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

被引：24

作者：

Suzuki, K ^{[1
]}

Tanaka, Y

Takada, T

Ohki, Y

Takeya, C

机构：

[1] Musashi Inst Technol, Tokyo 158, Japan

[2] Waseda Univ, Tokyo 160, Japan

[3] Tatsuta Elect Wire & Cable Co Ltd, Osaka, Japan

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2001年 / 8卷 / 01期

关键词：

D O I：

10.1109/94.910428

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 distributions at different angle in the insulating wall of a service-aged XLPE coaxial cable, induced by application of a de 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.

引用

页码：78 / 81

页数：4

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