Gaseous Dielectrics Research: Possible SF6 Substitutes

摘要

Sulfur hexafluoride (SF6) is currently the most common insulating gas used in enclosed electrical systems. It is, however a potent greenhouse gas and, thus, its use could impart fears of environmental costs, regulations, and restrictions, in spite of its current low levels in the environment. An aspect of this potential problem, namely the search for alternative high-voltage insulants, such as high-pressure gaseous dielectrics (e.g., N2 and N2/SF6 mixtures), is addressed in this paper.