Networking Architecture and Key Technologies of Flat Security and Stability Control System

Security and stability control system (SSCS) is the second defense line of power system. In ultra-large scale power grid, the existing SSCS adopts multi-level vertical configuration, which has problems such as poor coordination, weak dynamic redundancy and backup, and high failure risk. In order to ensure the secure and stable operation of super large scale power grid, this paper optimizes its topological structure and operation mechanism according to the development trend of power grid and the failure risk of stability control system. A flat SSCS is proposed and its system architecture and communication networking technology are introduced in details, as well as a specific design example. Finally, the paper summarizes the technical challenges of flat SSCS and puts forward some solutions.