Space charge distribution measurements in XLPE and EPR subjected to a uniform DC field

Author

Dakka, M. Abou ; Bulinski, A. ; Bamji, S.

Author_Institution

Nat. Res. Council of Canada, Ottawa, Ont., Canada

fYear

1999

fDate

1999

Firstpage

63

Lastpage

66

Abstract

Space charge distributions in crosslinked polyethylene (XLPE) and ethylene propylene rubber (EPR) subjected to dc fields of ~25 and 50 kV/mm in a dry environment at room temperature is investigated. To simulate the insulation of high voltage cable, the specimens were equipped with semicon electrodes. Aging with dc field generates considerably more space charge in EPR than in XLPE and the local electric stresses associated with the accumulated space charge can be significant. EPR develops heterocharge at both stress levels whereas XLPE develops heterocharge at the lower but homocharge at the higher stress

Keywords

XLPE insulation; ethylene-propylene rubber; space charge; XLPE; aging; crosslinked polyethylene; dry environment; ethylene propylene rubber; heterocharge; high voltage cable; homocharge; insulation; room temperature; space charge distribution; uniform DC field; Cable insulation; Charge measurement; Current measurement; Paramagnetic resonance; Polyethylene; Rubber; Space charge; Stress; Temperature distribution; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-5025-1

Type

conf

DOI

10.1109/ISE.1999.831822

Filename

831822