A New Protection Scheme for High Impedance Fault Detection using Wavelet Packet Transform

Abstract

This paper proposed a novel technique to effectively discriminate between the HIF and the normal system operation events in distribution by combining a preprocessing module based on wavelet packet transform with an artificial neural network(ANN). Wavelet packet is firstly applied to extract of distinctive feature of current signals. Then this information is introduced to training ANN for identifying an HIF from the normal system operation events. The simulated results clearly show that the proposed technique can accurately identify the HIF in overhead distribution feeder.

Keywords

• artificial neural network
• distribution networks
• fault detection
• high impedance fault
• wavelet packet