基于主动注入信号法的单相接地故障定位方法

Single-phase Grounding Fault Location Method Based on Active Signal Injection Method

提出了一种基于主动注入信号法的单相接地故障定位方法,当配电线路发生单相接地故障时,主动信号发生器向系统注入信号,故障指示器通过信号提取算法,提取出系统上被注入的区别于故障回路外的明显特征信号,判断出该信号后上报故障从而实现故障定位。

This paper proposes a fault location method of single-phase grounding based on active signal injection method.When a single-phase grounding fault occurs in the distribution line,the active signal generator injects signals into the system.With signal extraction algorithm,the fault indicator extracts the obvious characteristic signals that are injected into the system and different from those outside the fault loop,to determine the signals and then report the fault,so as to realize fault location.