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公开(公告)号：US20210109164A1
公开(公告)日：2021-04-15
申请号：US16796563
申请日：2020-02-20
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Tony J. Lee , David E. Whitehead , David J. Casebolt , Krishnanjan Gubba Ravikumar , Austin Edward Wade , Lisa Gayle Nelms
IPC: G01R31/62 , H02H7/04 , H01F27/40 , G01R31/327
Abstract: The present disclosure pertains to devices, systems, and methods for monitoring an electric power system. In one embodiment, a system may detect a failure in an electric power system. The system may include a communication interface to receive a first indication related to a condition in the electric power system, and a second indication related to the condition. The system may also include a test subsystem to compare the first indication to the second indication and to determine a discrepancy between the first indication and the second indication. A diagnostic subsystem may identify the failure based on the discrepancy between the first indication and the second indication. An alert subsystem may generate an alert based on the failure.
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公开(公告)号：US10951057B1
公开(公告)日：2021-03-16
申请号：US16796567
申请日：2020-02-20
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Tony J. Lee , David J. Casebolt , Krishnanjan Gubba Ravikumar , Austin Edward Wade , Bruce A. Hall , Kelsey M. Loughlin , Sean D. Robertson
Abstract: 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 a power storage device for providing operational power even upon loss of all control power sources. The power storage may be sufficient to ride through expected losses such as a time to start up backup generation. The power storage may be sufficient to power a trip coil. Thus, electric power system protection is maintained even upon loss of control power.
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23.发明申请公开(公告)号：US20200350760A1
公开(公告)日：2020-11-05
申请号：US16932240
申请日：2020-07-17
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Veselin Skendzic , David E. Whitehead
Abstract: The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include an incremental quantities subsystem configured to calculate an incremental current quantity and an incremental voltage quantity based on the plurality of representations. A fault detection subsystem may be configured to determine a fault type based on the incremental current quantity and the incremental voltage quantity, to select an applicable loop quantity, and to declare a fault based on the applicable loop quantity, the incremental voltage quantity, and the incremental current quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
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公开(公告)号：US10656198B2
公开(公告)日：2020-05-19
申请号：US16233211
申请日：2018-12-27
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Veselin Skendzic , Cody W. Tews , David E. Whitehead
Abstract: A system for monitoring an electric power delivery system by obtaining high-frequency electric power system measurements and displaying event information is disclosed herein. The system may use the high-frequency electric power system information to detect traveling waves. The system may generate a display showing fault location on the electric power system, and timing of traveling waves received at locations on the electric power system. The display may include time on one axis and location on another axis. The display may include a waterfall display.
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公开(公告)号：US10310005B2
公开(公告)日：2019-06-04
申请号：US15994817
申请日：2018-05-31
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , David E. Whitehead , Bogdan Z. Kasztenny , Armando Guzman-Casillas , Veselin Skendzic
Abstract: The present disclosure relates to detection of faults in an electric power system. In one embodiment, an incremental quantities subsystem may be configured to calculate a plurality of values of an operating quantity based on the plurality of time-domain representations of electrical conditions. The incremental quantities subsystem may also calculate a plurality of values of a restraining quantity based on the plurality of time-domain representations of electrical conditions. An interval during which the calculated operating quantity exceeds the calculated restraining quantity may be determined. A fault detector subsystem may be configured to declare a fault based on the calculated operating quantity exceeding the calculated restraining quantity by a security margin. A protective action subsystem configured to implement a protective action based on the declaration of the fault.
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Patent Agency Ranking
公开(公告)号：US20180034258A1
公开(公告)日：2018-02-01
申请号：US15644355
申请日：2017-07-07
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Bodgan Z. Kasztenny , David E. Whitehead
CPC classification number: H02H1/0007 , H02H3/083 , H02H3/20 , H02H3/38 , H02H7/265
Abstract: An electric power delivery system may be protected upon occurrence of a fault condition by the systems and methods disclosed herein by detecting the fault condition and signaling a protective action before the overcurrent condition reaches the protective equipment. The protective action may be an opening of a circuit breaker or engagement of a fault current limiter. The overcurrent condition may be a non-steady-state condition. The fault may be detected using traveling wave or incremental quantity techniques.
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公开(公告)号：US09709680B2
公开(公告)日：2017-07-18
申请号：US14017522
申请日：2013-09-04
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Shankar V. Achanta , David E. Whitehead , Henry Loehner
CPC classification number: G01S19/13 , G01S19/03 , G01S19/215 , H04J3/0688
Abstract: 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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28.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：US20160077150A1
公开(公告)日：2016-03-17
申请号：US14856353
申请日：2015-09-16
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Veselin Skendzic , David E. Whitehead
CPC classification number: H02H7/20 , G01R31/08 , G01R31/085 , G01R31/088 , G01R31/2836 , G01R31/40 , G05B9/02 , H02H3/042 , H02H7/265
Abstract: The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include an incremental quantities subsystem configured to calculate an incremental current quantity and an incremental voltage quantity based on the plurality of representations. A fault detection subsystem may be configured to determine a fault type based on the incremental current quantity and the incremental voltage quantity, to select an applicable loop quantity, and to declare a fault based on the applicable loop quantity, the incremental voltage quantity, and the incremental current quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
Abstract translation: 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。 系统还可以包括被配置为基于多个表示来计算增量电流量和增量电压量的增量数量子系统。 故障检测子系统可以被配置为基于增量电流量和增量电压量来确定故障类型，选择适用的回路数量，并根据适用的回路量，增量电压量和 增量电流量。 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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29.发明申请公开(公告)号：US20150081234A1
公开(公告)日：2015-03-19
申请号：US14486929
申请日：2014-09-15
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Veselin Skendzic , Bogdan Z. Kasztenny , David E. Whitehead
CPC classification number: G01R31/088 , G01R31/11
Abstract: Fault location using traveling waves in an electric power delivery system according to the embodiments herein uses line parameters that are adjusted using traveling wave reflections from known discontinuities in the electric power delivery system. The arrival times of a traveling wave and a reflection of the traveling wave from a known discontinuity may be used to adjust parameters of the electric power delivery system such as, for example, line length. The adjusted parameter can then be used to more accurately calculate the location of the fault using the traveling waves.
Abstract translation: 根据本文实施例的在电力输送系统中使用行波的故障定位使用使用来自电力输送系统中的已知不连续性的行波反射来调整的线路参数。 可以使用行波的到达时间和来自已知不连续性的行波的反射来调整电力输送系统的参数，例如线路长度。 然后可以使用经调整的参数来更精确地计算使用行波的故障位置。
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公开(公告)号：US11513143B2
公开(公告)日：2022-11-29
申请号：US17397501
申请日：2021-08-09
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Krishnanjan Gubba Ravikumar , Austin Edward Wade
Abstract: Systems and methods to test an electric power delivery system include a communication subsystem to transmit test signals to one or more merging units, a test subsystem to transmit a test data stream to the one or more merging units via the communication subsystem, and a processor subsystem to receive looped back data from the one or more merging unit in response to the transmitted test data stream and to determine an operating condition based on the looped back data.
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