Correlation between space charge distribution and water-tree location in aged XLPE cable

K. Suzuki, Y. Tanaka, T. Takada, Y. Ohki, C. Takeya*

*この研究の対応する著者

研究成果: Article査読

24 被引用数 (Scopus)

抄録

The correlation between charge distribution in an aged crosslinked polyethylene (XLPE) cable and the location of water trees has been studied. The space charge radial distribution at different angle in the insulating wall of a service-aged XLPE coaxial cable, induced by application of a dc stress, were measured using the pulsed electroacoustic (PEA) method. Furthermore, a cross section of sliced insulating wall was observed with an optical microscope to compare with the radial space charge distribution. The cable under investigation was electrically aged in service at 6.6 kV ac for 25 years in wet conditions. Water trees were found at the position in which space charge was observed. On the other hand, no water tree was found at the position in which the space charge was not observed. Judging from these results, the space charge measurement seems to be useful for the diagnosis of water trees in aged cables.

本文言語English
ページ(範囲)78-81
ページ数4
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
8
1
DOI
出版ステータスPublished - 2001 2月

ASJC Scopus subject areas

  • 電子工学および電気工学

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