探访我国首个获得核准的“沙戈荒”新能源外送工程

Core Points - The "Ningdian Ruxiang" project is China's first approved "Shagao Desert" renewable energy transmission project, capable of delivering over 36 billion kilowatt-hours of electricity annually from Ningxia to Hunan, meeting the annual electricity needs of over 10 million households [1][2] - This project is part of China's strategy to accelerate the construction of a new energy system and enhance the capacity for "West-to-East" electricity transmission [1][2] Group 1: Project Overview - The "Ningdian Ruxiang" project is a ±800 kV UHVDC transmission line spanning 1616 kilometers, with a transmission capacity of 8 million kilowatts [2][3] - It is a key project in the "14th Five-Year" electricity development plan, contributing to a comprehensive UHV transmission network in China, with total investments exceeding 380 billion yuan and 19 UHV projects under construction [2][3] Group 2: Technical Aspects - UHV transmission lines have significant advantages, including three times the capacity of ordinary lines, long-distance transmission capabilities, and lower loss rates of approximately 4% to 5% [3][4] - The project faces design and construction challenges due to diverse geographical conditions, requiring tailored solutions for seismic zones, weak soil areas, and river crossings [4][5] Group 3: Equipment and Automation - All equipment for the project is domestically manufactured, including high-end converter transformers, which are crucial for the UHV system [5][6] - The project utilizes advanced automation and intelligent monitoring systems to ensure efficient operation and real-time adjustments based on grid demands [7][8] Group 4: Environmental Considerations - The project emphasizes green energy, with over 70% of the installed capacity coming from renewable sources, including 4 million kilowatts of wind power and 9 million kilowatts of solar power [8][9] - Measures are in place to mitigate environmental impacts, including wastewater treatment and noise reduction strategies, ensuring compliance with ecological standards [9][10] Group 5: Operational Impact - The project has already demonstrated its capability during peak electricity demand periods, with a trial operation achieving a delivery capacity of 4 million kilowatts [10] - Once fully operational, the project will provide 1/6 of Hunan's electricity needs, significantly enhancing the region's power supply stability [10]