Modelling of electric field distributions on cable termination defects under DC plus ripples

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Abstract

Cross-linked polyethylene (XLPE) cables are widely employed in high voltage transmission and medium voltage (MV) distribution networks due to the ease and low cost of forming the XLPE. However, defects in XLPE cable accessories such as joints and terminations will increase the local electric field and produce electrical discharges that erode the cable insulation and eventually result in the insulation failure. This paper develops finite element models to simulate small semicon tip defects at cable terminations and their resulting electric field distortion under MVDC stress voltage plus low frequency ripples. The influences of semicon tip lengths, ripple content and cable temperature gradients on electric field distributions are investigated to understand the electric field distortion surrounding semicon tip defects in relation to practical operation of MVDC XLPE cables.
Original languageEnglish
Title of host publicationProceedings of 2023 IEEE Electrical Insulation Conference (EIC)
Place of PublicationPiscataway, N.J.
PublisherIEEE
Number of pages4
ISBN (Electronic)9781665493413
DOIs
Publication statusPublished - 14 Jul 2023
EventIEEE DEIS 2023 Electrical Insulation Conference - Quebec City Convention Centre, Quebec, Canada
Duration: 18 Jun 202321 Jun 2023

Conference

ConferenceIEEE DEIS 2023 Electrical Insulation Conference
Abbreviated titleEIC 2023
Country/TerritoryCanada
CityQuebec
Period18/06/2321/06/23

Keywords

  • cross-linked polyethylene cable
  • electric field
  • finite element model
  • medium-voltage DC
  • ripple
  • semicon tip defect

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