This paper introduces a kind of SF

6

electrical paroxysmal leakage fault early warning and recovery technology. The technology can solve SF

6

substation of gas leakage occurs

mixed with the problem of rapid recovery of trace SF

6

in the air. Which include gas leakage monitoring

SF

6

gas decomposition process

moisture

dust in the air

and SF

6

/air separation recovery technology. In this paper

the actual situation of the underground substation solution in detail is given and the control process

for all kinds of underground substation fault gas leak after processing to provide the reference.