Research on the Strategy of Energy Storage System Participating in the Secondary Frequency Regulation of Power Grid Based on Fuzzy Control

The continuous development of science and technology has led to great changes in the demand for loads in the power system, placing higher demands on the grid for frequency regulation. The disadvantages of traditional FM generators such as slow response speed and dead zone in frequency modulation are becoming more and more prominent. However, the energy storage system has timely tracking, reversible charging and discharging, and rapid output. The auxiliary grid frequency modulation through the energy storage system helps to maintain the active power balance of the power system, improve and increase power. The frequency adjustment capability of the system provides reliable support for the safe and efficient operation of the power system. This paper first analyses the mechanism of secondary frequency regulation of energy storage assisted power grid and establishes an equivalent model of secondary frequency regulation of thermal power units assisted by energy storage system. In addition, an energy storage system-assisted grid secondary frequency regulation control strategy based on double-layer fuzzy control is designed to address the shortcomings of the existing energy storage assisted grid frequency regulation control strategy. Finally, the simulation analysis of the frequency regulation effect is carried out to verify the rationality and effectiveness of the proposed control strategy.