Recent Development of Two Alternative Gases to SF 6 for High Voltage Electrical Power Applications

John Owens, Ang Xiao, Jason Bonk, Michael DeLorme and Agnes Zhang
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John Owens: 3M Company, Saint Paul, MN 55144-1000, USA
Ang Xiao: 3M Company, Saint Paul, MN 55144-1000, USA
Jason Bonk: 3M Company, Saint Paul, MN 55144-1000, USA
Michael DeLorme: 3M Company, Saint Paul, MN 55144-1000, USA
Agnes Zhang: 3M China Ltd., Shanghai 200336, China

Energies, 2021, vol. 14, issue 16, 1-12

Abstract: For many years, SF 6 has been the preferred dielectric medium in electrical power applications, particularly in high voltage gas-insulated equipment. However, with the recognition that SF 6 has an extremely long atmospheric lifetime and very high global warming potential, governments have pursued emission reductions from gas-filled equipment. The electrical power industry has responded to this environmental challenge applying SF 6 -free technologies to an expanding range of applications which have traditionally used SF 6 , including gas-insulated switchgear, gas-insulated circuit breakers and gas-insulated lines or bus bars. Some of these SF 6 -free solutions include gas mixtures containing fluorinated compounds that have low climate impact, among them, a fluoronitrile and a fluoroketone developed as 3M™ Novec™ 4710 Insulating Gas and 3M™ Novec™ 5110 Insulating Gas, respectively. Both fluoronitrile and fluoroketone mixtures are successfully used in gas-insulated equipment currently operating on the grid where they reduce greenhouse gas emissions by more than 99% versus SF 6 . This paper reviews these leading components of alternative-gas mixtures with updates on the performance, safety and environmental profiles in electrical power applications.

Keywords: sulfur hexafluoride; SF 6; insulation; dielectric medium; SF 6 -free; SF 6 -alternative; fluoroketone; fluoronitrile (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: 2021
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