Partial discharge behavior within a spherical cavity in a solid dielectric material as a function of frequency and amplitude of the applied voltage

Illias, H.A.; Chen, G.; Lewin, P. (2011) Partial discharge behavior within a spherical cavity in a solid dielectric material as a function of frequency and amplitude of the applied voltage. IEEE Transactions on Dielectrics and Electrical Insulation, 18 (2). pp. 432-443. ISSN 1070-9878

[img] PDF - Published Version
Restricted to Repository staff only [error in script]

Download (1333Kb) | Request a copy

    Abstract

    Modeling of the partial discharge (PD) process allows a better understanding of the phenomena. In this paper, a simulation model for spherical cavities within a homogeneous dielectric material has been developed. The model is implemented using Finite Element Analysis (FEA) software in parallel with a mathematical package. This method provides many advantages over previous PD models because discharge events can be simulated dynamically and the electric field in the cavity can be calculated numerically. The model has been used to study the effect of different amplitudes and frequencies of the applied voltage and simulation results have been compared with experimental measurement results. It is found that certain model parameters are dependent on the applied stress and parameters that clearly affect PD activity can be readily identified, these parameters include; the electron detrapping time constant, the cavity surface conductivity, the initial electron generation rate and the extinction voltage. The influence of surface charge decay through conduction along the cavity wall on PD activity has also been studied.

    Item Type: Article
    Journal or Publication Title: IEEE Transactions on Dielectrics and Electrical Insulation
    Additional Information: Faculty Of Engineering, Department Electrical Engineering, University of Malaya
    Uncontrolled Keywords: Partial discharges; finite element analysis; insulation diagnostics.
    Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
    Divisions: Faculty of Engineering
    Depositing User: Dr Hazlee Azil Illias
    Date Deposited: 09 Jun 2011 09:42
    Last Modified: 09 Jun 2011 09:42
    URI: http://eprints.um.edu.my/id/eprint/1353

    Actions (For repository staff only: Login required)

    View Item

    Document Downloads

    More statistics for this item...