Comparative aging characteristics of oil-impregnated-paper bushings of different thicknesses subjected to switching surges

Author

Pompili, M. ; Mazzetti, C. ; Colla, F. ; Bartnikas, R.

Author_Institution

Dept. of Electr. Eng., Rome Univ., Italy

fYear

2000

fDate

2000

Firstpage

465

Lastpage

468

Abstract

Partial discharge tests of oil-impregnated paper capacitor bushings, subjected to voltage switching surges, indicated that overstressed solid-liquid insulation may recover following an electrical stress-free period. However to ensure long term performance of the insulating system, the elevated stresses arising from the superimposed voltage switching surges must be reduced by an increase in the insulation thickness

Keywords

ageing; bushings; impregnated insulation; insulating oils; insulation testing; paper; partial discharges; power capacitors; surges; capacitor bushings; comparative aging characteristics; different thickness; electrical stress-free period; elevated stresses; kraft paper; long term performance; oil-impregnated-paper bushings; overstressed solid-liquid insulation; partial discharge tests; switching surges; Aging; Capacitors; Dielectrics and electrical insulation; Insulation testing; Insulators; Oil insulation; Partial discharges; Stress; Surges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on

Conference_Location

Anaheim, CA

ISSN

1089-084X

Print_ISBN

0-7803-5931-3

Type

conf

DOI

10.1109/ELINSL.2000.845549

Filename

845549