Abstract:In order to provide a objective and quantified decision guidance for power grid emergency command and dispatch, and effectively reduce the risk of power grid security caused by heavy rainfall and geological disasters，an emergency information system for heavy rainfall and geological disaster was designed based on simplified decision flow. Apply the methods of systems engineering and disaster analysis, this article discussed the design idea, core technology and main function of the emergency information system. Five functions are designed by core technology of meteorological risk model of geological disaster and meteorological risk assessment of power grid equipment. By the functions, decision process were accomplished through power grid evaluation on geological environment factor, dynamic disaster information and static power grid equipment information, and then outputting decision information. By then, we build an integrated power grid emergency system for heavy rainfall and geological disaster information. The system complete information systematization of decision flows including query and monitoring the decision-making factors, giving out decision-making suggestions and releasing decision-making information.