Partial discharge behaviours within a void-dielectric system under square waveform applied voltage stress

Illias, Hazlee Azil and Tunio, M.A. and Bakar, Ab Halim Abu and Mokhlis, Hazlie and Chen, G. (2014) Partial discharge behaviours within a void-dielectric system under square waveform applied voltage stress. IET Science, Measurement & Technology, 8 (2). pp. 81-88. ISSN 1751-8822

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Abstract

There are many factors, which influence the behaviours of partial discharge (PD) within a void located in a solid dielectric material. One of the important factors is the waveform of the applied voltage on the electrode of a system, such as its amplitude and frequency. In this study, a two-dimensional axial-symmetric model of a cylindrical void in polyethylene layers has been developed using finite element analysis software. The model was used to simulate PD activity in the void under square waveform applied voltage under different amplitudes of the voltage. The model has considered the effect of charge propagation along the void surface during a PD occurrence. The obtained simulation results were compared with the measurement results reported from previous literature to validate the PD model that has been developed in this work. It was found that the simulation and measurement results are within reasonable agreement with only slight disagreement. From the comparison, critical parameters from the model that affect PD behaviours under square waveform applied voltage were found to be the electron generation rate and the inception, extinction and critical charge propagation fields. These findings may increase an understanding of PD behaviours within a void in a dielectric material under square waveform applied voltage, which is important for insulation diagnosis.

Item Type: Article
Uncontrolled Keywords: PD activity; PD model; Charge propagation effect; Critical charge propagation fields; Cylindrical void; Electrode; Electron generation; Finite element analysis software; Insulation diagnosis; Partial discharge behaviours; Polyethylene layers; Solid dielectric material; Square waveform; Two-dimensional axial-symmetric model; Void-dielectric system; Voltage stress
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 09 Jan 2015 05:43
Last Modified: 16 Jul 2019 09:01
URI: http://eprints.um.edu.my/id/eprint/11784

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