A Power System Time-series Production Simulation Method for Realizing Cross-cycle Coordination of Energy Storage

With the improvement of new energy grid-connected capacity, the application of diversified electric energy storage and the development of P2X loads, the power system in northern China is gradually evolving into a new form in which a high proportion of new energy sources and a high proportion of energy storage coexist and the interaction between sources, loads and storage operates in the future. This paper takes this system as an object and constructs a production simulation model based on the idea of optimal scheduling in order to effectively reflect the coordinated and interactive balance law of this power system in the multidimensional perspective of source-load-storage; in order to solve the huge variables problem in the optimization model which are difficult to be solved in the long-cycle simulation, a simplified calculation method is adopted which is time-periodic rolling and spatial aggregation of similar equipment;in order to realize the cross-cycle new energy consumption of electric energy storage problem during rolling calculation in sub-cycle, the solution strategy of converting the end-of-period storage energy of electric energy storage into calculated coal consumption into the objective function is proposed, and the coordinated operation of electric energy storage in multi-scenarios is realized by setting the conversion coefficients. The studies on northern China provincial power system verify the effectiveness of the method in this paper.