In view of the characteristics of the regional power grid

an analysis is made of the problem of long-term quit busbar automatic transfer switches(BATS)in the summer peaks or peak load periods. On this basis

a BATS strategy in real-time online analysis and closed-loop control system based on energy management system(EMS)system is developed. The system gest real-time operational information of the grid from EMS

creates the common model of BATS. The system uses a fast computing method of N-1 fault check in static safety analysis considering BATS

The Checking process takes into full account standby load sharing

action sequence

flow calculation convergence state

state estimation of bad data and other factors. and determines the optimal BATS combination according to a preset priority. After realizing the BATS strategy in real-time online analysis

the BATS closed-loop control using a secondary device remote control techique is achieved. Field application effect shows that the input rate of BATS and power supply reliability in reload transformer substation is dramatically increased.