顺利完成50% 我国首个30万方量级大型储气建设取得重要进展

Group 1 - The construction of the 300MW advanced compressed air energy storage national demonstration power station's underground gas storage facility in Xinyang, Henan, has reached 50% completion, marking significant progress for China's first large-scale gas storage project with a capacity of 300,000 cubic meters [1][4] - The underground gas storage facility is equivalent to the volume of 130 Olympic-sized swimming pools and plays a crucial role in the compressed air energy storage system, influencing gas storage capacity, system efficiency, safety, and stability [3][4] Group 2 - The project is expected to generate 420 million kilowatt-hours of electricity annually, enhancing the efficiency, economy, and reliability of the local power system, which is significant for the compressed air energy storage sector [4] - The underground gas storage facility features a "high-efficiency self-draining system" and a "breakthrough ultra-large diameter" design, addressing key technical challenges related to water accumulation due to geological conditions, thus improving long-term safety and operational stability [6][7] Group 3 - The project introduces a 15-meter ultra-large diameter design, increasing the effective volume of the gas storage facility to 300,000 cubic meters, representing a 300% increase compared to previous maximum designs, while also reducing costs by 200 million yuan [7] - The innovative horizontal tunneling construction method reduces risks and costs compared to traditional vertical or inclined tunneling methods, allowing for more precise selection of stable rock layers and minimizing construction risks associated with geological anomalies [8]