On the use of spectral power ratios for partial discharge and noise separation in radiofrequency measurements

Abstract

Partial discharge (PD) measurements are commonly used in the maintenance of high-voltage equipment. New research is being done devoted to the measurement of the phenomenon in radiofrequency (RF) because it has several advantages compared to other classical methods. However, noise rejection is still one of the main challenges to face. In this paper, a method based on the power spectral share in bands of frequency, already used in classical measurements, is applied to separate RF signals emitted by PD and noise.