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Impulse Characteristics of Different Gas Mixtures

E. Onal and A. Bilgin
Department of Electrical Engineering, Istanbul Technical University, Istanbul, Turkey

Abstract—This study is concerned with experimental investigation of breakdown characteristics of various gas mixtures under different pressures. Pure N2, %50 SF6+%50 N2, %1 SF6+%99 N2 and %1 SF6+%CO2 gas mixtures are used as insulators. Gas pressures are varied between 1 and 10 bar. Weibull statistical analysis are used for evaluation of experimental data and breakdown characteristics are plotted by using least squares regression. As a result of this analytical assessment, the pressures required for safer protection levels are obtained as 1 bar for %50 SF6+%50 N2, 10 bar for %1 SF6+%99 N2, 5 bar for %1 SF6+%99 CO2 gas mixtures and 10 bar for N2.

Index Terms—gas insulation, weibull probability, sulphur-hexafluoride, time to breakdown

Cite: E. Onal and A. Bilgin, "Impulse Characteristics of Different Gas Mixtures," International Journal of Electrical Energy, Vol. 5, No. 1, pp. 92-95, June 2017. doi: 10.18178/ijoee.5.1.92-95



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