DocumentCode
1146234
Title
Thermal stability of a defect-tolerant dielectric
Author
Boggs, Steven A.
Author_Institution
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
Volume
9
Issue
3
fYear
1994
fDate
7/1/1994 12:00:00 AM
Firstpage
1459
Lastpage
1465
Abstract
This paper investigates the power frequency, highly inhomogeneous field properties of a dielectric for which the conductivity is an exponential function of the electric field. Oil-paper constitutes the best known example of such a system. Based on solutions to Poisson´s equation with field-dependent conductivity and time-dependent voltage, the paper concludes that such a dielectric could be defect-tolerant (electrically and thermally stable in spite of a defect) for reasonable defects geometries
Keywords
composite insulating materials; dielectric properties of solids; electric fields; electrical conductivity of solids; paper; thermal analysis; Poisson´s equation; conductivity; defect-tolerant dielectric; defects geometries; electric field; electric stability; field-dependent conductivity; floating stress enhancement; highly inhomogeneous field; oil-paper; power frequency field; thermal stability; time-dependent voltage; Dielectric losses; Electrodes; Materials science and technology; Poisson equations; Solids; Stress; Thermal conductivity; Thermal engineering; Thermal stability; Voltage;
fLanguage
English
Journal_Title
Power Delivery, IEEE Transactions on
Publisher
ieee
ISSN
0885-8977
Type
jour
DOI
10.1109/61.311224
Filename
311224
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