Application Analysis of Large Scale Electrochemical Energy Storage in Northeast Auxiliary Service Market

With the continuous development of the new power system under the "double carbon" goal, the peak load regulation pressure of the power system will continue to increase, and the existing peak load regulation capacity is slightly weak. As a flexible means of peak load regulation, energy storage is urgently required for deep peak load regulation. With the rapid development of electrochemical energy storage technology, the time-space power characteristics of large-scale energy storage system can be used to enrich the peak shaving control means of power grid, improve the power supply reliability of power grid, and enhance the renewable energy consumption capacity of Northeast China. This paper analyzes the current situation of northeast auxiliary service market, studies the participation of energy storage as an independent operator in Northeast electric power auxiliary service market, and obtains the new energy consumption capacity and income of largescale energy storage application in Northeast China through two typical daily scenarios, By analyzing the effect of deep peak shaving of large-scale electrochemical energy storage in 2030 and 2035, it is concluded that under the condition of high permeability wind power integration, large-scale electrochemical energy storage participating in deep peak shaving has very good effect, and can obtain very observable benefits through auxiliary service market. The research results can provide reference to the investment.