Research on eliminating harmonic in power system based on wavelet theory

Abstract

With the development of applications of high power electronic device as a harmonic wave source in power system increase, and harmonic wave which is the most common interference signals in power system often leads to error, malfunction of electronic equipment. In this paper, a method to determine the wavelet threshold based on wavelet theory with particle swarm optimization is provided to remove the noises which have a good ability to adapt the voltage waveform distortion conditions and to improve the real-time performance of harmonic signal processing. Simulation results show that this method is feasible and effective.