Comparison breakdown voltage Dichlorotrifluoroethane using N2/CO2 mixtures for new gas insulation material

Abstract

Abstract SF6 gas is gas as a filler material for insulating material in Gas Insulated Switchgear. The Kyoto Protocol issued amendments to limit and reduce the use of SF6 gas in various applications, especially as gas isolation applications in substations because SF6 is gas that contributes to the greenhouse effect, the occurrence of global warming and the cause of the ozone layer depletion. This study investigated the use of CF3CHCl2 gas as a new gas to replace SF6 gas as insulation gas. The use of mixture N2/CO2 gas aimed to reduce the main gas concentrate if it leaked into the air and to reduce the cost of procuring the main gas material. The high voltage test showed that CF3CHCl2 gas mixed with N2/CO2 gas was able to withstand a breakdown voltage of 752-837 kV. The ability to withstand the breakdown voltage of the N2 gas mixture is 9 kV-26.7 kV lower than the CO2 gas mixture. The techno-economic value of the use of CF3CHCl2 gas mixed with N2/CO2 gas gives a cost of 5.18 times cheaper than the cost of procurement SF6 gas. The use of CF3CHCl2 gas mixed with N2 gas gives a cost of 1.01 times more expensive than a cost of the use of CF3CHCl2 gas mixed with CO2. In the future, the priority gas is CF3CHCl2 gas as a new gas material that needs to be considered as a potential alternative gas to replace SF6 gas.