不均匀电场下CF<sub>3</sub>I/N<sub>2</sub>混合气体工频击穿特性试验

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Abstract The paper discussed the possibility of CF₃I/N₂ gas mixtures an alternative to SF₆ used in gas-insulated equipment, from the point of the power frequency puncture voltage performance. The influence of gas pressure, mixing ratio and gap distance on power frequency puncture voltage of the CF₃I/N₂ gas mixtures was studied through power frequency puncture tests. The power frequency puncture voltage of the CF₃I/N₂ gas mixtures was comparatively analyzed with SF₆/N₂ gas mixtures. The paper proposed a quantitative analysis method using the C value to determine the type and strength of gas mixture synergism. The results show that power frequency puncture voltage performance of CF₃I/N₂ gas mixtures is gradually approaching to SF₆ with the increase of the mixing ratio and gas pressure. CF₃I/N₂ gas mixtures in relative high pressure have higher application potential. The power frequency puncture voltages of CF₃I/N₂ gas mixtures presentpositive synergistic effect. Furthermore, CF₃I gas has excellent insulating recovery property. Considering the power frequency puncture voltage performance, liquefaction temperature and environmental impacts, CF₃I/N₂ (The content of CF₃I is 20%~50%) gas mixtures may replace SF₆ gas for gas-insulated equipment in certain situations.

Key words： CF3I/N2 gas mixture power frequency puncture voltage alternative gases synergistic effect liquefaction temperature

Received: 17 December 2014 Published: 01 November 2016

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TM835

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	Articles by authors
	Xiao Song
	Zhang Xiaoxing
	Han Yefei
	Dai Qiwei

Cite this article:

Xiao Song,Zhang Xiaoxing,Han Yefei等. Experiment on Power Frequency Puncture of CF₃I/N₂Gas Mixtures in Non-Uniform Electric Fields[J]. Transactions of China Electrotechnical Society, 2016, 31(20): 228-236.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I20/228

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