Space charge behavior under AC voltage in water-treed PE observed by the PEA method

Ying Li, Jiro Kawai, Yasumitsu Ebinuma, Yasutaka Fujiwara, Yoshimichi Ohki, Yasuhiro Tanaka, Tatsuo Takada

    Research output: Contribution to journalArticle

    56 Citations (Scopus)

    Abstract

    The pulsed electroacoustic method (PEA) has been applied to observe space charge formation under ac application (7 kVpk, 50, 0.1 and 0.001 Hz) in water-treed polyethylene samples in order to understand the degradation mechanism of water trees. A system with phase-resolving capability has been developed to measure the space charge distribution at any phase angle of the applied ac voltage. By comparing the observed charge distributions with theoretically predicted ones, it has been shown that the interfacial polarization due to the difference in conductivity between the treed and the regions without trees dominate the space charge behavior. It has become clear that the PEA method can be a powerful nondestructive method for evaluating water tree length.

    Original languageEnglish
    Pages (from-to)52-57
    Number of pages6
    JournalIEEE Transactions on Dielectrics and Electrical Insulation
    Volume4
    Issue number1
    DOIs
    Publication statusPublished - 1997

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    Electric space charge
    Charge distribution
    Electric potential
    Water
    Polyethylenes
    Polarization
    Degradation

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Space charge behavior under AC voltage in water-treed PE observed by the PEA method. / Li, Ying; Kawai, Jiro; Ebinuma, Yasumitsu; Fujiwara, Yasutaka; Ohki, Yoshimichi; Tanaka, Yasuhiro; Takada, Tatsuo.

    In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 4, No. 1, 1997, p. 52-57.

    Research output: Contribution to journalArticle

    Li, Ying ; Kawai, Jiro ; Ebinuma, Yasumitsu ; Fujiwara, Yasutaka ; Ohki, Yoshimichi ; Tanaka, Yasuhiro ; Takada, Tatsuo. / Space charge behavior under AC voltage in water-treed PE observed by the PEA method. In: IEEE Transactions on Dielectrics and Electrical Insulation. 1997 ; Vol. 4, No. 1. pp. 52-57.
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    AU - Li, Ying

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    AU - Ebinuma, Yasumitsu

    AU - Fujiwara, Yasutaka

    AU - Ohki, Yoshimichi

    AU - Tanaka, Yasuhiro

    AU - Takada, Tatsuo

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