Electrochemical energy storage participating in auxiliary grid frequency regulation has characteristics such as fast response speed, strong short-term power throughput capacity, and flexible and accurate regulation performance. It can effectively solve thermal power units problems such as long response time lag , low unit climbing rate, difficulty in accurately tracking the frequency regulation instructions of power grid dispatching, as well as regulation delay, regulation deviation, and regulation reversal. While helping to improve the operational flexibility of thermal power units, it can also obtain considerable benefits through policy subsidies. As a high-quality power dispatch resource in Jiangsu Province, this project has been listed as one of the first batch of demonstration projects for energy storage frequency regulation in Jiangsu Province, setting a benchmark for other subsequent energy storage frequency regulation projects in Jiangsu Province and playing a more prominent role in Jiangsu power grid. The energy management EMS controls the energy storage system, responds to AGC instructions, distributes energy and conducts maintenance management to ensure battery energy balance and is committed to improving battery life.