Economic Research on Energy Storage Participation in Auxiliary Service under the Background of New Power System

Under the background of the construction of the new power system, the large-scale improvement of the new energy grid connection and the increase of multiple loads lead to an increase in the demand for peaking and frequency adjustment of the power grid system, and the participation of energy storage in auxiliary services such as peaking and frequency adjustment is becoming more and more important. This paper focuses on the development of auxiliary service markets at home and abroad, constructs the cost-benefit analysis model of energy storage, and analyzes the economy of energy storage participating in auxiliary service markets such as peak shaving and frequency adjustment. The results show that energy storage alone or combined with other units to participate in peak shaving, frequency adjustment, and other ancillary services has a good economy, and provides decision support for relevant investors