Optimal Configuration of the User Side Energy Storage With Multiple Values Considering Frequency Regulation

Energy storage has the ability of fast and flexible bi-directional power regulation, which can change the traditional power system's attribute of instant balance. At present, the energy storage application is still in an initial stage, so it is necessary to study how to get the best out of the multiple values of energy storage in the power system to improve its economy. This paper studies an optimal configuration method of the user-side energy storage with multiple values considering frequency regulation. Firstly, the load characteristics are introduced, and the feasibility of energy storage to play multiple values is illustrated. Secondly, according to the frequency regulation market mechanism, the role of the thermal generating unit and the energy storage in the process of frequency regulation is quantified, and the revenue distribution mechanism is designed. Then, the optimal configuration model of the user side energy storage with multiple values is established. Finally, a case study shows that the method proposed in this paper can improve the economy of the energy storage configuration.