Shaangu helps the world first 300MW compressed gas energy storage power station to be fully connected to the grid
On January 9, the world's first 300-megawatt compressed gas energy storage demonstration project "Energy Storage No. 1" invested and constructed by China Energy Construction was connected to the grid at full capacity in Yingcheng, Hubei Province. The project set three world records for single-unit power, energy storage scale and conversion efficiency, and achieved 100% localization of key core equipment and deep-ground space utilization products.
The Hubei Yingcheng 300-megawatt compressed gas energy storage demonstration project, in which Shaangu participated deeply in the research and development and construction, achieved 100% localization of key core equipment and deep-ground space utilization products, marking that China's compressed gas energy storage technology has taken the lead in entering a new era of 300-megawatt engineering. It has created "three world records" for single-unit power, energy storage scale and conversion efficiency, as well as 6 industry demonstrations and dozens of international firsts, filling many international gaps, which is of great significance to improving my country's ability to develop and utilize deep-ground resources, ensuring national energy security, helping to build a new power system, and achieving the "dual carbon" goal. It is also a "national business card" for China's new long-term physical energy storage system solutions to go global.
Compressed gas energy storage power stations use air to generate electricity. When electricity consumption is low, the surplus electricity drives the compressor to compress the air into sealed gas storage reservoirs such as salt caverns and artificial chambers. The heat generated during the air compression process is stored in the form of hot water, molten salt, etc. in heat storage tanks on the ground. When electricity consumption is high, the underground gas storage releases the stored high-pressure air, and the heat storage tank releases the stored heat. After being heated, the high-pressure air has a great expansion force, which drives the air turbine generator set to generate electricity to supply power to the power grid.
The Hubei Yingcheng 300MW compressed gas energy storage demonstration project will start construction in 2022. It makes use of the abundant local salt cavern resources and has the characteristics of "deep, large, long and green". Deep means the deepest point is 600 meters; large means the power of a single unit is 300MW and the energy storage capacity is 1500MWh; long means storing energy for 8 hours and releasing energy for 5 hours every day, with long-term energy storage effect and a service life of more than 30 years; green means no fossil fuels are involved in the whole process, and the annual power generation is expected to be close to 500 million kWh, which will save more than 150,000 tons of standard coal each year, helping to cope with the volatility, intermittency and randomness of new energy power generation.
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