The effects of superimposed impulse transients on partial discharge in XLPE cable joint

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Abstract

In practice, cross-linked polyethylene (XLPE) power cables can be subjected to alternating voltage with superimposed impulse transients. Such impulse transients may initiate partial discharges (PD) in insulation defects even below AC inception voltage. An initiated PD may persist under AC, which will cause insulation degradation. This paper investigates the PD behavior in MV XLPE cable accessories under impulse transients. Different scenarios of PD behavior are measured, described and analyzed. Based on the results, the effects of impulse transients on PD are summarized.
Original languageEnglish
Pages (from-to)497-509
Number of pages13
JournalInternational Journal of Electrical Power & Energy Systems
Volume110
DOIs
Publication statusPublished - 2019

Keywords

  • XLPE cable
  • Cable accessories
  • Insulation defects
  • Partial discharge (PD)
  • Impulse transients

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