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논문 기본 정보

자료유형
학술저널
저자정보
黃靑虎 (인하대학교) 成許慶 (인하대학교) 許昌洙 (인하대학교)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제57권 제2호
발행연도
2008.2
수록면
245 - 251 (7page)

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Although many studies have been carried out about binary gas mixtures with SF?, few studies were presented about breakdown characteristics of SF?/CF₄ mixtures. At present study the breakdown characteristics of SF?/CF₄ mixtures in non-uniform field was performed. The experiments were carried out under AC voltage and standard lightning impulse (SLI) voltage. Breakdown characteristics were investigated for SF?/CF₄ mixtures when AC voltages and standard lighting impulse voltage was applied in a needle-plane. The needle-plane electrode whose gap distance was 3 ㎜ were used in a test chamber. SF?/CF₄ mixtures contained from 0 to 100% SF? and the experimental gas pressure ranged from 0.1 to 0.5 ㎫. The breakdown characteristics of SF?/CF₄ mixtures in non-uniform field may be influenced by defects like needle-shaped protrusions. In case of slowly rising SLI voltage and AC voltage it is enhanced by corona-stabilization. This phenomena caused by the ion drift during streamer development and the resulting space-charge is investigated. In non-uniform field under negative SLI voltage the breakdown voltage was increase linearly but under positive SLI voltage the breakdown voltage increase non-linearly. The breakdown voltage in needle-plane electrode displayed N shape characteristics for increasing the content of SF? at AC voltage. SF?/CF₄ mixture has good dielectric strength and arc-extinguishing properties than pure SF?. This paper presents experimental results on breakdown characteristics for various mixtures of SF?/CF₄ at practical pressures. We could make an environment friendly gas insulation material with maintaining dielectric strength by combing SF? and CF₄ which generates a lower lever of the global warming effect.

목차

Abstract
1. 서론
2. SF?/CF₄ 가스의 물리적인 특성적용
3. 실험
4. 실험 결과 및 고찰
5. 결론
감사의 글
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