On June 30, 2021, Pingdingshan Shengguang Energy Storage Co., Ltd. and China Mechanical Equipment Engineering Co., Ltd. formally signed a contract in Beijing to build the world's first 100-megawatt advanced compressed air energy storage using salt cavern gas storage in Ye County. Power station.

Compressed air energy storage is one of the most promising large-scale energy storage technologies in the future. Chairman Zhu Rongqian, the contractor of Pingdingshan Shengguang Energy Storage Co., Ltd., introduced that the technology and equipment used in the project all come from the scientific research and industrialization achievements of the Institute of Engineering Thermophysics, Chinese Academy of Sciences. The energy storage power station to be built can compress air through the compression subsystem and store it in the abandoned salt cave during the low electricity consumption period, and then release it at the peak electricity consumption time. The high-pressure air drives the expander to drive the generator to generate electricity. Electric energy storage and release to meet the energy storage needs of the local power grid.

The Institute of Engineering and Thermal Sciences of the Chinese Academy of Sciences is the first institution in China to carry out compressed air energy storage research. Chen Haisheng's team has spent 16 years to promote the leapfrog development of China's new compressed air energy storage technology. China National Energy (Beijing) Technology Co., Ltd. is an industrialized company of 100 MW advanced compressed air energy storage technology developed by the Institute of Thermal Engineering of the Chinese Academy of Sciences, which can provide 100 MW advanced compressed air energy storage system solutions. This technology has many advantages such as large scale, low cost, long life, clean and pollution-free, and is suitable for long-term large-scale application of electric energy storage technology. The system has the following advantages:

No need to burn fossil fuels, clean, pollution-free, and safe.

The design efficiency of the system is 70.4%, which is about 10%-20% higher than that of a compressed air energy storage power station of the same scale abroad.

The unit cost is low and the economy is good.

The system has a long life span of 30-50 years.

The energy storage cycle is not limited, and the daily energy dissipation rate is less than 0.5%.

It has a wide range of applications, only to exchange electric energy, suitable for various power stations.

The excess heat and cold energy generated by the operation of the system can realize a comprehensive energy supply.

It is understood that energy storage is known as the key supporting technology of the energy revolution. It is a strategic emerging industry strongly supported by the state, and the market demand is huge and urgent. In the National Fourteenth Five-Year Plan, compressed air energy storage is listed as one of the energy storage demonstration projects to be implemented. As an internationally renowned engineering contractor, CMEC has accumulated rich experience in the field of energy construction after more than 40 years of development, and attaches particular importance to the development of new energy and energy storage industries. Fang Yanshui, general manager of CMEC, said that compressed air energy storage has the advantages of large scale, low cost, high efficiency, and environmental friendliness. It has very broad prospects under the national strategy of "carbon peak" and "carbon neutral". . This technology and the rich salt cave resources in Ye County can be described as a "match made in heaven".

Xia Shang, deputy head of Yexian County, said that the rock salt in Yexian County covers an area of more than 400 square kilometers, with a reserve of 330 billion tons, ranking first in the country's well and mineral salt. After more than 40 years of mining, a unique salt cave space resource has been formed. The use of salt cavern energy storage will become an important part of the Pingdingshan energy storage industry. The completion of the air energy storage project will alleviate the power shortage caused by the peak-to-valley difference in the region, which is important for promoting the upgrading of the local energy structure and ensuring the sustainable development of energy and power. significance.

According to the International Energy Agency's forecast, by 2050, China's energy storage installed capacity will account for 10% to 15% of total electricity installed capacity, which can give birth to a trillion-level industry. Fang Yanshui said that the successful signing of the contract signifies that the cooperation between the two parties has entered a new stage, and the future development prospects are exciting. Editor/He Yuting