Diagnosis method for fault of dissolved gas in transformer oil

Huadian Technology ›› 2011, Vol. 33 ›› Issue (9): 67-68.

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Diagnosis method for fault of dissolved gas in transformer oil

LIU Dahai1, HAN Dong1, ZHANG Hang1, ZHANG Cong2, WANG Zhenyue1

1.Xuji Electric Corporation Limited, Xuchang 461000, China; 2.Luohe Power Supply Company, Luohe 462000, China

Received:1900-01-01 Revised:1900-01-01 Published:2011-09-25

Abstract

Abstract: In order to enhance the accuracy of analysis and diagnosis on dissolved features gas in transformer oil, combining with fuzzy theory and advanced genetic algorithm, the fuzzy processing on the gas ratio boundary and fault codes of the improved IEC three ratio method was carried out; then the fuzzy inference was used to obtain the fault diagnosis result. This method can reduce the influence of other interfering gases on the diagnosis result greatly, enhance the accuracy of chromatographic analysis of the dissolved gas in transformer oil, and enhance the operation reliability of the transformer insulating oil.

Key words: transformer, IEC three ratio method, fuzzy theory, genetic algorithm

LIU Dahai;HAN Dong;ZHANG Hang;ZHANG Cong;WANG Zhenyue. Diagnosis method for fault of dissolved gas in transformer oil[J]. Huadian Technology, 2011, 33(9): 67-68.

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Diagnosis method for fault of dissolved gas in transformer oil

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