Abstract:With the rapid development of the smart grid and further promotion of the control integration operating system, the centralized monitoring information data of electric transmission and transformation equipment connected to the control center has presented the exponential growth. It becomes extremely urgent to dig for information needed from the massive monitoring information data, guide the work of monitors directly and turn the passive monitoring to be active monitoring. State Grid Zhejiang Electric Power Corporation takes the lead in launching the researches and application of the big data of centralized monitoring information of the electric transmission and transformation equipment by aiming at the current status, and establishes an information analysis center comprised by all kinds of monitoring information analysis modules based on the smart grid control technology support system, which will implement the optimized integration and sorted processing of centralized monitoring information by conducting the big data mining analysis through the warning messages of electric transmission and transformation equipment, and improve the daily work efficiency of monitors significantly. In the paper, the overall structure of the centralized monitoring information analytic center of the electric transmission and transformation equipment are introduced generally first. Then the optimization algorithm which is adopted by the system is introduced. Finally, combining the actual operation conditions of Zhejiang power grid, the specific application of various monitoring information analytic modules are implemented, and the analysis result will not only provide corresponding aided decision for the monitors, but also ensure the safe operation of Zhejiang power grid.