Energy Storage Capacity Configuration Method Based on Substation Load Characteristics

Energy storage has been widely used in power systems due to its flexible storage and release of electric energy, mainly for improving power supply reliability, peak load shifting, frequency regulation, smooth renewable energy generation fluctuations, and demand side response. Based on the load characteristics of the substation during the peak load period, the energy storage configuration strategy is divided into two scenarios: maintaining a stable substation load rate during the peak load period and peak-shaving of the substation load curve in this paper. Considering the constraints of energy storage charging and discharging efficiency, energy storage charging and discharging capacity, substation load, and energy storage power, the energy storage capacity configuration, and application method is proposed. Then the system peak shaving and valley filling, and power balance adjustment is achieved, and the load characteristics of the substation are optimized. Finally, the practicability and effectiveness of the proposed method are verified by analyzing substation operation data of a real power network.