Good results have been obtained after using the short-circuit current limiting measure to pull the middle switch in a 500 kV substation of Central China power grid in 2010. In order to promote this short-circuit current restrictive measure

a fast method to judge the feasibility is generalized by analyzing and summarizing the short-circuit current limiting principle and selection principle. The method combines the fault current limiting effect and system stability and adaptability

the harsh conditions of pulling the middle switch to limit short-circuit current and the limitations on the number of pulling the side switch to limit short-circuit current are set out in the method. Simple and efficient

the method had its use value quickly verified by being applied to limiting the short-circuit current and arranging the operation mode for Central China power grid in 2013.