Interpretation of alternative environment-friendly gaseous insulator for SF₆
by Hafiz Shafqat Kharal; Muhammad Kamran; Rahmat Ullah; Sohail Aftab Qureshi
International Journal of Global Warming (IJGW), Vol. 21, No. 3, 2020

Abstract: This work presents the testing of a unique composite gaseous insulating material using comparative evaluations with the properties of existing insulating materials. Main objectives of this research include the investigation of a novel composite insulating material with superior insulating properties, reduced cost, and less environmental hazard. Sulphur hexafluoride (SF₆) is commonly used in current electrical insulation network but having recognised disadvantage of global warming potential (GWP) 23,800 times larger than CO₂. Due to this, it is an urgent need to find alternative of SF₆ which is environment friendly. R₁₂ and its mixture with different concentration of carbon dioxide with varying pressure are tested. Gaseous mixtures containing R₁₂ gas demonstrate good dielectric properties with low-temperature usage possibilities. The insulation properties of SF₆ and R₁₂/CO₂ gas mixtures with other merits and experimental set up are comprehensively discussed in this paper. The experimental study of power frequency breakdown voltage is also analysed for a proposed gaseous mixture of R₁₂/CO₂.

Online publication date: Fri, 24-Jul-2020

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