Title :
Behavior of an oil-paper interface in presence of carbon particle contamination
Author :
Vincent, Claire ; Trinh, N. Giao ; Olivier, Ronald ; Aubin, Jacques
Author_Institution :
IREQ, Varennes, Que., Canada
Abstract :
The behavior of an oil-paper interface in the presence of carbon particle contamination was investigated under AC voltage. Influenced by an electric field perpendicular to the interface, the carbon particles are deposited on and firmly fixed to the paper surface. This constitutes an excellent means of reproducing particle contamination at the oil-paper interface, since it duplicates the particle-deposition mechanism in power equipment. Field deposition of carbon contamination was found to be reproducible and easy to obtain. On the other hand, a field parallel to the oil-paper interface tends to remove the contamination from the pressboard. The cleaning effect is sufficient to rapidly restore the dielectric performance of a carbon-contaminated oil-paper interface
Keywords :
carbon; composite insulating materials; composite material interfaces; insulating oils; insulator contamination; paper; AC voltage; carbon particle contamination; cleaning; dielectric performance; electric field; field deposition; oil-paper interface; power equipment; pressboard; Breakdown voltage; Contamination; Dielectrics; Electric breakdown; Electric fields; Electrodes; Insulators; Petroleum; Power transformer insulation; Testing;
Conference_Titel :
Electrical Insulation, 1994., Conference Record of the 1994 IEEE International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-1942-7
DOI :
10.1109/ELINSL.1994.401400
