On December 31, China's largest all-vanadium redox flow battery energy storage power station , the Xinjiang Jimsar all-vanadium redox flow energy storage power station of the Three Gorges Group, was put into operation at full capacity. This marks a key breakthrough in the application of large-capacity long-term energy storage technology in China. Located in Jimsar County, Changji Prefecture, Xinjiang, the
project has a single storage capacity of more than 4000 kWh, and 240 groups constitute the largest all-vanadium redox flow battery energy storage power station in China. Van
adium redox flow battery (VRB) is a new type of energy storage technology, which stores and releases electric energy through the change of ion valence state of vanadium metal in liquid electrolyte. It is characterized by high safety and long cycle life. The total investment of the
power station is more than 1.9 billion yuan, consisting of energy storage unit, energy conversion unit and power system, with a total capacity of 1 million kilowatt-hours, which is equivalent to the total power of pure electric vehicle with battery capacity of 60 degrees 16000.
The project has built a photovoltaic power station with an installed capacity of 1 million kilowatts. It is estimated that the average annual power generation of the whole project can reach 1.72 billion kilowatt-hours, saving about 519000 tons of standard coal and reducing about 1.424 million tons of carbon dioxide emissions. As an integrated demonstration project of "photovoltaic + energy storage",
the project has achieved a number of breakthroughs in key technologies: material and system innovation, research and development of wide temperature range electrolyte, high reliability stack sealing materials, construction of intelligent thermal management system and digital twin operation and maintenance platform, and improvement of system safety and efficiency. Multi-scenario coupling optimization, through the coordinated dispatch of photovoltaic and energy storage, improves the utilization rate of power generation by 9%, and achieves stable operation in extreme environments. The comprehensive benefits are remarkable. After the project is put into operation, 220 million kilowatt-hours of green electricity will be consumed annually, and the electrolyte can be recycled. It has the functions of environmental safety and power grid support, and provides a technical model for large-scale new energy base supporting energy storage.
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