A Novel Fault Location Method for Multi-branch Distribution Network

To improve the accuracy of fault location for distribution network, a novel fault location method is proposed in this paper. According to transmission characteristics of traveling wave, multi-branch distribution network can be divided into multi-level T -branches. And a three-terminal fault matrix is defined. By the analysis of fault characteristic in the three-terminal fault matrix, an identification principle of potential fault line is built. Then, according the potential fault line, a new three-terminal fault matrix is established. The scope of fault line is gradually narrowed until the potential fault line is the real fault line. Simulations show that the proposed method can locate faults accurately and improve reliability of fault location for distribution network.