Improved Algorithm for Fault Location in Distribution Network with Distributed Generations

Feeder terminal units (FTU) are widely used in recently improved reconstruction of distribution network (DN), and matrix algorithm is applied extensively for fault section location in DN. With the increasing penetration of Distributed Generation (DG), DN becomes multi-sources network, and the configuration of DN becomes more and more complex. It is difficult to determine the fault section by the existing algorithms, which need large amount of calculation or complicated criterion. So an improved matrix algorithm to fault section location for DN with DGs is proposed in this paper. Based on the types of DGs connecting just two positive directions are supposed respectively for network matrix and fault information matrix. And the improved algorithm is composed with only one step of calculation and more simplicity criterion. The result of analysis shows that fault section location can be determined effectively by novel scheme.