A diagnostic technique to assess the operating state of high voltage apparatus

Author

Bamji, S.S. ; Bulinski, A.T. ; Chen, Y. ; Han, X.

Author_Institution

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

fYear

1994

fDate

5-8 Jun 1994

Firstpage

119

Lastpage

122

Abstract

A subject of considerable interest at the present time is the development of diagnostic techniques to assess the operating state and predict the remaining life of electrical power equipment in service. Such techniques can help to reduce unscheduled outages, improve maintenance planning and increase system reliability. The life of a high voltage apparatus usually depends upon the operating state of its electrical insulation. An analysis of the fundamental dielectric processes has shown that the polarization phenomena are strongly influenced by the morphology and degradation of the polymeric insulation. Hence, the polarization spectrum should yield information on the operating state of the insulation. A technique for measuring the depolarization current after dc charging is described in the present study

Keywords

XLPE insulation; ageing; dielectric polarisation; insulation testing; life testing; power cable insulation; power cable testing; ageing; dc charging; depolarization current; diagnostic technique; electrical insulation; electrical power equipment; fundamental dielectric processes; high voltage apparatus; maintenance planning; operating state; polarization phenomena; polarization spectrum; polymeric insulation; power cable insulation; system reliability; Dielectrics and electrical insulation; Maintenance; Morphology; Plastic insulation; Polarization; Polymers; Power system planning; Reliability; Thermal degradation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1994., Conference Record of the 1994 IEEE International Symposium on

Conference_Location

Pittsburgh, PA

ISSN

1089-084X

Print_ISBN

0-7803-1942-7

Type

conf

DOI

10.1109/ELINSL.1994.401453

Filename

401453