A Study on Simultaneous Measurement of Partial Discharge in Epoxy Resin Insulator using IMC and Rogowski Coil

Norfadilah Rosle; Mohamad Nur Khairul Hafizi Rohani; Wan Nurul Auni Wan Mohammad; Nor Asiah Muhamad; Mohamad Kamarol Mohd Jamil

doi:10.37934/araset.42.2.104111

Authors

Norfadilah Rosle School of Electrical and Electronic, Universiti Sains Malaysia, Penang, Malaysia
Mohamad Nur Khairul Hafizi Rohani Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, Perlis, Malaysia
Wan Nurul Auni Wan Mohammad Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, Perlis, Malaysia
Nor Asiah Muhamad Faculty of Engineering, Universiti Teknologi Brunei, Gadong, Brunei
Mohamad Kamarol Mohd Jamil School of Electrical and Electronic, Universiti Sains Malaysia, Penang, Malaysia

DOI:

https://doi.org/10.37934/araset.42.2.104111

Keywords:

Partial discharge, impedance matching circuit, Rogowski coil, epoxy resin insulator

Abstract

In practice, field measurement of partial discharge is easily suffered by interferences due to the noisy signal has been mixed with the resulting partial discharge signal. Therefore, the detection and measurement of PD are important to monitor the insulation life in high voltage (HV) power equipment. The paper presents the simultaneous measurement of partial discharge (PD) pulse parameters using the impedance matching circuit and the Rogowski coil sensor to study the features of partial discharge on the epoxy resin insulator. Two different thicknesses of samples were used to observe the PD pulse parameters with the voltage applied vary depending on the thickness of the sample to attain constant electric field intensity for both samples. The step response parameters resulted from the measurement can be used as a time domain features to discriminate various types of PD in HV power equipment. Thus, the PD can be observed clearly, maintenance can be performed, and the performance of the power system can be improved.