대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2004년도 추계학술대회 논문집 전기물성,응용부문
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- Pages.248-250
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- 2004
실 포설 환경에 노출된 송전용 고분자애자의 평가
Analysis of Polymeric Insulators Exposed to In-service Conditions
- Lee, Sang-Jin (Electric Power Research Lab., LG Cable Ltd.) ;
- Youn, Bok-Hee (Electric Power Research Lab., LG Cable Ltd.) ;
- Bai, Kyoung-Moo (Electric Power Research Lab., LG Cable Ltd.) ;
- Jeon, Seung-Ik (Electric Power Research Lab., LG Cable Ltd.)
- 발행 : 2004.11.05
초록
We have investigated the surface state of 154kV polymeric insulators exposed to in-service conditions for about five years. In order to evaluate surface aging of silicone rubber exposed to real field environments, we used various analytic methods such as contact angle, ATR-FTIR, SEM-EDS. Although contaminants were accumulated on weathershed surface, polymeric insulator has retained its intrinsic surface hydrophocity. In addition, ATR-FTIR confirmed the diffusion layer of a low molecular weight silicone fluid on surface layer and no surface cracking and chalking were Indicated by SEM. Polymeric insulators have still retained their improved pollution performance over porcelain insulators. That will lead to very low frequency of flashovers throughout their useful life, often under contaminated conditions.
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