公开(公告)号：US20170146613A1

公开(公告)日：2017-05-25

申请号：US15422965

申请日：2017-02-02

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Mangapathirao Venkata Mynam ,  Armando Guzman-Casillas ,  Bogdan Z. Kasztenny ,  Veselin Skendzic ,  David E. Whitehead

IPC: G01R31/40 ,  G05B9/02

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.

公开(公告)号：US20170131343A1

公开(公告)日：2017-05-11

申请号：US15413004

申请日：2017-01-23

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Mangapathirao Venkata Mynam ,  Armando Guzman-Casillas

IPC: G01R31/08 ,  H02H1/00 ,  G01R31/11

CPC classification number: G01R31/088 ,  G01R13/02 ,  G01R31/08 ,  G01R31/085 ,  G01R31/11 ,  H02H1/003 ,  H02H1/0092 ,  H02H7/265 ,  Y04S10/522

Abstract: The present disclosure relates to calculating a fault location in an electric power transmission system based on traveling waves. In one embodiment, a system consistent with the present disclosure may be configured to detect a fault in an electric power transmission system. The system may include a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line and a fault location estimation subsystem. The fault location estimation subsystem may receive from the traveling wave detection subsystem a first plurality of traveling waves on the transmission line generated during a reference event. The fault location estimation subsystem may receive from the traveling wave detection subsystem a second plurality of traveling waves generated during an unplanned event. An unmatched traveling wave in the second plurality of waves may be detected and a location of the unplanned event based on the unmatched traveling wave.

公开(公告)号：US09627881B2

公开(公告)日：2017-04-18

申请号：US15272116

申请日：2016-09-21

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Mangapathirao Venkata Mynam ,  Armando Guzman-Casillas ,  Bogdan Z. Kasztenny ,  Veselin Skendzic ,  Tony J. Lee ,  David E. Whitehead

IPC: G01R31/08 ,  H02H7/20

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, 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.

公开(公告)号：US09594112B2

公开(公告)日：2017-03-14

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

IPC: H02H3/00 ,  G01R31/28 ,  G01R31/08 ,  G05B9/02 ,  H02H3/04 ,  H02H7/26

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。

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

IPC: H02H7/20 ,  G01R31/28 ,  G01R31/08 ,  G05B9/02 ,  H02H7/26 ,  H02H3/04 ,  G01R31/40

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.

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

IPC: G01R31/08 ,  G01R31/11 ,  H02H3/08 ,  H02H7/26 ,  H02H1/00

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.

公开(公告)号：US10302690B2

公开(公告)日：2019-05-28

申请号：US15884707

申请日：2018-01-31

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Armando Guzman-Casillas ,  Bogdan Z. Kasztenny ,  Yajian Tong ,  Mangapathirao Venkata Mynam

IPC: G01R31/08 ,  G01R31/11

Abstract: Traveling wave information from a single end of an electric power delivery system is used to determine a fault location on a power line of the electric power delivery system. Hypotheses of which of a plurality of received traveling waves represents a first reflection from the fault are evaluated. A determination of an arrival time of the first reflection from the fault is used to calculate a distance from the single end of the power line to the fault location.

公开(公告)号：US20180196100A1

公开(公告)日：2018-07-12

申请号：US15884707

申请日：2018-01-31

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Armando Guzman-Casillas ,  Bogdan Z. Kasztenny ,  Yajian Tong ,  Mangapathirao Venkata Mynam

IPC: G01R31/08

CPC classification number: G01R31/085 ,  G01R31/11

Abstract: Traveling wave information from a single end of an electric power delivery system is used to determine a fault location on a power line of the electric power delivery system. Hypotheses of which of a plurality of received traveling waves represents a first reflection from the fault are evaluated. A determination of an arrival time of the first reflection from the fault is used to calculate a distance from the single end of the power line to the fault location.

公开(公告)号：US20180136269A1

公开(公告)日：2018-05-17

申请号：US15806959

申请日：2017-11-08

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Armando Guzman-Casillas ,  Bogdan Z. Kasztenny ,  Yajian Tong ,  Mangapathirao Venkata Mynam

IPC: G01R31/08

CPC classification number: G01R31/085 ,  G01R31/11

Abstract: Traveling wave information from a single end of an electric power delivery system is used to determine a fault location on a power line of the electric power delivery system. Hypotheses of which of a plurality of received traveling waves represents a first reflection from the fault are evaluated. A determination of an arrival time of the first reflection from the fault is used to calculate a distance from the single end of the power line to the fault location.

公开(公告)号：US09588168B2

公开(公告)日：2017-03-07

申请号：US14603540

申请日：2015-01-23

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Mangapathirao Venkata Mynam ,  Armando Guzman-Casillas

IPC: G01R31/08 ,  G01R31/11 ,  H02H3/247 ,  H02H7/26 ,  G01R13/02 ,  H02H1/00

CPC classification number: G01R31/088 ,  G01R13/02 ,  G01R31/08 ,  G01R31/085 ,  G01R31/11 ,  H02H1/003 ,  H02H1/0092 ,  H02H7/265 ,  Y04S10/522

Abstract: The present disclosure relates to calculating a fault location in an electric power transmission system based on traveling waves. In one embodiment, a system consistent with the present disclosure may be configured to detect a fault in an electric power transmission system. The system may include a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line and a fault location estimation subsystem. The fault location estimation subsystem may receive from the traveling wave detection subsystem a first plurality of traveling waves on the transmission line generated during a reference event. The fault location estimation subsystem may receive from the traveling wave detection subsystem a second plurality of traveling waves generated during an unplanned event. An unmatched traveling wave in the second plurality of waves may be detected and a location of the unplanned event based on the unmatched traveling wave.

Abstract translation: 本公开涉及基于行波计算电力传输系统中的故障定位。 在一个实施例中，与本公开一致的系统可以被配置为检测电力传输系统中的故障。 该系统可以包括：行波检测子系统，被配置为检测和测量传输线上的行波和故障位置估计子系统。 故障位置估计子系统可以从行波检测子系统接收在参考事件期间生成的传输线上的第一多个行波。 故障位置估计子系统可以从行波检测子系统接收在计划外事件期间产生的第二多个行波。 可以检测第二多个波中的不匹配的行波，并且基于不匹配的行波来检测非计划外事件的位置。