电负性混合气体绝缘取代SF_6的可能性

电负性混合气体耐电强度的常用计算式,只适用于实验室中小面积的光滑电极。分析表明,SF_6混合气体对电极表面缺陷不象纯SF_6那样敏感。实验和分析均表明,在SF_6中添加少量的其他电负性气体和适当的缓冲气体,可以获得价廉的高耐电强度的混合气体。但适用于工业装置的理想缓冲气体还有待进一步寻找。

Possibility of Replacing SF_6 Insulation by Electro-negative Gas Mixturees

The expressions widly used for calculating dielectric strengths of electro-negative gas mixtures are applicable only to the small smooth electrodes prepared in laboratory conditions. In this paper an analysis is given to show that electro-negative gas mixtures are not so sensitive to electrode defects. Therefore,it is possible that the gas mixtures may be used as a substitute of SF6 in the industrial application where electrode surface roughness is unavoidable.