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

doi:10.1109/94.590866

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

^*Corresponding author for this work

Kagami Memorial Research Institute for Materials Science and Technology

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

60 Citations (Scopus)

Abstract

The pulsed electroacoustic method (PEA) has been applied to observe space charge formation under ac application (7 kV_pk, 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 language	English
Pages (from-to)	52-57
Number of pages	6
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	4
Issue number	1
DOIs	https://doi.org/10.1109/94.590866
Publication status	Published - 1997

ASJC Scopus subject areas

Electrical and Electronic Engineering

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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.",

author = "Ying Li and Jiro Kawai and Yasumitsu Ebinuma and Yasutaka Fujiwara and Yoshimichi Ohki and Yasuhiro Tanaka and Tatsuo Takada",

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T1 - Space charge behavior under AC voltage in water-treed PE observed by the PEA method

AU - Li, Ying

AU - Kawai, Jiro

AU - Ebinuma, Yasumitsu

AU - Fujiwara, Yasutaka

AU - Ohki, Yoshimichi

AU - Tanaka, Yasuhiro

AU - Takada, Tatsuo

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

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

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