A new approach to fault location in three-phase underground distribution system using combination of wavelet analysis with ANN and FLS.

Highlights: [•] A practical 20kV underground power distribution system is simulated. [•] A new method is proposed to analyze UDS transient signals by using WT technique. [•] This method is indeed to classify the fault type, fault branch and fault distance. [•] This approach based on combined WT and ANN–FLS is robust to different case studies. [•] This method gives a high accuracy in fault location under a whole of conditions. [Copyright &y& Elsevier]