When the frequency fluctuates, energy storage stations can swiftly respond to the frequency changes in the power system, offering agile regulation capabilities and maintaining system stability [ 10 ]. Thus, the participation of energy storage stations is also crucial for ensuring the safety and stability of operations in the power system [ 11 ].
In addition, by leveraging the scaling benefits of power stations, the investment cost per unit of energy storage can be reduced to a value lower than that of the user’s investment for the distributed energy storage system, thereby reducing the total construction cost of energy storage power stations and shortening the investment payback period.
Through the incorporation of various aforementioned perspectives, the proposed system can be appropriately adapted to new power systems for a myriad of new energy sources in the future. Table 2. Comparative analysis of energy storage power stations with different structural types. storage mechanism; ensures privacy protection.
During the three time periods of 03:00–08:00, 15:00–17:00, and 21:00–24:00, the loads are supplied by the renewable energy, and the excess renewable energy is stored in the FESPS or/and transferred to the other buses. Table 1. Energy storage power station.
Each part of the energy storage power station contributes. The pumped storage system handles relatively slow power fluctuations. Lithium batteries allocate the power portion between high and low frequencies. The supercapacitor mainly takes on the high-frequency part where the frequency change is the fastest.
where is the rated power configured for the energy-type storage system, is the rated power configured for the hybrid-type storage system, is the rated power configured for the power-type storage system, is the charging coefficient of the energy storage, and is the discharging coefficient of the energy storage.
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