A Cross-Security Zone Data Transmission Technology for IT Operation and Maintenance Cockpit System in Smart Grid

Aiming at the issues of application oriented and business separation of the traditional IT operation and maintenance system, an IT operation and maintenance cockpit system is proposed for smart grid, and multi-level system architecture is established. To solve the cross-security zone data integration of cockpit in the secondary security protection system, a cross-security zone data transmission method based on service agent is proposed, the key technologies used including virtual tunnel, dynamic load balancing of the cross-security zone data transmission via multiple physical isolation devices, service agent of intranet and internet are illustrated. The experimental results show that the proposed method is efficient for cross-security zone large data transmission of IT operation and maintenance cockpit system.