SELF-ADAPTIVE TRANSIENT SEGMENT OF SLG FAULT LOCATION IN NEUTRAL NON-EFFECTIVE EARTHED SYSTEM

摘要：

　　The duration of single-line-to-ground (SLG) fault transient signal is greatly influenced by the fault resistance in neutral non-effectively earthed power distribution system.This paper presents a method using the effective segment of transient signal identified by the magnitude of transient signal adaptively for SLG fault location.Therefore,available fault location method can adjust the length of the effective transient signal segment based on the fault cases.The advantage of the presented method is that it can make full use of the transient signal and the accuracy and robustness of the result can be enhanced.In this paper,the location principle is deduced and different approaches are introduced to extract the charge signal,including real wavelet transform,complex wavelet transform and S transform.The validity of the algorithm is studied within MATLAB Simpowersystem environment and the results show that S transform has better accuracy for SLG fault location.

关键词： power distribution system non-effectively earthed system single-line-to-ground fault fault location charge transient signal wavelet transform S transform the effective segment

作者: Mei XU Wenhai ZHANG Linjie DAI Henggui WANG

作者单位: Guang An Electric Power Bureau-China Sichuan University-China

会议类型: 国际会议

会议名称: 第五届中国国际供电会议(GIRED)

会议地点: 上海

会议语种:英文

页码: 1-4

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）