摘要
针对小电流接地系统大约70％～80％的故障都是单相故障，接地选线非常重要；目前的选线方法虽然很多，但经常出现误选误判的情况。没有从根本上解决小电流接地选线的问题。指出小波变换是一种非常成熟的数学工具，用小波变化对行波进行处理，可以得到行波信号的幅值和极性特性。利用故障线路和非故障线路行波幅值和极性的差别。形成选线判据．可以方便找到故障线路，提高选线准确性和选线速度．为配网故障选线提供新的思路和出发点。
It is very important to select earthing for 70%-80% faults are single ones so far, Although methods are various. It often made mistakes in selecting. We use differences between fault lines and non-accident lines to select, so as to find out faults lines rise accuracy and selecting speed give new thoughts of distributing fault selection.
出处
《山西电力》
2006年第6期10-12,共3页
Shanxi Electric Power
关键词
小电流接地系统
行波
接地选线
minimal current earthing system
travelling wave
earthing selecting
