html On March 28, at the commissioning site of Chongqing Changshou Enliji Energy Storage Station, State Grid Chongqing Electric Power employees confirmed that the equipment was running well and started grid connection operation. This marks that the largest megawatt customer-side electrochemical energy storage power station in southwest my country is officially connected to the grid and put into operation, which can provide up to about 20,000 kilowatt-hours of off-peak power every day.
The largest megawatt customer-side electrochemical energy storage power station in southwest China - Changshou Enliji Energy Storage Station (Liu Research)
The Changshou Enliji Energy Storage Station project covers an area of about 500 square meters, with 72 new prefabricated cabins, including batteries. , Inverter and rectifier integrated cabin, convergence switch cabin, firefighting cabin, etc. This energy storage station is the largest customer-side energy storage station in southwest China and provides energy storage services to Chongqing Chemical Enliji Investment Co., Ltd.
Grid employees inspect the energy storage system (Wang Yao)
According to Wu Jiang, the general manager of the Changshou Enliji energy storage station project, the scale of the station is 5 MW/10 MWh, and one energy storage cycle can store an equivalent amount of electricity. The combined capacity of 200,000 ordinary power banks can meet the reliable electricity needs of more than 3,500 households for one hour at the same time. A total of 6 energy storage square arrays are arranged on the project site, with a total of 60 energy storage cabinets. A total of 26,880 long-life energy storage cells with a single capacity of 120 Ah are used. The system can achieve more than 6,000 charge and discharge cycles.
During the construction process, the energy storage station was constructed using a full set of prefabricated cabin models. Each energy storage cabinet forms an integrated plug-and-play modular product, with energy storage and AC/DC power conversion capabilities, realized through multi-machine interconnection It enables the flexible expansion and modular construction of energy storage stations, reduces the amount of on-site construction work and shortens the project construction time.
Grid employees check the operation of the transformer of the Changshou Enliji energy storage power station (Liu Research)
The energy storage station is like a giant "power bank". After being put into operation, it can provide up to about 20,000 kilowatt-hours of off-peak power every day, reducing energy consumption. Ji peak load, effectively improve the stability and reliability of enterprise power consumption, while extending the service life of equipment. Zhou Haifeng, manager of the Electrical Instrument Center of Chongqing Huayi Enliji Investment Co., Ltd., said: "The energy storage station charges during off-peak hours and discharges during peak hours, making full use of the peak-to-valley price difference to reduce the cost of electricity purchase and reduce the company's electricity demand. , and can also participate in demand-side response and save electricity purchase costs, which is expected to save the company more than 3 million yuan every year."
Grid employees check the working condition of the transformer (Wang Yao)
According to the Changshou Power Supply Branch of the State Grid Chongqing Electric Power Company. Chen Jiankai, executive deputy team leader of the new power system, introduced that the customer-side energy storage power station serves as a reserved active power reserve. It can also be used as a backup capacity in case of power grid emergencies to ensure the stable operation of the power system and customer power quality. It can also reduce Impact on the power grid to ensure safe, economical and efficient operation of the power grid.
A power grid employee checks the energy storage battery (Wang Yao)
Nowadays, the energy storage industry has become an emerging industry, which is both a challenge and an opportunity for Chongqing Power Grid. State Grid Chongqing Electric Power Company uses the power grid platform as a support to encourage the aggregate utilization of customer-side distributed energy storage facilities such as uninterruptible power supplies, electric vehicles , and charging and swapping facilities, to play the role of load peak shaving and valley filling, and participate in demand-side response. , innovating the source-load two-way interaction model.
At the same time, State Grid Chongqing Electric Power Company is actively promoting the construction of a new power system, making every effort to build a smart interactive platform for load clustering, and consolidate a million-kilowatt adjustable load resource pool, which is widely incorporated into distributed power supplies , self-owned power plants, Various types of resources such as energy storage guide loads to actively participate in power peak shaving, and the service ensures that the carbon neutrality goal is achieved as scheduled, and promotes the high-quality development of the Chengdu-Chongqing twin-city economic circle.
