According to the actual needs of important users in the power grid of large central city about power supply reliability

the state-of-the-art of the existing management system for security and stability control devices is analyzed. By using the resource advantage that the adjustable range of the existing management system covers low voltage users

a function design method of load shedding risk monitoring for security and stability control devices is proposed. Thus the application function of management system of security and stability control devices is extended from conventional monitoring management to on-line early warning of load shedding risks

decision-making support

and remote control. Finally

the actual application of the function in Guangzhou power grid is described.