公开(公告)号：US20160216310A1

公开(公告)日：2016-07-28

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 ,  G01R13/02

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。

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

IPC: G01R31/28 ,  G01R31/08 ,  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.

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：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

IPC: G01R31/08 ,  G01R31/11

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。

公开(公告)号：US20140351572A1

公开(公告)日：2014-11-27

申请号：US14278195

申请日：2014-05-15

Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.

Inventor： Mangapathirao Venkata Mynam ,  Armando Guzman-Casillas

IPC: G06F1/32 ,  G06F9/445

CPC classification number: G06F1/3234 ,  G01R31/08 ,  G06F9/44505 ,  H02H1/0061 ,  H02H3/006 ,  H02J3/00 ,  Y02D10/43

Abstract: Disclosed herein are intelligent electronic devices configured for monitoring an electric power delivery system and for determining a plurality of configuration settings based on measurements from the electric power delivery system. An IED may identify a configuration event, obtain a plurality of electrical parameters associated with the configuration event, determine a plurality of configuration parameters from the electrical parameters, determine a plurality of configuration settings based on the configuration parameters, and apply the settings to the IED. The IED may also be configured to initiate the configuration event by opening a single pole of a multi-phase power line.

Abstract translation: 这里公开了配置用于监视电力输送系统并且基于来自电力输送系统的测量来确定多个配置设置的智能电子设备。 IED可以识别配置事件，获得与配置事件相关联的多个电参数，从电参数确定多个配置参数，基于配置参数确定多个配置设置，并将设置应用于IED 。 IED还可以被配置为通过打开多相电力线的单极来启动配置事件。

公开(公告)号：US20140104738A1

公开(公告)日：2014-04-17

申请号：US14052449

申请日：2013-10-11

Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.

Inventor： Edmund O. Schweitzer, III ,  Mangapathirao Venkata Mynam ,  Daqing Hou

IPC: H02H3/08

CPC classification number: H02H3/08 ,  H02H3/52 ,  H02H7/261

Abstract: Systems and methods are presented for detecting high-impedance faults (HIFs) in an electric power delivery system using a plurality of coordinated high-impedance fault detection systems. In certain embodiments, a method for HIFs may include receiving first and second current representations associated with first and second locations of the electric power delivery system respectively. Based on at least one of the first and second current representations, the occurrence of an HIF may be determined. A relative location of the HIF may be determined based on a relative amount of interharmonic content associated with an HIF included in the first and second current representations, and a protective action may be taken based on the determined relative location.

Abstract translation: 提出了用于检测使用多个协调的高阻抗故障检测系统的电力输送系统中的高阻抗故障（HIF）的系统和方法。 在某些实施例中，用于HIF的方法可以包括分别接收与电力输送系统的第一和第二位置相关联的第一和第二电流表示。 基于第一和第二电流表示中的至少一个，可以确定HIF的发生。 可以基于与包括在第一和第二当前表示中的HIF相关联的间谐波内容的相对量来确定HIF的相对位置，并且可以基于所确定的相对位置来采取保护动作。

公开(公告)号：US08655609B2

公开(公告)日：2014-02-18

申请号：US13651146

申请日：2012-10-12

Applicant: Schweitzer Engineering Laboratories, Inc.

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

IPC: G01R13/06 ,  G01R13/02 ,  G01R13/04 ,  G01R13/08

CPC classification number: G01R31/088 ,  G01R31/085 ,  H02H7/26 ,  H02H7/261 ,  H02H7/265

Abstract: Disclosed herein are various embodiments of systems and methods for calculating a fault location in electric power delivery system based on a traveling wave created by an electrical fault in the electric power delivery system. According to one embodiment, an intelligent electronic device may be configured to detect a transient traveling wave caused by an electrical fault. A first traveling wave value of the transient traveling wave may be determined and a corresponding first time associated with the first traveling wave may be determined. The IED may receive a second time associated with a second traveling wave value of the transient traveling wave detected by a remote IED. The distance to the remote IED may be known. An estimated fault location may be generated based on the time difference between the first time and the second time. Additional methods of calculating the fault location may also be employed.

Abstract translation: 这里公开了用于基于由电力输送系统中的电气故障产生的行波来计算电力输送系统中的故障位置的系统和方法的各种实施例。 根据一个实施例，智能电子设备可以被配置为检测由电故障引起的瞬态行波。 可以确定瞬态行波的第一行波值，并且可以确定与第一行波相关联的对应的第一时间。 IED可以接收与由远程IED检测的瞬态行波的第二行波值相关联的第二次。 到远程IED的距离可能是已知的。 可以基于第一时间和第二时间之间的时间差来生成估计的故障位置。 还可以采用额外的计算故障位置的方法。