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Zhouming ZHANG (张洲铭), Zhaorui NI (倪兆瑞), Dengming XIAO (肖登明), Yizhou WU (吴亦舟). Insulation characteristics of triple mixtures of c-C4F8/N2/CO2 under lightning impulse voltage[J]. Plasma Science and Technology, 2018, 20(10): 105405. DOI: 10.1088/2058-6272/aace9d
Citation: Zhouming ZHANG (张洲铭), Zhaorui NI (倪兆瑞), Dengming XIAO (肖登明), Yizhou WU (吴亦舟). Insulation characteristics of triple mixtures of c-C4F8/N2/CO2 under lightning impulse voltage[J]. Plasma Science and Technology, 2018, 20(10): 105405. DOI: 10.1088/2058-6272/aace9d

Insulation characteristics of triple mixtures of c-C4F8/N2/CO2 under lightning impulse voltage

  • This paper has researched the insulation characteristics of 10%c-C4F8/N2/CO2 mixtures under lightning impulse voltage by experiment. It is shown that the positive and negative lightning impulse breakdown voltages of 10%c-C4F8/N2/CO2 gas mixtures rise linearly as the electrode gap distance and gas pressure increase and under the same conditions, the positive lightning impulse breakdown voltage of the gas mixtures is always higher than the negative lightning impulse breakdown voltage. As the gas mixtures have a little higher liquefied temperature than SF6 and the comprehensive GWP is about 5% of SF6, and the positive and negative lightning impulse breakdown voltages can both reach 60% of SF6, 10%c-C4F8/N2/CO2 gas mixtures can be applied as insulation gas in electrical equipment such as C-GIS, GIT, GIL and so on.
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