On Security Information Interaction Model of Smart Grid Emergency System

Through monitoring the running status of components such as hardware, network, database, middleware in grid information system platform, the smart grid emergency system can quickly locate faults and issue response scripts to repair the faults automatically. If status data detected by the system are tampered with or deleted during query and transmission, or the emergency response scripts issued by the system are tampered with or deleted during transmission, it will cause abnormity or faults of the grid information system, resulting in an enormous loss to power grid. However, in this paper, the authors proposed a new security information exchange model of smart grid emergency system and introduced a security protocol for information exchange. Moreover, having analyzed security and efficiency of the protocol, the authors find that it is able to locate system faults in time and repair them independently on the basis of protecting privacy of system status information and response script information.