystem configured to receive electrical parameter measurements and to determine a change of the electrical measurements. An analysis subsystem may determine whether a change in the electrical measurements is indicative of loss of at least one transmission line and may calculate a number of transmission lines lost based on the change. In some embodiments, a remedial action subsystem may be configured to implement a remedial action in response to loss of at least one transmission line. The number of transmission lines lost may be determined based on an angle difference ratio and a power ratio between two buses in electrical transmission system.
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9.发明申请公开(公告)号：US20160084893A1
公开(公告)日：2016-03-24
申请号：US14493631
申请日：2014-09-23
CPC分类号： G01R31/021 , G01R19/0092 , G01R19/2513 , G01R21/00 , G01R31/026 , H02H3/253
摘要： The present application discloses systems and methods to determine loss of at least one electric power transmission line in an electric power transmission system. In various embodiments, a system consistent with the present disclosure may include an electrical parameter monitoring subsystem configured to receive electrical parameter measurements and to determine a change of the electrical measurements. An analysis subsystem may determine whether a change in the electrical measurements is indicative of loss of at least one transmission line and may calculate a number of transmission lines lost based on the change. In some embodiments, a remedial action subsystem may be configured to implement a remedial action in response to loss of at least one transmission line. The number of transmission lines lost may be determined based on an angle difference ratio and a power ratio between two buses in electrical transmission system.
摘要翻译： 本申请公开了确定电力传输系统中的至少一个电力输电线路的损耗的系统和方法。 在各种实施例中，与本公开一致的系统可以包括被配置为接收电参数测量并确定电测量的变化的电参数监视子系统。 分析子系统可以确定电测量中的变化是否表示至少一条传输线路的损耗，并且可以基于该变化来计算丢失的传输线路的数量。 在一些实施例中，补救动作子系统可以被配置为响应于至少一个传输线的丢失来实施补救动作。 可以基于电力传输系统中的两个总线之间的角度差和功率比确定损失的传输线的数量。
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