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Accelerated aging test on multiple XLPE MV cables simultaneously to induce water trees

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The objective of this paper is to develop an accelerated ageing test to induce water tree growth which is capable of testing up to ten 10 kV cable samples simultaneously. An existing accelerated ageing method was used as a basis for this project. This method uses a high frequency power supply (3 kHz) to achieve a test duration of 14 days. Modifications were made to this method to allow for multiple samples to be tested simultaneously. A specially designed variable inductor was utilised in a parallel RLC resonance circuit. This resonance circuit limits the current draw from a high frequency high voltage transformer which allows for up to ten sample to undergo the test. Water trees were found in a number of the samples tested. The maximum length and quantity of water trees in each sample was recorded and analysed. A ranking system was used to grade how each cable preformed during the test. The method of using the parallel resonance circuit to limit the current was successful. The accelerated ageing test worked as expected and water trees were detected in tested cable samples.

Original languageEnglish
Title of host publicationProceedings - 2015 50th International Universities Power Engineering Conference, UPEC 2015
PublisherIEEE Computer Society
ISBN (Electronic)9781467396820
DOIs
Publication statusPublished - 30 Nov 2015
Event50th International Universities Power Engineering Conference, UPEC 2015 - Stoke-on-Trent, United Kingdom
Duration: 1 Sep 20154 Sep 2015

Publication series

NameProceedings of the Universities Power Engineering Conference
Volume2015-November

Conference

Conference50th International Universities Power Engineering Conference, UPEC 2015
Country/TerritoryUnited Kingdom
CityStoke-on-Trent
Period1/09/154/09/15

Keywords

  • Accelerated
  • Ageing
  • Cables
  • Medium
  • Resonance
  • Trees
  • Voltage
  • Water
  • XLPE

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