The electric field modelling of a high voltage bushing with contaminants on the lower porcelain surfaces

D.J. Smith, S.G. McMeekin, B.G. Stewart, P.A. Wallace

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In industry, there have been several documented failures on the lower (oil side) region of high voltage power transformer bushings. In these cases, the failure mode was considered to be due to localised discharges, as a result of
accumulated surface contaminants. Given failure is often catastrophic, it is therefore difficult to establish the exact point of failure. In this paper, a numerical model that simulates the electric field and equipotential distributions for an oil
impregnated paper bushing with contaminants on the lower porcelain surface is presented.
Original languageEnglish
Title of host publicationProceedings of the 2011 Electrical Insulation and Dielectric Phenomena Conference (CEIDP 2011)
PublisherIEEE
Pages555-558
Number of pages4
ISBN (Print)9781457709852
DOIs
Publication statusPublished - 2011

Keywords

  • porcelian insulators
  • electric fields
  • surface contamination
  • conductivity

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    Smith, D. J., McMeekin, S. G., Stewart, B. G., & Wallace, P. A. (2011). The electric field modelling of a high voltage bushing with contaminants on the lower porcelain surfaces. In Proceedings of the 2011 Electrical Insulation and Dielectric Phenomena Conference (CEIDP 2011) (pp. 555-558). IEEE. https://doi.org/10.1109/CEIDP.2011.6232717