Title :
Partial discharge degradation and breakdown studies in polypropylene films
Author :
Thomas, Benny ; Nema, R.S.
Author_Institution :
Dept. of High Voltage Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
Internal partial discharge characteristics are investigated on impregnated polypropylene films containing artificial cavity of well-defined dimensions, immersed in oil. Electrical breakdown studies are carried out at step-wise rising stress to evaluate constants of inverse power law model. Partial discharge pulse distribution patterns are acquired using PC interfaced multichannel analyser and statistical analysis of the discharge pulse spectrum is done by using 3-parameter Weibull distribution function. The results are compared with that for unimpregnated samples in air
Keywords :
Weibull distribution; composite insulating materials; computerised instrumentation; organic insulating materials; partial discharges; polymer films; pulse height analysers; statistical analysis; 3-parameter Weibull distribution function; PC interfaced multichannel analyser; artificial cavity; breakdown studies; impregnated polypropylene films; inverse power law model; partial discharge degradation; pulse distribution patterns; statistical analysis; step-wise rising stress; unimpregnated samples; Degradation; Electric breakdown; Electrodes; Partial discharge measurement; Partial discharges; Pattern analysis; Petroleum; Pulse amplifiers; Stress; Voltage;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549397
