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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.7 No.5
- 발행연도
- 2012.9
- 수록면
- 765 - 771 (7page)
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초록· 키워드
오류제보하기
SF<SUB>6</SUB> gas has been used as arc quenching and insulating medium for high and extra high voltage switching devices due to its high dielectric strength, its excellent arc-quenching capabilities, its high chemical stability and non toxicity. Despite of its significant contributions, the gas was classified as one of the greenhouse gas in the Kyoto Protocol. Thus, many researches are conducted to find out the replacement materials and to develop the SF<SUB>6</SUB> gas useless electrical equipment. This paper describes experiments on the temperature change-related breakdown characteristics of SF<SUB>6</SUB> gas (SF<SUB>6</SUB>) and SF<SUB>6</SUB> liquid (LSF<SUB>6</SUB>) in a model GIS(Gas-Insulated Switchgear) chamber in order to show the possibility of more stable and safe usages of SF<SUB>6</SUB> gas. The breakdown characteristics are classified into three stages, namely the gas stage of SF<SUB>6</SUB> according to Paschen"s law, the coexisting stage of SF<SUB>6</SUB> gas with liquid in considerable deviation at lower temperature, and the stage of LSF<SUB>6</SUB> and remaining air. The result shows that the ability of the LSF<SUB>6</SUB> insulation is higher than the high-pressurized SF<SUB>6</SUB>. Moreover, it reveals that the breakdown characteristics of LSF<SUB>6</SUB> are produced by bubble-formed LSF<SUB>6</SUB> evaporation and bubbles caused by high electric emission and the corona. In addition, the property of dielectric breakdown of LSF<SUB>6</SUB> is determined by electrode form, electrode arrangement, bubble formation and movement, arc extinguishing capacity of the media, difficulty in corona formation, and the distance between electrodes. The bubble formation and flow separation phenomena were identified for LSF<SUB>6</SUB>. It provides fundamental data not only for SF<SUB>6</SUB> gas useless equipment but also for electric insulation design of hightemperature superconductor and cryogenic equipment machinery, which will be developed in future studies.
목차
Abstract
1. Introduction
2. Experimental Procedue & Method
3. Experimental Results & Discussion
4. Conclusions
Acknowledgements
References
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