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

研究成果: Article査読

60 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)52-57
ページ数6
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
4
1
DOI
出版ステータスPublished - 1997 12 1

ASJC Scopus subject areas

  • 電子工学および電気工学

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