Research on Unified Analysis System for Grid Risk Online Early Warning

The continuous construction of power grid brings up sharp rise in the scale of cross-regional electricity transmission in China. This circumstance highlights the issue of power system risk and security management and control under a "strong DC and weak AC" system structure. With weak reusability and extensibility, the current online security and stability analysis software is not able to integrate and use existing data resources to conduct global analysis for the whole grid. Based on clustered and servitized dispatching and control platform utilizing unified grid data and model, this paper creates a framework of unified analysis system for power grid risk online early warning. The framework realizes unified analysis of grid risk online early warning with shared system data from the entire power grid. By servitizing business scenarios, application functions and the support platform, the system is capable of compositing various functional modules. The solution proposed in this paper solves the problem of independent calculation and enormous work load of stability analysis, and the lack of data sharing and interaction among different dispatching organizations.