Novel Method for Separating Partial Discharge and Noise by Waveform and Phase Analysis

For power equipment, defects in the insulation parts cause partial discharge, which leads to dielectric breakdown. Since dielectric breakdown can cause serious problems, measurement of partial discharge in actual equipment is important. However, it is difficult to identify partial discharge signals overlapped with noise signals using conventional techniques. Therefore, in this paper, we developed a new partial discharge detection method that can identify partial discharge signals and noise signals by analyzing waveform and phase distribution.