Core Viewpoint - The commissioning of the 500 kV Jiangbei Substation in Wuhan marks a significant advancement in the region's power infrastructure, enhancing the reliability of electricity supply for over ten million residents and supporting the high-quality development of the local economy [1] Group 1: Project Overview - The Jiangbei Substation is located in the Dongxihu District of Wuhan, Hubei Province, and aims to reduce transmission line length and power loss by directly connecting to urban load centers [1] - The substation is expected to deliver an annual transmission capacity of 3.84 billion kilowatt-hours [1] - It will provide power to five urban districts in Wuhan, including Jiang'an, Jianghan, Qiaokou, Dongxihu, and the Yangtze River New District [1] Group 2: Technical Features - The substation features an all-indoor design, with all electrical equipment housed in a three-story building 22 meters high, saving space compared to conventional substations [1] - Each transformer in the substation has its own fully enclosed "single room," equipped with soundproof materials to keep outdoor noise levels below 60 decibels, minimizing the impact on nearby residential areas [1]

Core Insights - The construction of the Tibet-Guangdong DC transmission project has commenced, marking it as the world's most powerful, advanced, and largest flexible DC transmission project [1] Group 1: Project Overview - The Tibet-Guangdong DC transmission line spans approximately 2,681 kilometers, crossing four provinces: Tibet, Yunnan, Guangxi, and Guangdong [1] - The project has a rated transmission capacity of 10 million kilowatts [1] Group 2: Environmental Impact - Upon full operation in 2029, the project is expected to deliver over 43 billion kilowatt-hours of electricity annually to the Greater Bay Area, which is about half of the annual output of the Three Gorges Dam [1] - The project will utilize 100% clean energy, replacing approximately 12 million tons of standard coal consumption and reducing carbon dioxide emissions by about 33 million tons [1] Group 3: Economic Implications - The total investment for the project is approximately 53.2 billion yuan, with an additional investment of over 150 billion yuan for supporting "water-wind-solar integrated" power bases [1] - The project is anticipated to significantly boost the growth of related upstream and downstream equipment and construction industries, with peak employment expected to exceed 100,000 jobs [1]

9月16日，我国"十四五"规划建设的跨省区输电重点工程——藏粤直流输电工程建设启动，这是目前世 界上输电能力最强、技术水平最先进、投资规模最大的柔性直流输电工程。 藏粤直流工程输电线路全长约2681公里，自西向东跨越西藏、云南、广西、广东4省区，额定输电容量 1000万千瓦。该工程2029年全面投运后，藏东南清洁能源基地每年可向大湾区负荷中心输送超430亿千 瓦时电能，约为三峡电站年发电量的一半，且100%为清洁能源，可替代标煤消耗约1200万吨，减少二 氧化碳排放约3300万吨。该工程总投资约532亿元，配套"水风光一体化"电源基地投资超过1500亿元， 可有力带动一系列上下游装备、施工产业增长，高峰期预计将带动直接就业10万余人。 （文章来源：经济日报） ...

Core Points - The construction of the Zang-Guangdong DC project, a key cross-provincial power transmission project under China's 14th Five-Year Plan, has commenced, marking it as the world's most powerful, technologically advanced, and largest investment flexible DC transmission project [1][3] Group 1 - The Zang-Guangdong DC project starts in Tibet, passing through Yunnan and Guangxi, and ultimately reaching Guangdong, with a total transmission line length of approximately 2,681 kilometers [3] - Upon full operation in 2029, the project is expected to deliver over 43 billion kilowatt-hours of electricity annually to the Guangdong-Hong Kong-Macao Greater Bay Area, which is equivalent to half of the annual output of the Three Gorges Power Station, and will be 100% clean energy [3] - The project will feature four converter stations located in Changdu and Linzhi in Tibet, as well as in Guangzhou and Shenzhen in Guangdong [3] Group 2 - The clean energy base in southeastern Tibet has a new energy installed capacity of 10 million kilowatts, serving as the starting point for the Zang-Guangdong DC project [3] - The project faces significant challenges due to its long distance of over 2,600 kilometers and the need to traverse complex geographical terrains, including high mountains with altitudes reaching 5,300 meters and the geologically complex Hengduan Mountains, with nearly 90% of the route being mountainous [3] - To address the instability of new energy generation, the project employs world-leading "ultra-high voltage multi-terminal flexible DC transmission" technology, which allows for flexible scheduling of green electricity generated at different times and locations, minimizing current disturbances and impacts on the power grid, ensuring uninterrupted power supply [3] - The entire transmission process from Tibet to Guangdong takes only 9 milliseconds [3]