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Modeling the Inter-phase Region of High Voltage Transformers

Modeling the Inter-phase Region of High Voltage Transformers
Modeling the Inter-phase Region of High Voltage Transformers
In large oil-filled power transformers, pressboard and paper in conjunction with oil are used throughout to provide electrical insulation. Microscopic views have shown that pressboard insulation is a fibrous and porous structure with a non-homogeneous surface. The porosity of pressboard can result in impurities within the oil being drawn into the oil-impregnated pressboard. The material properties and geometry of pressboard thus lead to a complex oil-pressboard interface. A 2-D model of oil-pressboard interface considering the porous and nonhomogeneous of pressboard has been constructed using Finite Element Analysis software, COMSOL Multiphysics. This paper discusses the mathematical equations used to study the electric double layer (EDL) at the oil-pressboard interface where the oil is in a stationary condition. Subsequently, the simulation results of non-equilibrium charge density profile at the interface are also presented.
978-82-594-3525-5
CD-ROM
Zainuddin, H
c9e0665b-ea0b-4a65-9f53-49d90f66cd8c
Lewin, P L
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Mitchinson, P M
9de2f4d4-38fb-466b-94c6-c4390a6b2aa8
Zainuddin, H
c9e0665b-ea0b-4a65-9f53-49d90f66cd8c
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Mitchinson, P M
9de2f4d4-38fb-466b-94c6-c4390a6b2aa8

Zainuddin, H, Lewin, P L and Mitchinson, P M (2011) Modeling the Inter-phase Region of High Voltage Transformers. 17th IEEE International Conference on Dielectric Liquids, Trondheim, Norway. 25 - 29 Jun 2011. CD-ROM .

Record type: Conference or Workshop Item (Paper)

Abstract

In large oil-filled power transformers, pressboard and paper in conjunction with oil are used throughout to provide electrical insulation. Microscopic views have shown that pressboard insulation is a fibrous and porous structure with a non-homogeneous surface. The porosity of pressboard can result in impurities within the oil being drawn into the oil-impregnated pressboard. The material properties and geometry of pressboard thus lead to a complex oil-pressboard interface. A 2-D model of oil-pressboard interface considering the porous and nonhomogeneous of pressboard has been constructed using Finite Element Analysis software, COMSOL Multiphysics. This paper discusses the mathematical equations used to study the electric double layer (EDL) at the oil-pressboard interface where the oil is in a stationary condition. Subsequently, the simulation results of non-equilibrium charge density profile at the interface are also presented.

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More information

Published date: 26 June 2011
Additional Information: Event Dates: 26 -30 June 2011
Venue - Dates: 17th IEEE International Conference on Dielectric Liquids, Trondheim, Norway, 2011-06-25 - 2011-06-29
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272566
URI: http://eprints.soton.ac.uk/id/eprint/272566
ISBN: 978-82-594-3525-5
PURE UUID: 594f04b9-86f0-4785-ad1a-2788113f814a
ORCID for P L Lewin: ORCID iD orcid.org/0000-0002-3299-2556

Catalogue record

Date deposited: 12 Jul 2011 14:44
Last modified: 03 Dec 2021 02:34

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Contributors

Author: H Zainuddin
Author: P L Lewin ORCID iD
Author: P M Mitchinson

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