Behaviors of space charge in polyethylene sheet with water tree

Author

Li, Ying ; Kawai, Jiro ; Ebinuma, Yasumitsu ; Fujiwara, Yasutaka

Author_Institution

Showa Electr. Wire & Cable Co. Ltd., Kawasaki, Japan

fYear

1995

fDate

17-20 Sep 1995

Firstpage

149

Lastpage

152

Abstract

The pulsed electroacoustic method has been successfully applied to measuring space charge under AC application in polyethylene samples degraded by water trees. It has been shown that the ion polarization in the moist sample is dominated by the quick response of space charge profiles in comparison with the dry sample, in which the rate of space charge accumulation exhibited a relatively slow response. Further effort is required to complete the study on space charge phenomena under AC application not only in laboratory-aged sheet samples but also in field-aged power cables used in real power transmission systems

Keywords

polyethylene insulation; space charge; trees (electrical); AC voltage; electrical stress; hydrophobic polymeric insulator; ion polarization; moisture; polyethylene sheet; pulsed electroacoustic method; space charge; water tree; Charge measurement; Current measurement; Degradation; Laboratories; Polarization; Polyethylene; Pulse measurements; Pulsed electroacoustic methods; Space charge; Trees - insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 1995. International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-88686-047-8

Type

conf

DOI

10.1109/ISEIM.1995.496530

Filename

496530