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    SYSTEMS AND METHODS FOR IDENTIFYING FAULTED SEGMENTS IN MULTIPHASE POWER NETWORKS
    1.
    发明申请
    SYSTEMS AND METHODS FOR IDENTIFYING FAULTED SEGMENTS IN MULTIPHASE POWER NETWORKS 审中-公开
    用于识别多相电力网络中的故障部分的系统和方法

    公开(公告)号：US20160282397A1

    公开(公告)日：2016-09-29

    申请号：US15174687

    申请日：2016-06-06

    申请人： ABB Inc.

    发明人： Ning Kang ,  Mirrasoul Mousavi

    IPC分类号： G01R31/02 ,  G01R31/08

    CPC分类号： G01R31/024 ,  G01R31/08 ,  G01R31/086 ,  H02H3/405 ,  H02H7/28 ,  Y04S10/522

    摘要： Systems and methods for identifying faulted segment(s) in a multiphase power network may include receiving a current measurement that was measured during a fault, obtaining a set of equivalent sequence impedances for the segments, building a set of sequence bus impedance matrices, selecting a segment, calculating coefficients for the segment based on the set of equivalent sequence impedances for the segment and the sequence bus impedance matrices, calculating an estimated per unit fault distance for the segment based at least partially on the current measurement and the coefficients, identifying the segment as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one, and repeating for each of the segments the calculating coefficients, calculating an estimated per unit fault distance, and identifying as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one.

    摘要翻译： 用于识别多相电力网络中的故障段的系统和方法可以包括接收在故障期间测量的当前测量，获得用于段的一组等效序列阻抗，构建一组序列总线阻抗矩阵，选择一个 基于段和序列总线阻抗矩阵的等效序列阻抗的集合来计算段的系数，至少部分地基于当前测量和系数来计算段的每单位故障距离的估计，识别段 如果该段的估计故障距离在约零和约1之间，则作为潜在故障段，并且对于每个段重复计算系数，计算每单位故障距离的估计，并且如果估计的 段的故障距离在大约零到大约1之间。

    VOLTAGE BASED METHOD FOR FAULT IDENTIFICATION IN A TRANSMISSION LINE AND APPARATUS THEREOF
    5.
    发明申请
    VOLTAGE BASED METHOD FOR FAULT IDENTIFICATION IN A TRANSMISSION LINE AND APPARATUS THEREOF 审中-公开
    传输线故障识别的基于电压的方法及其设备

    公开(公告)号：US20130317768A1

    公开(公告)日：2013-11-28

    申请号：US13982297

    申请日：2011-03-17

    申请人： Ying Yang ,  Youyi Li ,  G. Pradeep

    发明人： Ying Yang ,  Youyi Li ,  G. Pradeep

    IPC分类号： G01R31/02

    CPC分类号： G01R31/025 ,  G01D21/00 ,  G01R27/00 ,  G01R31/021 ,  G01R31/08 ,  G06F17/40 ,  G06F19/00 ,  H02H3/06 ,  H02H3/083 ,  H02H3/402 ,  H02H3/405 ,  H02H7/26

    摘要： The present invention provides a method for current for fault identification in a transmission line and an apparatus thereof. The method comprises the following steps: measuring the real-time values of the currents and the voltages of the other unbroken healthy phase conductors when a single-phase fault occurs; calculating the inductive voltage and the capacitive coupling voltage according to the measured currents and voltages respectively; comparing the capacitive coupling voltage with the inductive voltage multiplied by a factor, in which the multiplication result is used as a self-adjusted threshold based on the real time load condition of the transmission line; and identifying the fault type based on the maximum of the capacitive coupling voltage and the multiplication.

    摘要翻译： 本发明提供一种用于传输线路中的故障识别电流的方法及其装置。 该方法包括以下步骤：当发生单相故障时，测量其他不间断健康相导体的电流和电压的实时值; 根据测量的电流和电压分别计算感应电压和电容耦合电压; 将电容耦合电压与乘以因子的感应电压进行比较，其中乘法结果用作基于传输线的实时负载条件的自调整阈值; 并基于电容耦合电压和乘法的最大值来识别故障类型。

    ELECTRICAL FAULT LOCATION DETERMINATION IN A DISTRIBUTION SYSTEM BASED ON PHASOR INFORMATION
    7.
    发明申请
    ELECTRICAL FAULT LOCATION DETERMINATION IN A DISTRIBUTION SYSTEM BASED ON PHASOR INFORMATION 审中-公开
    基于相位信息的分布式系统中的电气故障位置确定

    公开(公告)号：US20140229127A1

    公开(公告)日：2014-08-14

    申请号：US14158108

    申请日：2014-01-17

    申请人： Alstom Grid, Inc.

    发明人： Jinfeng Ren ,  Subrahmanyam Saraswati Venkata

    IPC分类号： G01R31/08

    CPC分类号： G01R31/086 ,  G01R19/2513 ,  G01R31/088 ,  H02H3/40 ,  H02H3/405 ,  Y02E60/728 ,  Y04S10/265 ,  Y04S10/522

    摘要： Determination of information relating to a location of an electrical fault in an electrical energy distribution system based on phasor information is disclosed. A component can receive phasor information and electrical energy distribution system information. The system can determine a distance factor based on the phasor information. The distance factor can be employed to determine fault location information. A set of fault location information can be generated. Fault location information can be corrected for fault characteristics. Equivalent circuit models can be employed in determining the distance factor. Fault locations can be validated to facilitate generating subset of fault location information. Access to fault location information can be facilitated.

    摘要翻译： 公开了基于相量信息确定与电能分配系统中的电气故障位置有关的信息。 组件可以接收相量信息和电能分配系统信息。 系统可以根据相量信息确定距离因子。 距离因子可用于确定故障位置信息。 可以生成一组故障位置信息。 故障位置信息可以纠正故障特征。 等效电路模型可用于确定距离因子。 可以验证故障位置以便于生成故障位置信息的子集。 可以方便地访问故障位置信息。

    Method and directional element for fault direction determination in a capacitance-compensated line
    8.
    发明授权
    Method and directional element for fault direction determination in a capacitance-compensated line 有权
    电容补偿线路中故障方向确定的方法和方向元件

    公开(公告)号：US06584417B1

    公开(公告)日：2003-06-24

    申请号：US09425661

    申请日：1999-10-22

    申请人： Yi Hu ,  Damir Novosel ,  David G. Hart

    发明人： Yi Hu ,  Damir Novosel ,  David G. Hart

    IPC分类号： G01R3108

    CPC分类号： G01R31/085 ,  H02H3/081 ,  H02H3/405

    摘要： An electrical power system includes a transmission line for transmitting electrical power, series capacitance compensation series-coupled to the transmission line adjacent one end thereof, where the series compensation includes a capacitance having a value (−j XCAP), and a protective relay at the one end of the transmission line for monitoring line voltages and line currents on the transmission line. Upon sensing a fault, an impedance Z of the line is calculated based on the monitored line voltages and line currents. The calculated impedance Z is adjusted according to the value of the capacitance of the series compensation (−j XCAP) to result in a modified impedance ZMOD, and the phasor angle Of ZMOD is examined to determine the direction of the sensed fault. The fault is in a first direction if the phasor angle is between X and X+180 degrees and is in a second direction opposite the first direction if the phasor angle is between X+180 and X+360 degrees.

    摘要翻译： 电力系统包括用于发送电力的传输线，串联耦合到其一端附近的传输线的串联电容补偿，其中串联补偿包括具有值（-j XCAP）的电容，以及保护继电器 传输线的一端用于监测传输线上的线路电压和线路电流。 在检测到故障时，根据被监测的线路电压和线路电流计算线路的阻抗Z。 根据串联补偿（-j XCAP）的电容值调整计算阻抗Z，得到修正的阻抗ZMOD，并检查ZMOD的相量角以确定感测故障的方向。 如果相量角在X和X + 180度之间，并且如果相量角在X + 180和X + 360度之间，并且处于与第一方向相反的第二方向，则故障处于第一方向。