NDLI: Improvement in A.C. dielectric breakdown strength of XLPE power cables through diffusing of an additive into the insulation

Content Provider	IEEE Xplore Digital Library
Author	Ishida, M. Hozumi, N. Okamoto, T.
Copyright Year	1988
Description	Author affiliation: Central Research Institute of Electric Power Industry (Ishida, M.)
Abstract	In order to halve the insulation thickness of extra-high-voltage XLPE power cables, verification of methods which improve the dielectric performance through the modification of the semiconducting layer is in progress. As part of these efforts, an additive which was found to be most effective by preliminary experiments was added to the semiconducting layer at various concentrations from 0 to 5% on disc specimens. These specimens were then subjected to A. C. dielectric breakdown tests. The analysis of the Weibull distributions of the breakdown strengths revealed that these breakdown strengths were considerably improved at concentrations from 3 to 5 %. In particular, the 10% Weibull breakdown strength was improved by 50%. Furthermore, the insulation of the specimens were subjected to physical and chemical analyses. It was found that a layer diffused with the additive is formed in the insulation in close proportion to the concentration of the additive, and that the density of the amorphous portion in the insulation increases with its formation.
Starting Page	271
Ending Page	274
File Size	170670
Page Count	4
File Format	PDF
ISBN	4886860419
DOI	10.1109/ISEIM.1988.763491
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-09-26
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectric breakdown Power cables Additives Dielectrics and electrical insulation Electric breakdown Semiconductivity Cable insulation Dielectric materials Semiconductor device breakdown Testing
Content Type	Text
Resource Type	Article

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