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Correlation of accelerated ageing phenomena and long-term cable performance

Correlation of accelerated ageing phenomena and long-term cable performance
Correlation of accelerated ageing phenomena and long-term cable performance

Utilities, cable makers and industry experts generally agree that the results of medium voltage cable qualification testing are a good indication of ultimate cable performance and expected lifetime. Here we focus on the development of a new enhanced cable insulation material for distribution cables. While qualification tests can differentiate poor performing materials from those with superior performance, it will be illustrated that correlating such qualification data to life expectancy is much more complex. The data presented show that the enhancements observed during material development in water treeing behavior and breakdown strength measured in the short-term 30 day laboratory tests led to a moderate 15% improvement in qualification results. However, significantly larger increases in the time-tofailure and characteristic life time of 400% for cables in the ACLT test were recorded. It would be expected that similar enhancements would be achieved for cables under service conditions in the field.

Brigandi, Paul
c5295bae-12b8-43a4-ad82-4e27b6ac40cd
Sutton, Simon
571c7136-1eb6-44e1-8979-ca0829469a6b
Cree, Stephen
c7245838-6876-432d-8af3-c3d4b6b641ec
Brigandi, Paul
c5295bae-12b8-43a4-ad82-4e27b6ac40cd
Sutton, Simon
571c7136-1eb6-44e1-8979-ca0829469a6b
Cree, Stephen
c7245838-6876-432d-8af3-c3d4b6b641ec

Brigandi, Paul, Sutton, Simon and Cree, Stephen (2013) Correlation of accelerated ageing phenomena and long-term cable performance. In 22nd International Conference and Exhibition on Electricity Distribution, CIRED 2013. vol. 2013 (doi:10.1049/cp.2013.0745).

Record type: Conference or Workshop Item (Paper)

Abstract

Utilities, cable makers and industry experts generally agree that the results of medium voltage cable qualification testing are a good indication of ultimate cable performance and expected lifetime. Here we focus on the development of a new enhanced cable insulation material for distribution cables. While qualification tests can differentiate poor performing materials from those with superior performance, it will be illustrated that correlating such qualification data to life expectancy is much more complex. The data presented show that the enhancements observed during material development in water treeing behavior and breakdown strength measured in the short-term 30 day laboratory tests led to a moderate 15% improvement in qualification results. However, significantly larger increases in the time-tofailure and characteristic life time of 400% for cables in the ACLT test were recorded. It would be expected that similar enhancements would be achieved for cables under service conditions in the field.

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More information

Published date: 2013
Venue - Dates: 22nd International Conference and Exhibition on Electricity Distribution, CIRED 2013, Sweden, 2013-06-09 - 2013-06-12

Identifiers

Local EPrints ID: 413235
URI: http://eprints.soton.ac.uk/id/eprint/413235
PURE UUID: 4d7145a6-d73d-4362-b919-336066cbe8cd

Catalogue record

Date deposited: 17 Aug 2017 16:31
Last modified: 06 Oct 2020 23:49

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