A Dispatch Model of Annual Generation Plan Considering Seasonal Pumped Storage

As the proportion of renewable energy increases, the regulation ability of the system becomes insufficient. Therefore, how to maintain the power balance and ensure the safety, stability and economic operation of power system is an important topic in the field of power system. In this paper, to achieve power balance on the medium and long-term time scale, an annual generation plan model considering seasonal pumped storage is established. Assuming that the daily operation status of thermal power units remains unchanged, and seasonal pumped storage pumps water and generates power once each day, the generation plan of each type of unit and the scheduling of seasonal pumped storage are formulated. Finally, the model is validated by the XJTU-ROTs 2017 test system with high renewable energy penetration and the results show that seasonal pumped storage is effective in optimizing resource allocation in the power system.