Rejuvenation of retired power cables by heat treatment

Yue Xie, Gang Liu*, Yifeng Zhao, Licheng Li, Yoshimichi Ohki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A possible rejuvenation method of a power cable insulated with cross-linked polyethylene (XLPE) is presented. Samples with the shape of a film with a thickness of about 0.4 mm was peeled from two retired 110 kV cables and their spare cable. First, the peeled samples were annealed at 85, 90, 95 and 100 °C. Then, the differential scanning calorimetric spectrum, DC current, dielectric spectrum, indenter modulus, and dielectric breakdown were measured for these samples. As a result, we found the possibility that the XLPE insulation in the retired cables can be rejuvenated by giving a thermal treatment at a proper temperature, which is around 95 °C for the present cables.

Original languageEnglish
Article number8662254
Pages (from-to)668-670
Number of pages3
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume26
Issue number2
DOIs
Publication statusPublished - 2019 Apr

Keywords

  • DC conduction
  • DSC
  • XLPE
  • cable
  • relative permittivity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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