Conference paper
Influence of bulk dielectric polarization and void geometry upon PD transients
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.
Language: | English |
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Publisher: | IEEE |
Year: | 1999 |
Pages: | 197-201 |
Proceedings: | Conference on Electrical Insulation and Dielectric Phenomena 1999 |
ISBN: | 0780354141 and 9780780354142 |
Types: | Conference paper |
DOI: | 10.1109/CEIDP.1999.804625 |
Boundary conditions Dielectrics Geometry Laplace equations PD transients Partial discharges Permittivity Poisson equations Polarization Power engineering and energy Space charge bulk dielectric polarization dielectric permittivity dielectric polarisation heterogeneous bulk dielectric system induced charge oblateness partial discharge partial discharges permittivity polarization component prolateness space charge void geometry voids (solid)