电气技术  2017, Vol. 18 Issue (9): 49-52    DOI:
研究与开发 |
配电网在线故障定位方法研究
张利, 李萍
北京信息科技大学自动化学院,北京 100192
On Line Fault Location of Distribution Network
Zhang Li, Li Ping
Beijing Information Science & Technology University, Beijing 100192
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摘要 当中性点谐振接地系统发生单相接地故障时,故障电流比较小,故障定位十分困难。本文对谐振系统单相接地故障进行原理分析,给出消弧线圈电抗调节后线路上零序电流的变化特点,根据零序电流增量给出故障信息矩阵,结合区段和监测点之间的网络拓扑关系,进行矩阵运算,实现了中性点谐振系统的在线区段故障定位。仿真实验证明了该方法的有效性。
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张利
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关键词 谐振接地系统单相接地故障区段故障定位矩阵算法    
Abstract:When the single-phase-to-ground fault occurs in neutral point resonant grounded system resonant, the fault current is small and the fault location is very difficult. In this paper, the principle of single-phase-to-ground fault occurred in neutral point resonant system is analyzed, and the variation characteristics of zero sequence current on each line are given with the adjustment of arc suppression coil. The fault information matrix is present based on the increment of the zero sequence current, and section fault location is realized by the matrix operation of fault information matrix with network relevant matrix which combining the topological relationship between the section and the monitoring point. Simulation results show the effectiveness of the proposed method.
Key wordsneutral point resonant system    single-phase-to-ground fault    section fault location    matrix algorithm   
     出版日期: 2017-09-20
基金资助:北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD201404126); 北京市教育委员会科技计划项目(KM201311232007)
作者简介: 张 利(1979-),女,副教授,主要研究方向为电力系统分析与控制。
引用本文:   
张利, 李萍. 配电网在线故障定位方法研究[J]. 电气技术, 2017, 18(9): 49-52. Zhang Li, Li Ping. On Line Fault Location of Distribution Network. Electrical Engineering, 2017, 18(9): 49-52.
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https://dqjs.cesmedia.cn/CN/Y2017/V18/I9/49