대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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열 열화에 따른 유입절연지의 화학적 특성

Chemical Properties of Insulation Paper in oil after Thermal Aging

  • Kim, Pil-Hwan (Dept. of Electrical Engineering, Chung-nam Univ) ;
  • Kim, Jae-Hoon (Dept. of Electrical Engineering, Chung-nam Univ) ;
  • Kim, Ju-Han (Dept. of Electrical Engineering, Chung-nam Univ) ;
  • Lee, Won-Yeong (Dept. of Electrical Engineering, Chung-nam Univ) ;
  • Han, Sang-Ok (Dept. of Electrical Engineering, Chung-nam Univ)
  • 발행 : 2004.11.12
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초록

It is caused that insulation paper, which had got a lot of thermal stress by over-load after installation, should have been deteriorated in electrical and mechanical characteristics. Beside, insulation material is decreased the insulating property and accelerated aging of them in case of dielectric loss when transformers are manufactured with some moisture or transformers would have been them because of moisture-permeation. Therefore, in this study we experienced the influence of moisture content in case of the thermal aged insulation paper. we have measured tan 6 and breakdown voltage in the ratio of paper' moisture content before the aging and then taken the same tests again after insulation paper thermally accelerating-aged. There is a purpose to gain data for a life-design and to establish aging mechanism in order to continuously study life expectancy of the insulation paper

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