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Content Provider | IEEE Xplore Digital Library |
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Author | Zainuddin, H. Lewin, P.L. Mitchinson, P.M. |
Copyright Year | 2011 |
Description | Author affiliation: The Tony Davies High Voltage Laboratory, University of Southampton, SO17 1BJ, United Kingdom (Zainuddin, H.; Lewin, P.L.; Mitchinson, P.M.) |
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 non-homogeneous 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. |
Starting Page | 1 |
Ending Page | 4 |
File Size | 987234 |
Page Count | 4 |
File Format | |
ISBN | 9781424473526 |
ISSN | 21533725 |
e-ISBN | 9781424473557 |
e-ISBN | 9781424473540 |
DOI | 10.1109/ICDL.2011.6015422 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-06-26 |
Publisher Place | Norway |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Mathematical model Space charge Ions Impurities Equations Power transformers Conductivity physicochemical reaction electric double layer oil-pressboard interface |
Content Type | Text |
Resource Type | Article |
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