The induced charge arising from a partial discharge consists of a component associated with the actual space charge in the void, and one related to changes in the polarization of the bulk dielectric. These changes are brought about by the field produced by the space charge. The influence of the void geometry upon the polarization component of the induced charge is examined for a heterogeneous bulk dielectric system. It is demonstrated that the relative magnitude of this component may either increase or decrease, depending on the ratio of the dielectric permittivities and within which dielectric the void is located. The magnitude of this effect is also dependent upon the prolateness/oblateness of the void geometry and on the orientation of the void.
|Title of host publication||1999 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, IEEE Publication 99CH36319|
|Place of Publication||New York|
|Publication status||Published - 1999|
|Event||Conference on Electrical Insulation and Dielectric Phenomena 1999 - Austin, TX, United States|
Duration: 17 Oct 1999 → 20 Oct 1999
|Conference||Conference on Electrical Insulation and Dielectric Phenomena 1999|
|Period||17/10/1999 → 20/10/1999|
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McAllister, I. W., & Crichton, G. C. (1999). Influence of bulk dielectric polarization and void geometry upon PD transients. In 1999 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, IEEE Publication 99CH36319 (pp. 197-201). IEEE. https://doi.org/10.1109/CEIDP.1999.804625