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Plasma Sci. Technol. ›› 2018, Vol. 20 ›› Issue (10): 105405.doi: 10.1088/2058-6272/aace9d

• Low Temperature Plasma • Previous Articles     Next Articles

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

Zhouming ZHANG (张洲铭)1, Zhaorui NI (倪兆瑞)1, Dengming XIAO (肖登明)1,3 and Yizhou WU (吴亦舟)2   

  

  1. 1 Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200030, People’s Republic of China 
    2 Michigan-Shanghai Jiaotong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
  • Received:2018-03-29 Published:2018-06-22
  • Supported by:

    This work was supported by National Natural Science Foundation of China (No. 51337006).

Abstract:

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.

Key words: SF6 alternative, insulation characteristics, lightning impulse voltage, c-C4F8 gas mixtures