A scheme based on ANNs for single-phase fault location in distribution systems with DG

摘要

This work presents the development and evaluation of a new scheme based on Artificial Neural Network (ANN) for fault detection and fault location in distribution systems with distributed generator. Two different ANNs are used, where the first one is able to detect which part of the distribution system the fault occurred and the second one is able to precisely locate the fault along the faulty line. Results show that the proposed scheme presents a good performance for different fault locations and fault resistances. Only single-phase faults were considered, as they are the majority in distribution systems, thus representing an important problem to be addressed. The solution here presented does not need any additional infrastructure, by using only data stored in existing protection relays.