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：US20170102426A1

公开(公告)日：2017-04-13

申请号：US15292890

申请日：2016-10-13

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Veselin Skendzic ,  Cody W. Tews ,  David E. Whitehead

IPC: G01R31/11

CPC classification number: G01R31/11 ,  G01R31/086

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.

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：US20170063482A1

公开(公告)日：2017-03-02

申请号：US15349526

申请日：2016-11-11

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： David E. Whitehead ,  Shankar V. Achanta ,  Henry Loehner

IPC: H04J3/06 ,  G06F1/14 ,  H03K3/01

CPC classification number: H04J3/0688 ,  G01S19/00 ,  G06F1/14 ,  H02H7/261 ,  H02H7/28 ,  H03K3/01 ,  H04J3/0644

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.

Abstract translation: 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。

公开(公告)号：US09520860B2

公开(公告)日：2016-12-13

申请号：US14057803

申请日：2013-10-18

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： David E. Whitehead ,  Shankar V. Achanta ,  Henry Loehner

IPC: G01S19/20 ,  G01S19/34 ,  H03K3/01 ,  G06F1/14 ,  G01S19/00 ,  H04J3/06 ,  H02H7/26 ,  H02H7/28

CPC classification number: H04J3/0688 ,  G01S19/00 ,  G06F1/14 ,  H02H7/261 ,  H02H7/28 ,  H03K3/01 ,  H04J3/0644

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.

Abstract translation: 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。

公开(公告)号：US20140250972A1

公开(公告)日：2014-09-11

申请号：US14017522

申请日：2013-09-04

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Shankar V. Achanta ,  David E. Whitehead ,  Henry Loehner

IPC: G01S19/13

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.

Abstract translation: 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。

公开(公告)号：US20140100702A1

公开(公告)日：2014-04-10

申请号：US13828976

申请日：2013-03-14

Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.

Inventor： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Gregary C. Zweigle

IPC: G05B13/02

CPC classification number: G05B13/02 ,  H02H7/261 ,  H02J13/0079 ,  Y02E60/724 ,  Y02E60/725 ,  Y04S10/18 ,  Y04S10/20

Abstract: Distributed controllers in an electric power delivery system obtain measurements and equipment status, calculate derived values, and determine IED state, and share such with other distributed controllers and coordination controllers. Distributed controllers and coordination controllers further refine measurements, equipment status, derived values, and IED state. Control of the electric power delivery system is coordinated among the distributed controllers and the coordination controllers.

Abstract translation: 电力输送系统中的分布式控制器可获得测量和设备状态，计算派生值，并确定IED状态，并与其他分布式控制器和协调控制器共享。 分布式控制器和协调控制器进一步完善测量，设备状态，导出值和IED状态。 分布式控制器和协调控制器之间协调控制电力输送系统。