10kV直配线路单相断线兼接地故障实用诊断方法

A Practical Method for Line-open with Line-to-ground Fault Diagnosis on 10kV Direct Distribution Lines

本文提出了一种利用线路单端信息实现单相断线兼接地故障测距的新算法。本文法采用分布参数电路模型，利用对称分量法，于故障后在线路始端施加正弦诊断信号，并检测起始端口的电压电流相量，以此实现故障点的精确测距，大量的计算机仿真和在模型线路上的试验表明，本方法具有很高的精度。

This paper presents a new technique for accurately locating faults on 10kV direct distribution lines The technique utilizes singles at initial end of the line By the way of a distributed parameter circuit model constructed,symmetrical components method used,sine detection single given and voltage phasors detected at initial end,the fault location is completed accurately A lot of fault diagnosis simulation by computer and on fault model lines shows the method in the paper is effective \ \