电测与仪表2016，Vol.53Issue(16)：1-4,4.
基于五次谐波和小波重构能量的配电网单相接地故障的选线方法研究
Research on single-phase fault earth fault line selection method for the distribution network based on fifth harmonics and wavelet reconstruction
摘要
Abstract
In view of frequent single-phase grounding fault in distribution network system, because the fault point cur-rent is very small, so judging fault line accurately becomes very difficult through fifth harmonics amplitude compari-son.The method of fifth harmonics and the combination of wavelet packet energy are presented.The wavelet packet is used to do the third layer wavelet packet decomposition on fifth harmonics of zero sequence current of each line, and then, the total energy on the third floor reconstruction coefficient is calculated.By comparing the fifth harmonic ener-gy of the zero sequence currents, the fault line can be judged.By setting up 10 kV neutral points via arc suppression coil grounding current of single phase short circuit grounding system simulation model, the results show that the meth-od of fifth harmonics and combination of wavelet packet energy can accurately select the fault line.关键词
配电网/五次谐波/小波包/能量计算/仿真Key words
distribution network/fifth harmonics/wavelet packet/energy calculation/simulation分类
信息技术与安全科学引用本文复制引用
孙其东,张开如,刘建,伊利峰,宋祥民,李娅芸..基于五次谐波和小波重构能量的配电网单相接地故障的选线方法研究[J].电测与仪表,2016,53(16):1-4,4.基金项目
山东科技大学研究生创新基金 （）
