Review of Partial Discharge Signal Denoising Methods in Substations

Partial discharge (PD) is the most important cause of equipment insulation failure. PD detection is of great significance in assessing the insulation condition and service life of power equipment in substations. This paper summarizes the PD signal noise reduction methods, reviews the important research results in recent years, and discusses the advantages and limitations of different denoising methods. Finally, it summarizes the problems in practical application and puts forward the future research and application direction, which provides a reference for the theoretical research and practical application of PD signal denoising.