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

doi:10.1109/CEIDP.2011.6232717

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 language	English
Title of host publication	Proceedings of the 2011 Electrical Insulation and Dielectric Phenomena Conference (CEIDP 2011)
Publisher	IEEE
Pages	555-558
Number of pages	4
ISBN (Print)	9781457709852
DOIs	https://doi.org/10.1109/CEIDP.2011.6232717
Publication status	Published - 2011

Keywords

porcelian insulators
electric fields
surface contamination
conductivity

Documents and Links

10.1109/CEIDP.2011.6232717

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Cite this

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

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 ofaccumulated 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 oilimpregnated paper bushing with contaminants on the lower porcelain surface is presented.",

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The electric field modelling of a high voltage bushing with contaminants on the lower porcelain surfaces. / Smith, D.J.; McMeekin, S.G.; Stewart, B.G.; Wallace, P.A.

Proceedings of the 2011 Electrical Insulation and Dielectric Phenomena Conference (CEIDP 2011) . IEEE, 2011. p. 555-558.

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

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N2 - 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 ofaccumulated 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 oilimpregnated paper bushing with contaminants on the lower porcelain surface is presented.

AB - 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 ofaccumulated 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 oilimpregnated paper bushing with contaminants on the lower porcelain surface is presented.

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KW - surface contamination

KW - conductivity

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DO - 10.1109/CEIDP.2011.6232717

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