EVALUATION OF FIELD AGED CROSS-LINKED POLYETHYLENE CABLES BY PARTIAL DISCHARGE LOCATION

Citation
Ms. Mashikian et al., EVALUATION OF FIELD AGED CROSS-LINKED POLYETHYLENE CABLES BY PARTIAL DISCHARGE LOCATION, IEEE transactions on power delivery, 9(2), 1994, pp. 620-628
Citations number
19
Categorie Soggetti
Engineering, Eletrical & Electronic
ISSN journal
08858977
Volume
9
Issue
2
Year of publication
1994
Pages
620 - 628
Database
ISI
SICI code
0885-8977(1994)9:2<620:EOFACP>2.0.ZU;2-G
Abstract
Partial discharge sites were located in several field aged crosslinked polyethylene insulated medium voltage cables, using a newly developed instrument. Subsequent AC breakdown tests indicated that, with partia l discharge inception voltages lower than 3 times operating voltage, t he failures occurred at the partial discharge sites. In all cases, the failures originated at the sites of long water trees which affected t he cables at discrete locations rather than uniformly over their entir e lengths. Attributes of a partial discharge locator capable of perfor ming in-situ non-destructive diagnostic tests on cables are discussed and field application procedures are described.