NDLI: Electric field computation in wet cable insulation using finite element approach

Content Provider	IEEE Xplore Digital Library
Author	Elayyan, H.S.B. Abderrazzaq, M.H.
Copyright Year	1994
Abstract	Accurate assessment of cable insulation conditions can be achieved by implementing advanced diagnostic and simulation techniques that assist the measurement and monitoring of the properties related to aging and failure of the insulation system. It is well recognized that the electric field distribution is the dominant factor in the initiation of degradation process in the insulation system. In such a system, and due to the presence of pollutants such as water or moisture, local field enhancement occurs resulting in field stress values enough to cause local breakdown of the insulation. The finite element simulation technique is used to evaluate the electric field inside the power cable. A model that illustrates the water-dielectric interface within the cable insulation system is proposed. The difficulties associated with the building of such a model, which contains elliptically shaped water particles and unusually configured insulation areas, are illustrated. Finally, the link between the local field concentration in the vicinity of water particles and the possibility of insulation failure, which can be developed to a complete breakdown, is discussed.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
Starting Page	1125
Ending Page	1133
Page Count	9
File Size	1088882
File Format	PDF
ISSN	10709878
Volume Number	12
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cable insulation Finite element methods Electric breakdown Power system modeling Computational modeling Pollution measurement Condition monitoring Aging Degradation Dielectrics and electrical insulation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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