Abstract
This chapter mainly discusses the wide-area coordination of wind power generation with pumped storage and battery energy storage systems. The pumping and storage power station can bring the static benefits of peak cutting and valley filling. It is also suitable for the wind power plant operation to form a wind storage combined power generation system and smooth the frequency fluctuation of the wind power plant entering the network. In this chapter, the combined output model of wind storage is established and a real-time active power control strategy is proposed for the combined operation system of wind storage. Matlab/Simulink simulation software is used to build the output simulation model of wind storage combined power generation, which can well reduce the frequency fluctuation of wind farm grid connections. Then, the combined optimal operation of wind storage based on the operation characteristics of pumping and storage units is studied. Secondly, considering the wide-area coordination mode of the cluster wind storage system, based on the general operation model of the single wind storage system to expand, put forward the wide-area coordination optimization method of the cluster wind storage system. Finally, this section builds a safe and economic dispatching model for multienergy systems encompassing wind, photovoltaic, cascade hydro, thermal power, and pumped storage, taking into account the uncertainty of wind power and load forecasts, the safety requirements of power grids, and the operational characteristics of different power sources. In addition, a three-stage solution method based on Benders decomposition is employed to decompose the problem into three stages: preprocessing of integer variables, solution of the UC-ED problem, and system feasibility and safety verification, for which an iterative solution is yielded through the generalized Benders cut. The validity of the model and algorithm is verified through an example analysis of the IEEE39 node system and the grid’s real operation data.
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