Experimental Investigation of the Breakdown Voltage of CO 2, N 2, and SF 6 Gases, and CO 2 –SF 6 and N 2 –SF 6 Mixtures under Different Voltage Waveforms

Abderrahmane Beroual, Usama Khaled and Mamadou-Lamine Coulibaly
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Abderrahmane Beroual: Ecole Centrale de Lyon, University of Lyon, Ampere CNRS UMR 5005, 36 Avenue Guy Collongue, 69134 Ecully, France
Usama Khaled: Department of Electrical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
Mamadou-Lamine Coulibaly: Ecole Centrale de Lyon, University of Lyon, Ampere CNRS UMR 5005, 36 Avenue Guy Collongue, 69134 Ecully, France

Energies, 2018, vol. 11, issue 4, 1-12

Abstract: This paper is devoted to a comparison study of the breakdown voltage of CO 2 , N 2 , and SF 6 gases, and CO 2 –SF 6 and N 2 –SF 6 mixtures under different voltage waveforms, namely AC, DC, and lightning impulse voltages, in point–plane and sphere–sphere electrode arrangements. The influence of pressure, voltage polarity, and percentage of SF 6 in CO 2 and N 2 were studied, and equivalencies between the breakdown voltage of SF 6 and those of the considered mixtures were analyzed. It is shown that the breakdown voltage of SF 6 is the highest, whatever the applied voltage waveforms. Similarly, for a given voltage waveform, the breakdown voltage of SF 6 is the highest. The AC breakdown voltage is the lowest for all gases. The addition of small amounts of SF 6 to CO 2 and N 2 significantly improved the breakdown voltages of both natural gases. For a given breakdown voltage, the ratio between the pressure of CO 2 to that of SF 6 was generally lower than the pressure of N 2 to SF 6 , whatever the voltage waveforms.

Keywords: nitrogen; carbon dioxide; sulfur hexafluoride; SF 6 gas mixtures; breakdown voltage; DC; AC; lightning impulse voltage; gas pressure; polarity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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