In order to ensure safety of operating personnel in live working

we calculated and analyzed potential shift transient energy of AC above 750 k V and DC ±660 and ±800 k V transmission lines

and performed experimental study of conductive gloves discharge. The results of theoretical and testing study indicate that

when the energy of the system of discharge is 1.37 J

with the root segment of electric arc acting on the conductive glove

the conductive glove will be broken

and electric arc will do harm to operating personnel. Considering safety margin of actual operation

in regulated distance of potential shift

when the transient energy of AC above 750 k V and DC ±660 and ±800 k V transmission lines is larger than 1.0 J

a potential shift rod is required to transfer the potential to insure operating personnel safety protection against live working potential shift.