Fault Location in Power Distribution Network with Presence of Distributed Generation Resources Using Impedance Based Method and Applying π Line Model

In this paper, an improved impedance based method has been proposed for fault location in power distribution network with presence of photovoltaic distributed generation resources. Within this method, current and voltage are measured at the beginning of feeder and at the location of distributed generation resources. The π line model is used for improving the accuracy of the suggested method. To evaluate the accuracy of the proposed method, the modified 11 node test Feeder is simulated in the Matlab software and sensitivity of the suggested method was investigated against the different fault distances fault types, fault resistances and fault inception angles. The results indicate the high accuracy of the algorithm.