Space charge behavior in electrical insulation under high fields

Author

Hozumi, Naohiro

Author_Institution

Central Res. Inst. of Electr. Power Ind., Yokosuka, Japan

fYear

1996

fDate

25-30 Sep 1996

Firstpage

3

Lastpage

8

Abstract

This paper deals with the space charge behavior in polymeric power cable insulations. The purpose of this study has two aspects; one is the development of DC cable, and the other is the development of diagnosis techniques based on the space charge behavior. For this study, a new method that can measure the space charge in cables applying very high voltages was developed. Some interesting results on the change in time of space charges in thick insulation under the fields up to 1 MV/cm were obtained. It was also shown that there is a close relation between the water tree degradation and the space charge in the insulation, and that the space charge behavior is applicable to the diagnosis of power cables

Keywords

insulation testing; organic insulating materials; power cable insulation; power cable testing; space charge; trees (electrical); DC cable; diagnosis techniques; polymeric power cable insulations; power cable diagnosis; space charge behavior; water tree degradation; Charge measurement; Current measurement; Degradation; Dielectrics and electrical insulation; Polymers; Power cable insulation; Power cables; Space charge; Trees - insulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1996. (ISE 9), 9th International Symposium on

Conference_Location

Shanghai

Print_ISBN

0-7803-2695-4

Type

conf

DOI

10.1109/ISE.1996.578028

Filename

578028