A big step for compressed air energy storage: officially entering a new era of 300MW single unit
Compressed air energy storage, a long-lasting, efficient, intrinsically safe physical energy storage technology that is comparable to pumped hydro energy storage, has officially entered a new era of 300MW single unit. This is a major step forward for compressed air energy storage. step.
In a county-level city called Yingcheng in Hubei Province, the world’s first 300MW non-supplementary combustion compressed air energy storage demonstration project is accelerating construction here. Early next year, a large-scale commercial compressed air energy storage will be established here. milestone in cultural development.
300MW class single unit leap forward
Starting from 1.5MW, 10MW and 60MW are in commercial operation, and 100MW and 300MW are about to be put into operation. The pace of large-scale commercialization of compressed air energy storage power stations is getting faster and faster.
From May to September 2022, 60MW and 100MW compressed air energy storage power stations have been connected to the grid. The next stop for larger-capacity and larger-scale power stations will be Yingcheng. The Yingcheng project will become the first 300MW compressed air energy storage project connected to the grid and put into operation in China. Compressed air energy storage technology has ushered in a leapfrog development. .
The main implementation entity of the Yingcheng project is China Energy Construction Digital Technology Group Co., Ltd. (referred to as China Energy Construction Digital Technology Group Co., Ltd.). China Energy Construction Digital Technology is a leading state-owned enterprise in the field of compressed air energy storage in my country.
The earliest R&D team of China Energy Engineering Group aims at system simplicity, high efficiency, good economy, and large-scale engineering. Based on full research and demonstration of the entire compressed air energy storage system and in-depth research on large domestic equipment manufacturing enterprises, It took the lead in focusing on the research and development of a 300MW large-capacity compressed air energy storage system.
At that time, the largest compressed air energy storage project built in China was only 10MW, and there were only one 60MW and one 100MW project under demonstration construction. China Energy Construction relied on years of technical accumulation in the power industry to conduct overall research and judgment on the new power system. Directly launching the 300MW class, I have to say that this is a very forward-looking move.
But this is not an unrealistic idea.
Facts have proved that China Energy Engineering Group Co., Ltd. is vigorously developing large-capacity long-term physical energy storage technology mainly based on 300MW compressed air energy storage, which is in line with China’s energy transformation requirements and industry development rules: first, it facilitates grid dispatching in terms of scale; second, it can Significantly improve system efficiency and reduce unit capacity costs; third, it is conducive to comprehensive localization and accelerating the industrialization process; fourth, it is conducive to the steady upgrading of large-scale energy storage power stations. At the same time, it can drive the transformation and upgrading of my country’s energy and power equipment manufacturing industry, giving it new vitality.
On January 26, 2022, Energy Construction Digital was officially established, assuming the important responsibility of the industrial development of compressed air energy storage in China. In the same year, the world’s first unit (set) Hubei Yingcheng project became the first 300MW of Energy Construction Digital The construction of the first-level commercial demonstration project has officially started.
Since the start of construction on July 26, 2022, this benchmark project has basically completed the civil construction work and has begun to enter a new stage of equipment installation. Related core equipment such as compressors, generators, expanders, heat storage and exchange spherical tanks, etc. have been gradually rolled off the production line and installed on site. It is expected to achieve full power and full-time production goals before the end of June next year.
The Yingcheng project has a single unit power of 300MW and an energy storage scale of 1,500MWh. It is the largest project currently under construction. The core technical indicator energy conversion efficiency can reach about 70%. The static investment unit cost of the project will be reduced to about 6,000 yuan/kW. It is expected to be completed after completion. The annual power generation capacity can reach 500 million kilowatt hours.
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A major breakthrough in core equipment
Difficulties and hardships have brought you success. The big leap from the existing 100MW to 300MW is a simple change in a number, but there are many things behind it. The spirit of daring to challenge the world’s problems, constantly conquering cutting-edge technologies, and bravely scaling scientific and technological peaks is a strong driving force supporting the industry’s leapfrog development.
Compressed air energy storage is a long-term physical energy storage technology. The system involves many key equipment. The first major problem faced by a single machine with a large capacity is the technical difficulty in manufacturing key core equipment.
In order to solve these problems, Energy Construction Digital has adopted a fully open cooperation attitude to promote the establishment of an open, win-win, shared, and green collaborative innovation platform. Relying on the new energy storage industry innovation alliance led by China Energy Construction, it has joined hands with Shen Gu, Shaanxi Gu, Harbin Electric, Dongfang Electric, Shanghai Electric and other leading enterprises in the industry and China Energy Equipment, a subsidiary of China Energy Construction, are jointly committed to the research and development breakthroughs of core equipment, promoting the integrated development of the energy and power equipment industry chain, digital and intelligent development, and high-tech Quality development.
On August 23, a series of 300MW compressed air large-capacity motors rolled off the production line at Shanghai Electric Machinery Factory. The main technical indicators of this equipment have reached the international advanced level of similar products. The motor power range covers 20~150MW, and the voltage level is 10~15.75kV. It can Meeting various application scenarios of compressed air energy storage units is of great significance to promoting the development of the national compressed air energy storage industry.
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