2600公里，9毫秒送达！硬核技术“护送”西藏“绿电”点亮万家灯火

Core Viewpoint - The construction of the Zang-Guangdong DC project, the world's most powerful and advanced flexible DC transmission project, has commenced, representing a significant investment in China's energy infrastructure [1][5]. Group 1: Project Overview - The Zang-Guangdong DC project starts in Tibet and spans approximately 2,681 kilometers through Yunnan and Guangxi, ending in Guangdong, with four converter stations being built in key locations [3][5]. - The project utilizes domestically developed, internationally leading ultra-high voltage flexible DC transmission technology, with a rated voltage of ±800 kV and a capacity of 10 million kW, involving a total investment of 53.2 billion yuan [5]. Group 2: Economic and Environmental Impact - The project is expected to facilitate the conversion of Tibet's resource advantages into economic benefits, addressing challenges related to high-altitude DC transmission and the integration of renewable energy in weak grid areas [7]. - Upon full operation in 2029, the project will deliver over 43 billion kWh of clean energy annually to the Guangdong-Hong Kong-Macao Greater Bay Area, equivalent to half the annual output of the Three Gorges Dam, with 100% of the energy being clean [7][14]. Group 3: Technical Challenges and Solutions - The project faces significant challenges due to the geographical terrain, including high mountains and complex geology, with nearly 90% of the route being mountainous [10]. - To ensure stable delivery of green electricity, the project employs advanced "ultra-high voltage multi-terminal flexible DC transmission" technology, allowing for flexible scheduling of renewable energy and minimizing disturbances to the grid [11].