Method of Fault Line Selection in Small Current Neutral Grounding System Based on Wavelet Analysis and GA-BP NN

The neutral of distribution network is usually non-direct grounding at present(small current system).In distribution network,phase to ground fault is the primary fault.Selecting the fault line truly and reliably is still a difficult problem.A method of combining Wavelet and GA-BP neural network(NN) is utilized to select the faulty line.The Matlab simulation verifies the effectiveness of the proposed method.