DocumentCode :
1819179
Title :
Properties of aged oil impregnated paper power capacitor
Author :
Oshi, Tetsuo ; Tsukao, Shigeyuki ; Ishii, Tadashi ; Itahashi, Satoru ; Kamba, Masaru
Author_Institution :
R & D, Tokyo Electr. Power Co., Yokohama, Japan
Volume :
1
fYear :
2003
fDate :
1-5 June 2003
Firstpage :
246
Abstract :
The oil impregnated paper capacitor had been produced until 1982, and most capacitors are operated still. Because the operated years pass 20 years or more, and the troubles occurred in some operated capacitors, the research of the deterioration mechanism and development of diagnosing method for the operated capacitor have been continued. In this paper, the chemical composition of the insulating oil and its chemical deterioration under the high electrical field are investigated, and the accelerated life test is carried out by using the miniature capacitor in order to verify the deterioration mechanism. As the result, it is verified that the wax (deterioration product) is generated from the insulating oil by the high electrical field at the edge of electrodes, and the electrical properties of the capacitor are deteriorated by the wax. In addition the breakdown occurred in the damaged part at the insulating paper. These results lead to construct the flow diagram of the deterioration and breakdown process of the oil impregnated paper capacitor.
Keywords :
ageing; electric breakdown; electrodes; insulating oils; paper; power capacitors; waxes; aged oil impregnated paper; breakdown process; chemical deterioration; deterioration mechanism; electrical field; electrical properties; electrode; insulating oil; insulating paper; oil impregnated paper capacitor; power capacitor; wax; Aging; Chemicals; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Life estimation; Life testing; Oil insulation; Petroleum; Power capacitors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on
ISSN :
1081-7735
Print_ISBN :
0-7803-7725-7
Type :
conf
DOI :
10.1109/ICPADM.2003.1218398
Filename :
1218398
Link To Document :
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