Partial Discharge Signal De-noising Method Based on EMD and High Order PDE

Abstract

Abstract-The voltage level of power system is continuously improved. Partial discharge (PD) test is an important means to detect the insulation performance of high voltage electrical equipment. The electromagnetic environment of the test site is complicated. The extracted PD signal is submerged by noise. In order to get a more real PD signal, noise removal is inevitable. Aiming at this aspect, this paper proposes using empirical mode decomposition (EMD) and high order partial differential equation (PDE) to suppress the interference signal. The simulation results show that using this method to deal with the effect of PD signal is very obvious.