公开(公告)号：AU2002332529A1

公开(公告)日：2003-03-03

申请号：AU2002332529

申请日：2002-08-14

Applicant: ABB INC

Inventor： LUBKEMAN DAVID ,  HART DAVID G ,  GORMAN MICHAEL J

IPC: G01M99/00 ,  G01R31/08 ,  G01R31/14 ,  G06F19/00

Abstract: A fault is located in a power distribution system having a line frequency. The power distribution system includes a plurality of phases, at least one feeder, and each feeder includes at least one segment. The fault is located by detecting a faulted phase from the plurality of phases of the power distribution system. A measurement signal having a measurement frequency is injected into the detected faulted phase, the measurement frequency being a different frequency than the line frequency. The fault location is determined for a selected segment based on at least one measured residual current corresponding to the injected signal and a predetermined relative impedance of the power distribution system.

公开(公告)号：WO03016850A2

公开(公告)日：2003-02-27

申请号：PCT/US0225769

申请日：2002-08-14

Applicant: ABB INC

Inventor： LUBKEMAN DAVID ,  GORMAN MICHAEL J ,  HART DAVID G

IPC: G01M99/00 ,  G01R31/08 ,  G01M

CPC classification number: G01R31/086 ,  Y04S10/522

Abstract: A fault is located in a power distribution system 10 having a line frequency. The power distribution system includes a plurality of phases, at least one feeder, and each feeder includes at least one segment. The fault is located by detecting a faulted phase from the plurality of phases of the power distribution system 10. A measurement signal 230 having a measurement frequency is injected into the detected faulted phase, the measurement frequency being a different frequency than the line frequency. The fault location is determined for a selected segment based on at least one measured residual current corresponding to the injected signal and a predetermined relative impedance of the power distribution system 10.

Abstract translation: 故障位于具有线路频率的配电系统10中。 配电系统包括多个相，至少一个进料器，每个进料器包括至少一个分段。 通过检测来自配电系统10的多个相位的故障相位来定位故障。具有测量频率的测量信号230被注入检测到的故障相位中，测量频率是与线路频率不同的频率。 基于与所注入的信号相对应的至少一个测量的剩余电流和配电系统10的预定的相对阻抗来确定所选择的段的故障位置。