Through the comparisons and researches of several theories and methods for SF

6

gas leakage detection

high-voltage corona discharge theory is adopted to detect SF

6

gas leakage.According to the function and technical requirements for SF

6

gas leakage monitoring by on-site equipment

the design of on-line monitoring system for SF

6

gas leakage of indoor equipment is realized

and it is used in several substations

which has achieved good results.