小电流接地系统单相接地故障测距新算法

A New Algorithm about Location for Single-Phase-to -EarthFault in Ungrounded Distribution System

介绍一种新的小电流接地系统的输电线路单相接地故障测距算法。该算法仅需一端参数来进行计算 ,能有效地消除负荷分量和接地电阻对故障测距精确性的影响。数字仿真结果表明 ,其测距结果比较准确。

This paper presents a new algorithm for locating single-phase-to-earth fault in ungrounded distribution system. Only one end data were used in the algorithm. The algorithm can effectively eliminate the influence of demand component and grounding resistance on the accuracy of fault location. Digital simulation shows a relatively fair result.