Evaluation of field aged crosslinked polyethylene cables by partial discharge location

Author

Mashikian, M.S. ; Luther, R. ; McIver, J.C. ; Jurcisin, J., Jr. ; Spencer, P.W.

Author_Institution

Connecticut Univ., Storrs, CT, USA

Volume

9

Issue

2

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

620

Lastpage

628

Abstract

Partial discharge sites were located in several field aged crosslinked polyethylene insulated medium voltage power cables, using a newly developed instrument. Subsequent AC breakdown tests indicated that, with partial discharge inception voltages lower than 3 times operating voltage, the failures occurred at the partial discharge sites. In all cases, the failures originated at the sites of long water trees which affected the cables at discrete locations rather than uniformly over their entire lengths. Attributes of a partial discharge locator capable of performing in-situ nondestructive diagnostic tests on cables are discussed and field application procedures are described

Keywords

ageing; cable insulation; electric breakdown of solids; insulation testing; organic insulating materials; partial discharges; power cables; AC breakdown tests; crosslinked polyethylene; field ageing; inception voltages; instrument; long water trees; medium voltage; nondestructive testing; operating voltage; partial discharge location; power cables; Aging; Breakdown voltage; Cable insulation; Instruments; Medium voltage; Partial discharges; Polyethylene; Power cables; Testing; Trees - insulation;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.296237

Filename

296237