不受波速影响的配电网行波故障定位方法研究

Research on Traveling Wave Fault Location Method for Distribution NetworksNot Affected by Wave Speed

针对目前对配电网中混合线路故障定位困难,传统行波定位法误差较大的问题,提出一种不受波速影响的行波定位法,在一定的限制条件内,该方法可以实现对配电网混合线路10 m以内的故障定位精度。同时就所提出的方法分别设计了复杂配电网模型,模拟不同情况下的故障定位以及不同波速下的故障定位,验证配电网混合线路中故障定位的精确性。

This paper proposes a traveling wave localization method that is not affected by wave velocity,in response to the current difficulty in locating faults in mixed lines in distribution networks and the large error of traditional traveling wave localization methods.With certain limitations,this method can achieve the accuracy of fault localization within mixed lines in distribution networks.Meanwhile,complex distribution network models were designed by the methods proposed in this paper to simulate fault localization in different situations and different wave speeds,and to verify the accuracy of fault localization in mixed transmission lines in distribution networks.