Fault location of multistage feeders in distribution network

To enhance the fault location precision of multistage feeders in distribution network, a new section location method is proposed. In this paper, the fault characteristics of transient zero-sequence current transient components are analyzed, and the amplitude characteristics of zero-sequence current in the upstream and downstream nodes of the fault point are determined by using the mathematical relationship. The Hausdorff distance algorithm is introduced to construct a comprehensive criterion combining section distance and correlation coefficient. Further, the fault section can be effectively distinguished by comparing the criterion with the set threshold. The Matlab simulation demonstrates that the proposed method can accurately locate the fault section.