基于路径搜索的配电网多端行波故障定位算法

Multi-End Traveling Wave Fault Location Algorithm for Distribution Network Based on Path Search

配电网结构复杂,多为树形辐射状分布,馈线上分支多,且网络拓扑结构经常发生改变,传统的故障定位方法很难适用于配电网的准确故障定位。提出基于路径搜索的配电网多端行波故障定位算法,首先构建一种新的配电网关联矩阵,充分表达配电网的拓扑结构;然后提出路径搜索的方法,对各末端节点间的最短路径及所经过的线路进行排列;最后综合利用多端暂态行波信息,实现对配电网的准确定位。仿真结果表明;该算法可以快速准确地给出故障距离,且路径搜索可以实现配电网中初始行波传播过程。

The distribution network has complex structure,and mostly tree-shaped radial distribution.Many branches on the feeder and the network topology often changes.The traditional fault location method is difficult to apply to the accurate fault location of the distribution network.In this paper,a multi-end traveling wave fault location algorithm based on path search is proposed.Firstly,a new distribution network association matrix is constructed,which fully expresses the topology of the distribution network.Then the path search method is put forward.The shortest path between the end nodes and the route that passes through are arranged.Finally,the multi-terminal transient traveling wave information is comprehensively utilized to achieve accurate positioning of the distribution network.The simulation results show that the algorithm can quickly and accurately give the fault distance and the path search can realize the initial traveling wave propagation process in the distribution network.