Water treeing in service aged cables, experience and evaluation procedure

Author

Steennis, E.F. ; Boone, W. ; Montfoort, A.

Author_Institution

KEMA Lab., Arnhem, Netherlands

Volume

5

Issue

1

fYear

1990

fDate

1/1/1990 12:00:00 AM

Firstpage

40

Lastpage

46

Abstract

Water treeing problems encountered in the Netherlands in some medium-voltage cables prompted in the authors to develop a test with which the degradation of the insulation of extruded cable could be characterized. The test method developed was demonstrated to be effective. It revealed that 20% of the network cables examined were defective and needed replacement. In evaluating the results, it was shown that the water tree susceptibility of some cables can be correlated with specific manufacturers or unknown parameters in their production process. However, it was not possible to attribute the cause of this susceptibility to the cross-linking process, conductor shields, or wet soils alone

Keywords

ageing; cable insulation; electric breakdown of solids; organic insulating materials; polymers; power cables; Netherlands; XLPE insulation; conductor shields; cross-linking process; extruded cable insulation degradation; service aged MV cables; water tree susceptibility; wet soils; Aging; Cable insulation; Conductors; Degradation; Insulation testing; Manufacturing processes; Medium voltage; Production; Soil; Trees - insulation;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.107253

Filename

107253