公开(公告)号：WO2012122711A1

公开(公告)日：2012-09-20

申请号：PCT/CN2011/071887

申请日：2011-03-17

Applicant: ABB TECHNOLOGY LTD. ,  YANG, Ying ,  LI, Youyi ,  PRADEEP, G.

Inventor： YANG, Ying ,  LI, Youyi ,  PRADEEP, G.

IPC: H02H7/26 ,  H02H3/06

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

Abstract: A voltage based method for fault identification in a transmission line and an apparatus thereof. The method comprises the following steps: measuring real-time values of currents and voltages of unbroken healthy phase conductors in the transmission line when a single-phase fault occurs; respectively calculating an inductive voltage and a capacitive coupling voltage according to the measured currents and voltages (304); comparing the capacitive coupling voltage with the inductive voltage multiplied by a factor, wherein 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 compared result.

Abstract translation: 一种用于传输线路中的故障识别的基于电压的方法及其装置。 该方法包括以下步骤：当单相故障发生时，测量传输线中不间断健康相导体的电流和电压的实时值; 分别根据测量的电流和电压来计算感应电压和电容耦合电压（304）; 将所述电容耦合电压与乘以因子的感应电压进行比较，其中所述乘法结果基于所述传输线的实时负载条件被用作自调整阈值; 并根据比较结果识别故障类型。

公开(公告)号：WO01001537A1

公开(公告)日：2001-01-04

申请号：PCT/US2000/018073

申请日：2000-06-30

IPC: H02H3/40

CPC classification number: H02H3/402

Abstract: An improved reactance characteristic for an overall ground distance quadrilateral characteristic embodies a particular phase selector, possibly among a plurality of phase selectors and variables, that eliminates undesirable generation of a tripping signal other than only for a selected phase to ground fault. This phase selector is I1FZ1, where Z1 is the positive sequence replica impedance and I1F is the fault component of the positive sequence current component, referenced to the proper phase. Preferably, the pre-fault load current is removed from this quantity. Additionally, an improved restricted phase directional function is implemented, further improving the overall performance of the quadrilateral characteristic relay.

Abstract translation: 本发明涉及在全局四边形接地距离特性的情况下改善电抗特性。 为此目的，使用可能从多个相位选择器和变量中选择的特定的相位选择器，以消除除了意图用于相位/相位故障的信号之外的不期望的触发信号的产生。 大地。 该相位选择器等于I1FZ1，Z1表示正序列的复制品的阻抗，I1F表示相对于适当相位参考的所述正序列的当前分量的故障分量。 优选地，从该数量中消除缺陷之前的电荷量。 此外，还实现了改进的定向相位限制功能，以进一步改善四边形继电器的整体性能。

公开(公告)号：WO2011038757A1

公开(公告)日：2011-04-07

申请号：PCT/EP2009/062669

申请日：2009-09-30

Applicant: AREVA T&D UK LIMITED ,  WISZNIEWSKI, Andrzej ,  LUKOWICZ, Miroslaw ,  MICHALIK, Marek ,  KLIMEK, Andrzej

Inventor： WISZNIEWSKI, Andrzej ,  LUKOWICZ, Miroslaw ,  MICHALIK, Marek ,  KLIMEK, Andrzej

IPC: H02H3/30 ,  H02H3/40

CPC classification number: H02H3/307 ,  H02H3/402

Abstract: The invention concerns a method of impedance groundfault detection for differential protection of an overhead transmission line in a three-phase high voltage electric power transmission system which comprises many lines (1,12) and many protection relays (2,4), which comprises the following steps : 1) in prefault condition : - measuring the differential current (I); - measuring the phase voltage (II) at the relay location; - measuring the phase current (III) the relay location; - calculating the differential admittance (IV), with the following equation : (formula (V)). With (VI) : the positive sequence impedance of the line-protected. 2) In operating condition : - measuring the differential current (VII); - measuring the phase voltage (VIII) at the relay location; - measuring the phase current (IX) at the relay location; calculating the differential admittance (X), with the following equation : (formula (XI)); - detecting a high impedance groundfault detection, if the following formula is verified : (XII) with (XIII); B 0 = the total line admittance.

Abstract translation: 本发明涉及一种用于三相高压电力传输系统中架空输电线路的差动保护的阻抗接地故障检测方法，该系统包括许多线路（1,12）和许多保护继电器（2,4），其包括 以下步骤：1）在预失电状态下： - 测量差动电流（I）; - 测量继电器位置的相电压（II）; - 测量相电流（III）继电器位置; - 通过以下等式计算差分导纳（IV）：（公式（V））。 带（VI）：线路保护的正序阻抗。 2）运行状态： - 测量差动电流（VII）; - 测量继电器位置的相电压（VIII）; - 在继电器位置测量相电流（IX）; 用下式计算差分导纳（X）：（式（XI））; - 检测高阻抗接地故障检测，如果下列公式被验证：（XII）与（XIII）; B0 =总线路导纳。

公开(公告)号：WO2010056431A2

公开(公告)日：2010-05-20

申请号：PCT/US2009/059463

申请日：2009-10-03

Applicant: GENERAL ELECTRIC COMPANY ,  DOUGHERTY, John, James ,  FINNEY, Dale ,  NAVARATNAM, Senthoor

Inventor： DOUGHERTY, John, James ,  FINNEY, Dale ,  NAVARATNAM, Senthoor

IPC: G01R35/00 ,  G01R27/16

CPC classification number: H02H3/006 ,  G01R19/2513 ,  H02H3/402

Abstract: A device and method for dynamically determining an impedance of a network is disclosed. The device includes at least a processing system for measuring a network voltage and network current when said network is determined to be in a first state, measuring a network voltage when said network is determined to be in a second state, estimating said impedance value dependent upon said measured voltages and current, adapting said estimated impedance based on at least one prior impedance value and storing at least said adapted impedance.

Abstract translation: 公开了用于动态确定网络的阻抗的设备和方法。 该设备包括至少一个处理系统，用于当所述网络被确定处于第一状态时测量网络电压和网络电流，当所述网络被确定处于第二状态时测量网络电压，估计所述阻抗值取决于 所述测量的电压和电流，基于至少一个在先阻抗值来调整所述估计的阻抗，并至少存储所述适应的阻抗。

公开(公告)号：WO2008046451A1

公开(公告)日：2008-04-24

申请号：PCT/EP2006/067552

申请日：2006-10-18

Applicant: ABB TECHNOLOGY LTD ,  AKKE, Magnus ,  WESTMAN, Björn ,  ÅSHUVUD, Henrik

Inventor： AKKE, Magnus ,  WESTMAN, Björn ,  ÅSHUVUD, Henrik

IPC: H02H3/08

CPC classification number: H02H3/402 ,  G01R31/088

Abstract: The present invention relates to a load compensation method for phase-to-ground loops in distance protection, comprising following steps: estimating a first reactive reach (αc) assuming zero fault resistance or with a positive sequence current; estimating a second reactive reach (α0) with a zero sequence current; estimating a third reactive reach (α2) with a negative sequence current; estimating import or export condition; estimating a fourth reactive reach for import (αi) or export (αe) condition based on the first, second and third reactive reach; and estimating a fault impedance based on the estimated fourth reactive reach.

Abstract translation: 本发明涉及一种距离保护中相对地环路的负载补偿方法，包括以下步骤：假设零故障电阻或正序电流估计第一无功范围（ac）; 以零序电流估计第二反应达到（a0）; 以负序电流估计第三反应达到（a2）; 估计进出口情况; 根据第一，第二和第三无效范围估计进口（ai）或出口（ae）条件的第四个反应性达到率; 并基于估计的第四无功范围来估计故障阻抗。

公开(公告)号：WO2003036312A2

公开(公告)日：2003-05-01

申请号：PCT/US2002/034059

申请日：2002-10-23

Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.

Inventor： ROBERTS, Jeffrey, B.

IPC: G01R31/00

CPC classification number: H02H3/402 ,  G01R31/025 ,  H02H3/081

Abstract: The directional element, following enablement under selected input current conditions, calculates a zero sequence impedance, in response to values of zero sequence voltage and zero sequence current. The current value is selected between two possible values, one being the value from an associated current transformer, the other being the sum of the currents I A +I B +I C . The calculated zero sequence impedance is then compared against sensitive selected threshold values, established particularly for ungrounded systems. A forward fault indication is provided when the calculated zero sequence impedance is above a first established sensitive threshold value, and a reverse fault indication is provided when the calculated zero sequence impedance is below a second established sensitive threshold value.

Abstract translation: 响应于零序电压和零序电流的值，在选定的输入电流条件下启用的方向元件计算零序阻抗。 当前值在两个可能的值之间选择，一个是来自相关联的电流互感器的值，另一个是电流IA + IB + IC的总和。 然后将计算的零序阻抗与特别为未接地系统建立的敏感选定阈值进行比较。 当所计算的零序阻抗高于第一建立的敏感阈值时提供正向故障指示，并且当所计算的零序阻抗低于第二建立的敏感阈值时提供反向故障指示。

公开(公告)号：WO0184687A3

公开(公告)日：2002-02-21

申请号：PCT/US0114013

申请日：2001-04-30

Applicant: SCHWEITZER ENGINEERING LAB INC

Inventor： ROBERTS JEFFERY B ,  HOU DAQING ,  ALTUVE-FERRER HECTOR

IPC: H02H3/08 ,  H02H3/40 ,  H02H9/08

CPC classification number: H02H3/081 ,  H02H3/402 ,  H02H9/08

Abstract: A system for detecting ground faults in a compensated electric power distribution network includes the determination of zero sequence voltage (V0) and zero sequence current (I0) on a power line and calculating the zero sequence conductance (G0) therefrom. The oepration of the conductance calculation circuit occurs only under selected power line conditions involving minimum values of zero sequence voltage, zero sequence current and positive sequence voltage, to ensure the accuracy of a fault direction determination. The conductance values are processed on an adaptive basis in which the difference between the most recent conductance value and a conductance value from a selected previous point in time is determined and then compared against threshold values to make forward and reverse fault declarations.

Abstract translation: 用于检测补偿配电网中的接地故障的系统包括确定电源线上的零序电压（V0）和零序电流（I0），并从其计算零序电导（G0）。 电导计算电路的检测仅在包括零序电压，零序电流和正序电压的最小值的选定电源条件下进行，以确保故障方向确定的精度。 电导值在自适应基础上进行处理，其中确定最近电导值与选定的先前时间点之间的电导值之间的差值，然后与阈值进行比较以产生正向和反向故障声明。

公开(公告)号：WO2010056431A3

公开(公告)日：2010-07-22

申请号：PCT/US2009059463

申请日：2009-10-03

Applicant: GEN ELECTRIC ,  DOUGHERTY JOHN JAMES ,  FINNEY DALE ,  NAVARATNAM SENTHOOR

Inventor： DOUGHERTY JOHN JAMES ,  FINNEY DALE ,  NAVARATNAM SENTHOOR

IPC: G01R27/16 ,  G01R31/08 ,  H02H3/40

CPC classification number: H02H3/006 ,  G01R19/2513 ,  H02H3/402

Abstract: A device and method for dynamically determining an impedance of a network is disclosed. The device includes at least a processing system for measuring a network voltage and network current when said network is determined to be in a first state, measuring a network voltage when said network is determined to be in a second state, estimating said impedance value dependent upon said measured voltages and current, adapting said estimated impedance based on at least one prior impedance value and storing at least said adapted impedance.

Abstract translation: 公开了一种用于动态地确定网络的阻抗的装置和方法。 该装置至少包括一个处理系统，用于当所述网络被确定为处于第一状态时测量网络电压和网络电流，当所述网络被确定为处于第二状态时测量网络电压，估计所述阻抗值取决于 所述测量的电压和电流，基于至少一个先前阻抗值调整所述估计阻抗并且至少存储所述适配阻抗。

公开(公告)号：WO2008034936A1

公开(公告)日：2008-03-27

申请号：PCT/FI2006/050401

申请日：2006-09-19

Applicant: ABB TECHNOLOGY AG ,  WAHLROOS, Ari ,  ALTONEN, Janne

Inventor： WAHLROOS, Ari ,  ALTONEN, Janne

IPC: H02H3/38

CPC classification number: H02H3/402

Abstract: A method and a system for determining a circular characteristic for distance protection of a three-phase electric line (30), the system comprising means for detecting a fault (F) on the electric line (30), means for identifying a faulted phase or phases of the electric line, means for determining, at a measuring point, a first fault loop impedance by using voltage(s) of the faulted phase(s), a second fault loop impedance by using a polarization voltage and a third fault loop impedance by using predetermined line parameters, and means for determining a radius and midpoint of the circular characteristic.

Abstract translation: 一种用于确定三相电线（30）的距离保护的圆形特性的方法和系统，所述系统包括用于检测所述电线（30）上的故障（F）的装置， ，用于识别所述电线的故障相或相的装置，用于在测量点处通过使用所述故障相的（多个）电压来确定第一故障回路阻抗的装置，通过使用第二故障回路阻抗来确定第二故障回路阻抗的装置， 极化电压和第三故障回路阻抗，以及用于确定圆形特征的半径和中点的装置。

公开(公告)号：WO2006076578A2

公开(公告)日：2006-07-20

申请号：PCT/US2006/001239

申请日：2006-01-13

Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.

IPC: H02H3/00

CPC classification number: H02H3/402

Abstract: A system for maintaining fault-type selection during an out-of-step condition is provided comprising an element for calculating the element reach M; an element for fault type selection; an element for out-of-step detection and blocking; and an element for distinguishing between single-phase-to-ground faults and double-phase-to-ground faults. Single-phase-to- ground faults are distinguished from double-phase-to-ground faults through either a derivative or integration element.

Abstract translation: 提供了一种用于在失步状态期间维持故障类型选择的系统，包括用于计算元素到达M的元素; 故障类型选择要素; 用于失步检测和阻塞的元素; 以及用于区分单相对地故障和双相到地故障的元件。 单相接地故障通过导数或积分元件与双相接地故障区分开来。