The 100 MW Dalian Flow Battery Energy Storage Peak-shaving Power Station, with the largest power and capacity in the world so far,was connected to the grid in Dalian, China, on September 29, and it will be put into operation in mid-October. Contact online >>
The 100 MW Dalian Flow Battery Energy Storage Peak-shaving Power Station, with the largest power and capacity in the world so far,was connected to the grid in Dalian, China, on September 29, and it will be put into operation in mid-October.
This energy storage project is supported technically by Prof. LI Xianfeng''s group from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences. And the system was built and integrated by Rongke Power Co. Ltd.
The Dalian Flow Battery Energy Storage Peak-shaving Power Station was approved by the Chinese National Energy Administration in April 2016. As the first national, large-scale chemical energy storage demonstration project approved, itwill eventually produce 200 megawatts (MW)/800 megawatt-hours (MWh) of electricity.
The first phase of the on-grid power station project is 100 MW/400 MWh. Based on China''s average daily life electricity consumption of 2 kWh per capita, the power station can meet the daily electricity demand of 200,000 residents, thus reducing the pressure on the power supply during peak periods and improving power supply reliability in the southern region of Dalian.
Energy storage technology can help power systems achieve the strain and response capability needed after large-scale access to the power grid. It is also particularly important in facilitating the use of renewable energy, which is key to helping China achieve its carbon peak and carbon neutrality goals but is not always accessible due to variations in wind and sunlight, etc.
The Dalian Flow Battery Energy Storage Peak-shaving Power Station, which is based on vanadium flow battery energy storage technology developed by DICP, will serve as the city''s "power bank" and play the role of "peak cutting and valley filling" across the power system, thus helping Dalian make use of renewable energy, such as wind and solar energy.
These renewable energy sources will be used to charge the station''s batteries during the grid load valley period by converting electrical energy into battery-stored chemical energy. Later, at peak grid load, the stored chemical energy will be converted back into electrical energy and transmitted to users.
The station''s energy storage technology uses vanadium ions of various valence states. Electrical energy and chemical energy are converted back and forth through redox reactions of these ions in the positive and negative electrolytes, thus realizing large-scale storage and the release of electrical energy.
This technologyis promisingin large-scale energy storage applications because of its excellent safety, good reliability, large output power and storage capacity, long life, good cost-performance, use of recyclable electrolytes, and environmental friendliness.
Additionally, this technology can work with conventional thermal power, nuclear power, and other power sources, providing peak regulation and frequency regulation for the power systemas well as improving its flexibility.
The Dalian Flow Battery Energy Storage Peak-shaving Power Station will improve the renewable energy grid connection ratio, balance the stability of the power grid, and improve the reliability of the power grid, thus serving as a model for electricity peak-shaving and renewable energy grid management in China.
： ：2022-09-29 ：News
Nov 15, 2022
The Dalian Flow Battery Peak-Load Shifting Power station can store a maximum of 400,000 kilowatt-hours of electricity, enough to meet the daily needs of about 200,000 people. The director of the project calls it a "power bank".
Flow batteries are a new type of battery technology that operate by using safer and more sustainable materials. They have a long service life, can be re-charged more than 15,000 times and their capacity can be adjusted as needed.
Li is confident that energy storage will play an important role in future smart grid construction to achieve carbon neutrality goals.
LI XIANFENG, Professor, Dalian Institute of Chemical Physics, Chinese Academy of Sciences said, "Electricity and manufacturing account for around 90% of carbon emissions, and the share of electricity alone is nearly 50%. Emission reduction in the power system requires the construction of a new system with clean energy as the main source of power generation. This is where we need energy storage."
Energy storage power stations can alleviate the instability of large-scale renewable energy sources such as wind and solar energy.
YU LI, Dalian, Liaoning Province said, "The Chinese government has issued a number of policies to encourage the development of electrochemical energy storage technologies such as flow batteries. This year, the National Development and Reform Commission and the National Energy Administration jointly issued two documents identifying energy storage as a key link to reducing carbon emissions."
According to the official target, by 2025, China''s installed energy storage capacity will reach more than 30 million kilowatts. (CGTN)
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