一种基于时间域的实用单侧电量故障测距方法

【摘要】 分析了现时广泛应用的基于频域的正弦稳态故障测距方法的不足，指出其对网 络运行参数过分依赖，介绍了一种不需知道网络运行参数的时域法，同时，利 用频域法的优点对其假设条件进行修正，将时域与频域两种方法的优越性有机 地结合起来。该方法最少只需四个采样点就可构造出一个简单的关于故障距离 的非线性方程组，易于在微机自动化装置上实现。该方法被成功地应用于一种 故障录波分析装置。

A TIME DOMLAN BASED PRACTICAL FAULT LOCATING ALGORITHM USING ONE TERMINAL VOLTAGE AND CURRENT

This paper analyzes the flaws of locating transmission line fault method using sine stable component in frequence domain , points out its dependance of network operating parametres and introduces a time-domain approch which may not know the network porametres. Meantime ,the hypothesis condition is adjusted by frequence-domain method. Therefor , the advantage of two metheds is combined. The algorithmcan construct a set of simple nolinear equations about fault distance with only four sampling values , whichis easily solved with micro-computer. The approch has been successfully applied in a digital faultrecorder.