中国电机工程学报2017，Vol.37Issue(14)：4109-4115,7.DOI:10.13334/j.0258-8013.pcsee.161011
利用行波到达时差关系的配电网故障定位算法
Fault Location Algorithm for Distribution Power Network Based on Relationship in Time Difference of Arrival of Traveling Wave
刘晓琴 1王大志 1江雪晨 1宁一1
作者信息
- 1. 东北大学信息科学与工程学院,辽宁省沈阳市110819
- 折叠
摘要
Abstract
Existing fault location technologies were known to perform poorly on distribution power network.In this paper,a new fault location algorithm for distribution power network based on relationship in time difference of arrival of traveling wave was demonstrated.The distribution power network was split up into several nodes giving equal interval,on the basis of these nodes,the traveling wave path matrix was constructed which represented the distances between each node and any line terminal in the network.From path matrix,it was possible to determine the propagation times of traveling wave in each path,then the matrixes of the time difference of arrival among the traveling wave of every branch for all nodes were established.When a fault occurred,the arrival times of the first fault-induced traveling waves which were monitored at the line terminals in the network were acquired by wavelet transformation.Based on the actual arrival times,the matrix of the time difference of arrival for fault point was established.Respectively,comparing the matrix for fault point with the matrix for each node,when the different was minimized between the two,the node was identified as fault point.To improve the efficiency for constructing path matrix,the line structure normalization was implemented and a general method for path length calculation was proposed.A lot of simulation results show that the location algorithm is accurate and effective.关键词
行波/配电网/故障定位/归一化/到达时间差Key words
traveling wave/distribution power network/fault location/normalization/the time difference of arrival分类
信息技术与安全科学引用本文复制引用
刘晓琴,王大志,江雪晨,宁一..利用行波到达时差关系的配电网故障定位算法[J].中国电机工程学报,2017,37(14):4109-4115,7.
