Title :
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
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;
Conference_Titel :
Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-5931-3
DOI :
10.1109/ELINSL.2000.845549
