Rejuvenation of retired power cables by heat treatment

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

    Research output: Contribution to journalArticlepeer-review

    8 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 1

    Keywords

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

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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