대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1995년도 하계학술대회 논문집 C
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- Pages.1371-1374
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- 1995
절연유(絶緣油) 열화(劣化)센서 특성(特性) 연구(硏究)
A Study on the characteristics of degradation sensor for insulation oil
- 전영갑 (한국전기연구소) ;
- 선종호 (한국전기연구소) ;
- 강동식 (한국전기연구소) ;
- 주병수 (한국전력공사 기술연구원) ;
- 윤진열 (한국전력공사 기술연구원) ;
- 정상진 (한국전력공사 기술연구원)
- Chon, Y.K. (KERI) ;
- Sun, J.H. (KERI) ;
- Kang, D.S. (KERI) ;
- Joo, B.S. (KEPCO Research Center) ;
- Yoon, J.Y. (KEPCO Research Center) ;
- Chung, S.J. (KEPCO Research Center)
- 발행 : 1995.07.20
초록
It is well known that the degradation of transformer oil conseqently lead to the failure of transformer. This paper discussed the characteristics of the degradation sensor checking transformer oil condition in live line. The degadation sensor is composed of base ring, electrodes and porous ceramic, passed through the transformer oil and checks the transformer oil condition through sensor's leakage current. So it is important to minimize the leakage current of base ring and connection parts. To investigate the leakage current of base ring and connection parts the characteristics of V-T-I and DC 2 KV and other examinations were performed. It is verified that ionized transformer oil caused by the expansion of temperature increases in the leakage current of porous ceramic sensor. It is certification that the leakage current of other parts of porous ceramic is very small(about 2%) compared with the porous ceramic body and it is confirmed that the leakage current in porous ceramic is changed sensitively according to the new oil(NO) and and the degradation oil(DO).
키워드