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

K. Suzuki; Y. Tanaka; T. Takada; Y. Ohki; C. Takeya

doi:10.1109/94.910428

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

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

^*Corresponding author for this work

Kagami Memorial Research Institute for Materials Science and Technology

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	78-81
Number of pages	4
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	8
Issue number	1
DOIs	https://doi.org/10.1109/94.910428
Publication status	Published - 2001 Feb

ASJC Scopus subject areas

Electrical and Electronic Engineering

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title = "Correlation between space charge distribution and water-tree location in aged XLPE cable",

abstract = "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.",

author = "K. Suzuki and Y. Tanaka and T. Takada and Y. Ohki and C. Takeya",

note = "Funding Information: The authors are grateful to Dr. G. Chen of the University of Southampton for his helpful comments and discussion on this paper. The authors wish to express their thanks for the partial financial support from the Ministry of Education, Science, Sports and Culture of Japan (No.10650318 and No.10045051).",

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AU - Suzuki, K.

AU - Tanaka, Y.

AU - Takada, T.

AU - Ohki, Y.

AU - Takeya, C.

N1 - Funding Information: The authors are grateful to Dr. G. Chen of the University of Southampton for his helpful comments and discussion on this paper. The authors wish to express their thanks for the partial financial support from the Ministry of Education, Science, Sports and Culture of Japan (No.10650318 and No.10045051).

PY - 2001/2

Y1 - 2001/2

N2 - 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.

AB - 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.

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

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