小电流接地系统故障选线与定位方法研究

Review of Methods on Faulty Line Selection and Fault Location in Small Current Grounded System

介绍了我国中压配电网小电流接地系统现状和单相接地短路时的故障选线与定位难题。分类讨论了小电流接地系统,对两种小电流接地系统的故障特征进行了分析和区别。针对不同接地系统总结归纳了相应的国内外故障选线与定位方法,分析了各方法的基本原理,指出了存在的问题并对应用效果进行了评价。最后,对未来小电流接地故障选线与定位方法进行了展望分析,为该领域的进一步研究提供参考。

This paper introduced the current situation of medium voltage distribution network in China,and the problems of faulty line selection and fault location in small current grounded system. Based on different grounded system,the fundamentals as well as weaknesses of the relevant methods were classified and discussed. The application effect of each method was analyzed and evaluated. Finally,this paper points out the development trend in faulty line selection and fault location technology for small current grounded system,to provide a reference for the further research in this field.