走近大国工程丨塞上“风光”点亮三湘灯火探访我国首个获得核准的“沙戈荒”新能源外送工程

Core Viewpoint - The "Ningdian Ruxiang" project is China's first approved "desert and Gobi" renewable energy transmission project, which will deliver over 36 billion kilowatt-hours of electricity annually from Ningxia to Hunan, meeting the annual electricity needs of over 10 million households [6][17]. Group 1: Project Overview - The "Ningdian Ruxiang" project is a ±800 kV UHVDC transmission line that spans 1616 kilometers, connecting Ningxia with Hunan and crossing multiple provinces [8][9]. - The project is a key initiative under China's 14th Five-Year Plan for power development, with a total investment exceeding 380 billion yuan for UHV projects [8][9]. - The project aims to enhance the capacity for "West-to-East" electricity transmission and optimize the allocation of clean energy resources [6][8]. Group 2: Technical Aspects - The UHVDC transmission line has a capacity of 8 million kilowatts and a transmission loss rate of approximately 4% to 5%, significantly lower than conventional transmission lines [9][10]. - The project involves overcoming various technical challenges, including diverse geological conditions and the need for customized solutions for different terrains [10][11]. - All equipment for the project is domestically manufactured, with advanced technologies implemented to enhance efficiency and reliability [11][12]. Group 3: Renewable Energy Integration - The project has an installed capacity of 17.64 million kilowatts, with 13 million kilowatts coming from renewable sources, including 4 million kilowatts from wind and 9 million kilowatts from solar energy [14]. - Over 50% of the electricity transmitted to Hunan will be from renewable sources, contributing to a reduction of 16 million tons of carbon dioxide emissions annually [14][15]. - The integration of renewable energy faces challenges due to the variability of wind and solar output, necessitating the use of traditional power sources for balancing [15]. Group 4: Environmental Considerations - The project incorporates measures to minimize environmental impact, including wastewater treatment and noise reduction strategies [16]. - Construction has been carefully planned to avoid sensitive ecological areas and water source protection zones, with a focus on ecological restoration [16][17]. - The project has successfully passed the summer peak electricity demand test, demonstrating its capability to provide stable power supply during high-demand periods [17].