Detection of downed conductor in distribution system

The aim of this paper is to present an analysis and simulation methodology to enhance the detection robustness of high impedance fault (HIF) in the distribution feeder. The techniques of discrete wavelet transformations (DWT) and neural networks (NN) have been widely applied in power system research. Consequently, this study developed a novel technique to effectively discriminate between the HIF and the switch operations by combining DWT with NN. The simulated results clearly show that the proposed technique can accurately identify the HIF.