The Analysis and Design of Network and Information Security of Electric Power System

Along with the electric power information network system connecting into the Internet, the network and information securities are getting serious. This paper analyzes the characteristics of the electric power information network system, proposes the information network structure, and designs the security architecture of the electric power information network system. Moreover, the concrete security techniques used in the architecture are introduced in detail such as the security insulation techniques, including the physical insulation technique, the protocol insulation technique, firewall technique, VPN and VLAN technique, the security techniques of the system level, secure design strategy on the application level and other security techniques. Because an electric power system needs to send and receive secret messages frequently, an integrated encryption and digital signature algorithm is designed. These designs have applied to an electric power information network system, it is proved to be secure, reliable and practical