According to the news from the China Machinery Industry Federation, China's independently developed largest global 105 MW two-pole high-speed large-capacity synchronous electric generator - "Chulong 105" has recently passed the review. The product has complete independent intellectual property rights and its overall technology reaches international advanced levels, providing key technical support for the long-term development of large-scale compressed air energy storage industry.
The successful development of the world's largest 105 MW high-speed motor
Compressed air energy storage is an efficient large-scale energy storage technology that uses surplus electricity during off-peak hours to compress air and store it in high-pressure sealed facilities, which is then released to generate electricity during peak hours. High-speed motors are one of the key core equipment of compressed air energy storage systems. The 105 MW two-pole high-speed motor that has passed the review for the first time adopts an integrated design domestically, possessing dual functions of motor and generator operation capabilities, enabling flexible switching between different working scenarios, greatly improving the utilization rate of the equipment.
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The "Chulong 105" motor saves more than 40% of floor space compared to multiple conventional motors with the same power. The compressed air energy storage system equipped with this motor can increase the integration of regional renewable energy by 15% to 20%, with an expected annual carbon dioxide reduction of 500,000 tons.
Four years of research to overcome world-class problems
In the absence of mature industry standards and technological references, China's scientific research team successfully developed the world's largest 105 MW high-speed motor after four years of efforts. What are the world-class challenges hidden behind the technological breakthrough?
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In the production workshop, the prototype of the "Chulong 105" motor, with a diameter of 3 meters and weighing over 200 tons, is initially taking shape. According to the project leader, the core difficulty of the two-pole high-speed motor lies in "high-level system integration," which is equivalent to achieving perfect synergy between the "power engine" and the "generator heart" within the same device.
Guangshun Li, General Manager of Wolong Electrical Nanyang Explosion-proof Group Heavy Machinery Company: The motor integrates so many functions within such a small volume, and there are many technological innovations involved, such as 15.75 kV anti-corona and insulation technology covering all altitudes.
In the automated stator coil production line, mechanical arms are winding insulating materials with a precision of 0.01 millimeters. This self-developed digital bionic system controls the consistency error of the coils within three ten-thousandths.
The operation of the motor in compressed air energy storage requires starting and stopping once every day, with a total number of starts and stops reaching 20,000 throughout its lifecycle, putting higher demands on the motor's lifespan and stability.
In the final assembly workshop, the world's largest high-speed dynamic balancing test platform is in operation. Through full-process precision control, the vibration index of "Chulong 105" is three times stricter than the national standard, reaching the precision equipment standard of aviation grade.
China's compressed air energy storage industry is entering a fast track of development
As the most mature large-scale physical energy storage technology besides pumped storage, compressed air energy storage is witnessing an industrialization boom period. More than 10 projects are under construction in China, with planned installed capacity exceeding 10 GW, leading globally in both technology and engineering applications.
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In Xinyang, Henan Province, the 300 MW compressed air energy storage project with a mountain body flat tunnel as an artificial gas storage reservoir has completed excavation of the artificial tunnel over half way. According to incomplete statistics, more than ten generations of demonstration projects including 10 MW, 100 MW, and 300 MW have been built in China, forming a complete technical chain from "R&D-demonstration-scaling up."
The "Energy Storage Industry Research White Paper 2025" shows that in 2024, global new energy storage installations will reach 165.4 gigawatts, with China's new energy storage installations reaching 43.7 gigawatts. Compressed air energy storage, due to its long life and high safety, has become the preferred solution for grid-level energy storage.
Compressed air energy storage has been included as a key development direction for new energy storage in the "14th Five-Year Plan." Many places have introduced special subsidy policies. The industry predicts that by 2030, China's compressed air energy storage installed capacity will exceed 50 GW, with an annual carbon dioxide reduction of more than 200 million tons, equivalent to shutting down 60 million-kilowatt coal-fired power plants, providing solid support for building a new power system.
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Original title: "Overcoming World-Class Problems! China Develops This 'World's Largest'!"
Column Editor: Zhou Chunsheng, Text Editor: Xia Xuyin, Picture Source: CCTV News, Picture Editor: Cao Liyu
Source: Author: CCTV Channel One
Original article: https://www.toutiao.com/article/7497382646666838565/
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