Foundation platform based on electric power dispatching system, EMS, DMS, SCADA system, integrated access load analysis, failure analysis, reactive power balance, energy balance and static state security analysis and calculation of grid online real-time security checking system, realize the negative power load forecasting and evaluation of the bottleneck, changes in load forecast of existing calculation work mode, Improve the correctness and security of the actual operation of the power grid, prevent the power grid accidents caused by load access; Enhance the power grid dispatch personnel to grasp the operation state information, and provide decision support for the power dispatch system.