The world's first artificial chamber compressed air energy storage project starts construction
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On December 21, 2022, the "Liaoning Chaoyang 300 MW Compressed Air Energy Storage Power Station Demonstration Project" and the "Gansu Jiuquan 300 MW Compressed Air Energy Storage Power Station Demonstration Project" invested and constructed by China Energy Digital Technology Group Co., Ltd. (hereinafter referred to as "China Energy Digital Technology Group") Started simultaneously through a combination of online and offline methods, both projects are the world's first 300-megawatt compressed air energy storage demonstration projects that use artificial chambers as gas storage systems. This marks that China Energy Engineering Group Co., Ltd. has once again achieved a breakthrough in key core technologies in the field of compressed air energy storage. “Currently, China Energy is building on its '30·60' system solution 'one center' and 'two basic points' of energy storage and hydrogen energy, and is striving to create a 'three new' energy construction platform of new energy, new infrastructure and new industries. ”Song Hailiang, secretary of the Party Committee and Chairman of China Energy Construction, said at the groundbreaking ceremony that the company will accelerate the layout of a number of low-carbon and zero-carbon projects that will further promote the energy revolution and fully embody high-quality development.
The world's first use of artificial chamber gas storage technology can reduce the restrictions on geographical locations such as salt caverns for large-scale compressed air energy storage projects, thereby linking multi-regional, large-scale energy storage with wind and solar resources, laying a solid foundation for project promotion. “The two projects started this time both use China Energy's compressed air energy storage power station system solution - a 300-megawatt non-supplementary combustion compressed air energy storage system. They have achieved comprehensive independent research and development and 100% localization of the core technology. The conversion efficiency of the main charging and discharging system has reached more than 70%. The unit cost of the system is no more than 1,400 yuan/kWh. It has created a new route and new solution for large-capacity compressed air energy storage that is green, zero-carbon, efficient, economical, and has flexible application scenarios. ”Song Hailiang said. Two demonstration projects in Chaoyang, Liaoning and Jiuquan, Gansu have achieved "one first" and "three leaders" in the field of compressed air energy storage. “One "first" is the world's first gas storage to use a large underground artificial chamber, and the "three leaders" are leading technology route, leading solution and leading industrial ecology.
The technological route is leading, with a high upper limit of artificial chamber pressure and a wide range of fluctuations, which can reduce the restrictions of conventional large-scale compressed air energy storage projects on geographical locations such as salt caverns. Combined with my country's resource endowment, artificial chamber technology can form a linked development of large-scale energy storage and wind and solar resources.； Leading in solutions, it adopts China Energy Construction's compressed air energy storage power station system solution, and has an integrated model of "research, investment, construction, and operation" to realize the full life cycle industrialization of large-scale compressed air energy storage. ； Leading the industrial ecology, it aims to build the energy storage capital of the northwest and northeast regions, improve the consumption capacity and export ratio of green electricity, build a green equipment manufacturing base, and serve the construction of new power systems across the country. It is worth mentioning that the two projects use digital and intelligent technologies to build a smart energy storage power station and build a smart central control platform that realizes the coordination of various subsystems in the station. As an independent energy storage power station, it meets the modular needs of flexible interaction and elastic coupling with external systems, and provides an interface for the construction of advanced application scenarios such as "virtual power plants".