我国首个 “交改直” 工程输送电量破百亿！国网镇江：相当于约300万户家庭一年的用电

Core Viewpoint - The first "AC to DC" transmission transformation project in China, the ±200 kV Yangzhou-Zhenjiang DC transmission phase I project, has successfully transmitted over 10 billion kilowatt-hours of electricity, significantly contributing to energy structure optimization and low-carbon development in the Yangtze River Delta region [1][3]. Group 1: Project Achievements - The project has delivered an electricity equivalent to the annual consumption of approximately 3 million households, replacing about 950,000 tons of standard coal and reducing carbon dioxide emissions by 2.55 million tons [1]. - Since its operation began in April 2024, the project has become a vital artery for the transmission of wind and solar energy from northern Jiangsu, enhancing the clean energy consumption capacity of the Jiangsu power grid [5]. Group 2: Technical Innovations - The project employs innovative "AC to DC" technology, increasing the transmission capacity from 500,000 kW to 1,200,000 kW, allowing for efficient and precise delivery of clean energy [5]. - The project has been operational for over 20 months, with an average daily transmission of approximately 25.5 million kilowatt-hours, alleviating the pressure on renewable energy output in northern Jiangsu [5]. Group 3: Future Developments - The phase II of the Yangzhou-Zhenjiang DC project is nearing completion and is expected to be operational by February this year, while the phase III is in the research phase, projected to be completed by 2028 [7]. - The State Grid Jiangsu Electric Power Company plans to develop additional "embedded" DC transmission projects, such as the Nantong to Suzhou cross-river DC transmission project, to further support integrated development in the Yangtze River Delta and contribute to the construction of a new power system [7].