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.