On the computation of electric field and temperature distribution in HVDC cable insulation

Reddy, CC and Ramu, TS (2006) On the computation of electric field and temperature distribution in HVDC cable insulation. In: IEEE Transactions on Dielectrics and Electrical Insulation, 13 (6). pp. 1236-1244.

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Abstract

The paper presents certain aspects of electrical/thermal failure of dc power cables. Closed form theoretical formulations for computing the critical stress and temperature due to an external heat source in the form of a steady current through the conductor is presented. The criticality here implies an unstable state of the dielectric and is shown, more often than not, to be different, from that corresponding to thermal decomposition limits. Formulation and solution of continuity equations under first and second kind boundary conditions taking account of electric stress and temperature-dependent dc conductivity is covered. Using the suggested model, stress and temperature distribution in the body of the insulation can be obtained to a reasonable degree of accuracy.

Item Type:	Journal Article
Publication:	IEEE Transactions on Dielectrics and Electrical Insulation
Publisher:	IEEE
Additional Information:	Copyright 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	08 Aug 2007
Last Modified:	20 Jan 2012 09:23
URI:	http://eprints.iisc.ac.in/id/eprint/11401

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