Electrical Engineering College of Zhejiang University, Hangzhou, China
This work is supported by National Key R&amp;D Program of China (No. 2017YFB0902600), State Grid Corporation of China Project (No. SGJS0000DKJS1700840) Research and Application of Key Technology for Intelligent Dispatching and Security Early-warning of Large Power Grid.
For the multiple uncertain risk factors faced by the operation of power grid, this paper analyzes the necessity of risk coordination control from the perspective of the sequential characteristic of risk development and the dispatch mode of power grid. Based on the view point of risk coordination control, a system of risk coordination control for the whole process of power grid operation including medium and short-term, day-ahead, real-time and post-contingency is proposed. The risk optimization models, control measures and coordination strategies in each stage are elaborated in detail. The solution based on a five-tier software framework is proposed and key technologies supporting the system application are discussed. Finally, the preliminary implementation of the whole process risk coordination control system in the Zhejiang Power Grid is introduced. The results of theoretical analysis and engineering practice show that the proposed system and framework in this paper can adapt to the “open, fair and just” power dispatch mode, coordinate the risk control decisions in different stages and realize the step-by-step tracking and rolling control for the operating risk of power grid.