The influence of spherical cavity surface charge distribution on the sequence of partial discharge events

Illias, H. A.; Chen, G.; Lewin, P. (2011) The influence of spherical cavity surface charge distribution on the sequence of partial discharge events. Journal of Physics D: Applied Physics, 44 (24). pp. 1-15.

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    Abstract

    In this work, a model representing partial discharge (PD) behaviour of a spherical cavity within a homogeneous dielectric material has been developed to study the influence of cavity surface charge distribution on the electric field distribution in both the cavity and the material itself. The charge accumulation on the cavity surface after a PD event and charge movement along the cavity wall under the influence of electric field magnitude and direction has been found to affect the electric field distribution in the whole cavity and in the material. This in turn affects the likelihood of any subsequent PD activity in the cavity and the whole sequence of PD events. The model parameters influencing cavity surface charge distribution can be readily identified; they are the cavity surface conductivity, the inception field and the extinction field. Comparison of measurement and simulation results has been undertaken to validate the model.

    Item Type: Article
    Creators:
    1. Illias, H. A.
    2. Chen, G.
    3. Lewin, P.
    Journal or Publication Title: Journal of Physics D: Applied Physics
    Uncontrolled Keywords: Partial discharge
    Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
    Divisions: Faculty of Engineering > School of Electronics and Computer Science
    Depositing User: Dr Hazlee Azil Illias
    Date Deposited: 09 Jun 2011 09:49
    Last Modified: 09 Jun 2011 09:49
    URI: http://eprints.um.edu.my/id/eprint/1454

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