标题：The Study of Wavelet Analysis in Line Selection of Single-Phase Earth Fault in Medium Voltage Distribution Network
作者：Lv, Changzhi; Peng, Fei
作者机构：[Lv, Changzhi; Peng, Fei] Shandong Univ Sci & Technol, CEEA, Qingdao 266590, Shandong, Peoples R China.
会议名称：International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE)
会议日期：MAR 12-13, 2016
来源：Proceedings of the 2016 International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE)
关键词：fault line; wavelet criteria; transient current; detected
摘要：On the basis of detection fault line research about abstraction transient fault information in ground system, the fault line could be selected because of its high frequency transient current. After we discussed and analyzed the wavelet criteria of the detected signal in theory, the significant amplitude of correlation analysis in the selected fault line can be proved. We put forward a fault line identifying principle based on the difference of magnitude with wavelet transform. At the same time, the model of the selection fault line in ground system can be simulated by MATLAB. In the paper, some obviously detected fault line features and the extraction zero-sequence currents of wavelet transform amplitude used in route selection have been tested in medium voltage distribution network with small current grounding system.