一种配电线路单相接地故障测距算法

单相接地故障是配电线路发生几率最高的故障类型，快速、准确的故障定位对于维护配电线路的安全运行有重要意义。基于对称分量分解的原理，建立了线路分布参数模型，从单相接地的特点出发对测距判据进行了研究并构造了判据函数，提出了利用单侧信息的配电线路单相接地故障测距算法。大量的计算机仿真结果表明该算法对于单条线路和带分支的线路都是有效的，而且准确度与接地阻抗是否为纯阻性无关，非常适用于配电线路接地故障测距

Location algorithm for line-to-ground fault on power distribution lines

Line to ground fault is the most frequent fault on power distribution lines. Fast and accurate fault location is important to the normal working of power distribution lines. This paper described the line model of distributed parameters and presents a new algorithm for line to ground fault location using one terminal electrical data of distribution lines based on the theorem of symmetry components separation. This algorithm has been proved to be effective for single transmission line and distribution network with offset lines by computer simulation and the fault impedance does not affect the location accuracy. This algorithm is very propitious to fault location for distribution lines.