Measurement of internal partial discharges in dielectric oils by applying the electrical method

Abstract

This document details of the conventional electric method for measuring partial discharges (DP) based on the norm IEC 60156, various test were performed on dielectric oils which had different qualities, the test results were processed through MATLAB's signal processing filters in conjunction with fast fourier transform (FFT) in order to determine the type of partial discharge based on the quality of the dielectric oil and it's contamination level.