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公开(公告)号：US20170351223A1
公开(公告)日：2017-12-07
申请号：US15683327
申请日：2017-08-22
摘要： Systems and methods for detecting the failure of a precision time source using an independent time source are disclosed. Additionally, detecting the failure of a GNSS based precision time source based on a calculated location of a GNSS receiver is disclosed. Moreover, the system may be further configured to distribute a time derived from the precision time source as a precision time reference to time dependent devices. In the event of a failure of the precision time source, the system may be configured to distribute a time derived from a second precision time source as the precision time signal during a holdover period.
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公开(公告)号：US09813173B2
公开(公告)日：2017-11-07
申请号：US14875453
申请日：2015-10-05
CPC分类号： H04J3/0638 , H04J3/0644 , H04L63/14
摘要： The time signal verification and distribution device disclosed herein verifies and distributes a time signal to consuming devices. The device determines a time quality status of a first and second time signal, calculates a difference between a first and a second time signal, and compares the difference to a predetermined threshold. Based on the time quality status and the comparison, the time signal verification and distribution device distributes a time signal to a plurality of time signal consuming devices. Exceeding the predetermined threshold may indicate a spoofing attack or other problem with the time signals.
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13.发明申请FAULT DETECTION IN ELECTRIC POWER DELIVERY SYSTEMS USING UNDERREACH, DIRECTIONAL, AND TRAVELING WAVE ELEMENTS 审中-公开电力输送系统故障检测使用内部，方向和行驶波浪元件公开(公告)号：US20170012424A1
公开(公告)日：2017-01-12
申请号：US15272116
申请日：2016-09-21
发明人： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Veselin Skendzic , Tony J. Lee , David E. Whitehead
CPC分类号： H02H7/20 , G01R31/08 , G01R31/085 , G01R31/088 , G01R31/2836 , G01R31/40 , G05B9/02 , H02H3/042 , H02H7/265
摘要： The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include a traveling wave differential subsystem configured to determine an operating quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may also determine a restraint quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may detect a traveling wave generated by the fault based on the plurality of representations. A fault detector subsystem may be configured to declare a fault based on a comparison of the operating quantity and the restraint quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
摘要翻译： 本公开涉及用于检测电力输送系统中的故障的系统和方法。 在一个实施例中，系统可以包括被配置为接收电气条件的多个表示的数据采集子系统。 该系统还可以包括配置成基于电气条件的多个表示来确定操作量的行波差分子系统。 行波差分子系统还可以基于电气条件的多个表示来确定约束量。 行波差分子系统可以基于多个表示来检测由故障产生的行波。 故障检测器子系统可以被配置为基于操作量与约束量的比较来声明故障。 保护作用子系统可以基于故障的声明来实施保护动作。
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14.发明授权Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements 有权使用欠联接，定向和行波元件的电力输送系统中的故障检测公开(公告)号：US09470748B2
公开(公告)日：2016-10-18
申请号：US14856350
申请日：2015-09-16
发明人： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Veselin Skendzic , Tony J. Lee , David E. Whitehead
CPC分类号： H02H7/20 , G01R31/08 , G01R31/085 , G01R31/088 , G01R31/2836 , G01R31/40 , G05B9/02 , H02H3/042 , H02H7/265
摘要： The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include a traveling wave differential subsystem configured to determine an operating quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may also determine a restraint quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may detect a traveling wave generated by the fault based on the plurality of representations. A fault detector subsystem may be configured to declare a fault based on a comparison of the operating quantity and the restraint quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
摘要翻译： 本公开涉及用于检测电力输送系统中的故障的系统和方法。 在一个实施例中，系统可以包括被配置为接收电气条件的多个表示的数据采集子系统。 该系统还可以包括配置成基于电气条件的多个表示来确定操作量的行波差分子系统。 行波差分子系统还可以基于电气条件的多个表示来确定约束量。 行波差分子系统可以基于多个表示来检测由故障产生的行波。 故障检测器子系统可以被配置为基于操作量与约束量的比较来声明故障。 保护作用子系统可以基于故障的声明来实施保护动作。
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15.发明申请FAULT DETECTION IN ELECTRIC POWER DELIVERY SYSTEMS USING UNDERREACH, DIRECTIONAL, AND TRAVELING WAVE ELEMENTS 有权电力输送系统故障检测使用内部，方向和行驶波浪元件公开(公告)号：US20160077149A1
公开(公告)日：2016-03-17
申请号：US14856350
申请日：2015-09-16
发明人： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Veselin Skendzic , Tony J. Lee , David E. Whitehead
CPC分类号： H02H7/20 , G01R31/08 , G01R31/085 , G01R31/088 , G01R31/2836 , G01R31/40 , G05B9/02 , H02H3/042 , H02H7/265
摘要： The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include a traveling wave differential subsystem configured to determine an operating quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may also determine a restraint quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may detect a traveling wave generated by the fault based on the plurality of representations. A fault detector subsystem may be configured to declare a fault based on a comparison of the operating quantity and the restraint quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
摘要翻译： 本公开涉及用于检测电力输送系统中的故障的系统和方法。 在一个实施例中，系统可以包括被配置为接收电气条件的多个表示的数据采集子系统。 该系统还可以包括配置成基于电气条件的多个表示来确定操作量的行波差分子系统。 行波差分子系统还可以基于电气条件的多个表示来确定约束量。 行波差分子系统可以基于多个表示来检测由故障产生的行波。 故障检测器子系统可以被配置为基于操作量与约束量的比较来声明故障。 保护作用子系统可以基于故障的声明来实施保护动作。
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公开(公告)号：US20140247185A1
公开(公告)日：2014-09-04
申请号：US14053347
申请日：2013-10-14
IPC分类号： G01S19/20
摘要： Disclosed herein is a system for detecting manipulation of a GNSS signal and mitigating against such manipulation. A GNSS receiver receives GNSS signals from a plurality of GNSS satellites, and calculates event times for each GNSS satellite. The GNSS receiver then compares a next event time for a particular GNSS satellite with an expected next event time for the particular GNSS satellite. If the difference between the expected next event time and the next event times exceeds a predetermined threshold, then the GNSS receiver indicates that signal integrity may be compromised.
摘要翻译： 本文公开了一种用于检测GNSS信号的操纵并减轻这种操纵的系统。 GNSS接收器从多个GNSS卫星接收GNSS信号，并且计算每个GNSS卫星的事件时间。 然后，GNSS接收机将特定GNSS卫星的下一个事件时间与特定GNSS卫星的预期下一个事件时间进行比较。 如果预期下一个事件时间和下一个事件时间之间的差异超过预定阈值，则GNSS接收器指示信号完整性可能受到损害。
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公开(公告)号：US20140114608A1
公开(公告)日：2014-04-24
申请号：US14056170
申请日：2013-10-17
IPC分类号： G04F10/10
摘要： Systems and methods for detecting the failure of a precision time source using an independent time source are disclosed. Additionally, detecting the failure of a GNSS based precision time source based on a calculated location of a GNSS receiver is disclosed. Moreover, the system may be further configured to distribute a time derived from the precision time source as a precision time reference to time dependent devices. In the event of a failure of the precision time source, the system may be configured to distribute a time derived from a second precision time source as the precision time signal during a holdover period.
摘要翻译： 公开了使用独立时间源检测精密时间源故障的系统和方法。 另外，公开了基于GNSS接收机的计算位置来检测基于GNSS的精确时间源的故障。 此外，该系统还可以被配置为将从精度时间源导出的时间作为时间相关设备的精确时间基准分配。 在精度时间源发生故障的情况下，系统可以被配置为在保持期内将从第二精度时间源导出的时间分配为精度时间信号。
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公开(公告)号：US11115311B1
公开(公告)日：2021-09-07
申请号：US16876259
申请日：2020-05-18
发明人： Edmund O. Schweitzer, III , David E. Whitehead , Tony J. Lee , Lisa Gayle Nelms , Austin Edward Wade , Krishnanjan Gubba Ravikumar
IPC分类号： H04L12/26
摘要： The present disclosure relates to systems and methods for creating a data tunnel to communicate test data in a test configuration in an electric power system. In one embodiment, a remote unit may include a monitored equipment interface to receive information representative of a condition in the electric power system from a test set and a first test data port to communicate test data through the data tunnel in the test configuration. The remote unit may use a first communication subsystem to generate and transmit a stream of data packets comprising information from the monitored equipment interface and information from the first test data port to be routed through the data tunnel. A protection system may receive the stream of data packets from the first communication subsystem and separate information from the monitored equipment interface and information from the test data routed through the data tunnel.
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公开(公告)号：US11114892B2
公开(公告)日：2021-09-07
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：US11056082B1
公开(公告)日：2021-07-06
申请号：US17035979
申请日：2020-09-29
发明人： Edmund O. Schweitzer, III , David E. Whitehead , David J. Casebolt , Krishnanjan Gubba Ravikumar , Austin Edward Wade
摘要： The present disclosure pertains to systems and methods for generating a waterfall display to display a stream of high-speed data measurements. In one embodiment, a system may comprise a communication subsystem to receive a stream of high-speed data measurements. A waterfall generation subsystem may receive the stream of high-speed data measurements from the communication subsystem and identify a plurality of changes in the stream of high-speed data. A subset of data measurements may be selected that includes changes in the high-speed data. The changes may be highlighted through a plurality of modifications. A representation of the subset of data measurements in which changes are highlighted may be generated and presented at a rate below a perception threshold of a human operator. A waterfall display subsystem may generate a human-perceptible waterfall display to represent the stream of high-speed data measurements and the plurality of modifications.
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