대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2006년도 추계학술대회 논문집 전력기술부문
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- Pages.141-143
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- 2006
변압기 유중 가스 진단 오차 원인에 대한 연구
A study on Cause of Errors of Dissolved Gases Analysis in Transformer
- Cho, Sung-Min (Soongil Univ) ;
- Lee, Yang-Jin (Soongil Univ) ;
- Kim, Young-Sung (Soongil Univ) ;
- Kim, Jae-Chul (Soongil Univ) ;
- Kweon, Dong-Jin (KEPRI)
- 발행 : 2006.11.03
초록
Dissolved gas analysis (DGA) is widely used to detect incipient faults in oil-filled electrical equipment. KEPCO make a rule of DGA in 1985. They have been diagnosing power transformer using their DGA criteria. In this paper, we analysis the result of DGA data about transformer in the substation. We try to find out what is cause of an error in DGA diagnosis considering accuracy in extracting gases from mineral oil in transformer. The carbon-monoxide was primary reason of warning in DGA data. We specially consider that aging is a cause of generating of carbon-monoxide in power transformer.
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