The Research and Application of Grounding Fault Locating Method Based on EMD and Waveform Similarity in Non-Solidly Earthed Network
In order to solve the fault location problem of single phase grounding fault in non-solidly earthed distribution network,the constitution,principle and application condition of a new fault locating method are presented in this paper.This method is realized by the distribution automation system(DAS),feeder monitoring unit has been deployed to acquire fault zero sequence current waveform and send the waveform to DAS master station.The locating workstation deployed on master station to get intrinsic mode function(IMF)component from zero sequence current waveform by using empirical mode decomposition(EMD)algorithm,then calculated similarity coefficient of IMF component by analyzing waveform similarity algorithm,finally located fault section according to similarity coefficient.The actual operation results verified that the locating method is reasonable and effective.
non-solidly earthed network fault location empirical mode decomposition intrinsic mode function waveform similarity distribution automation system
Leng Hua Zhu Jiran Tang Haiguo Zhang Zhidan Gong Hanyang Zhong Huabing
State Grid Hunan Electric Power Corporation Research Institute.Changsha,China;College of Electrical State Grid Hunan Electric Power Corporation Research Institute.Changsha,China Beijing Tianshi New Energy Technology CO.,LTD.Beijing,China
国际会议
重庆
英文
600-604
2017-03-25（万方平台首次上网日期，不代表论文的发表时间）