来源：光明日报 青藏高原的雪山融水化作清洁电能，仅需9毫秒便能跨越2681公里，点亮粤港澳大湾区的万家灯火—— 这一看似科幻的场景，即将通过藏粤直流工程成为现实。 "这是我国首个跨越如此复杂地形的特高压工程。"中国南方电网有限责任公司工程建设部副总经理董言 乐表示，"我们面临的是超高海拔、雪山冻土、地质灾害、大件运输和环境保护等世界级难题。" 这条全长2681公里的"电力天路"，需要跨越青藏高原、云贵高原和华南丘陵三级地理阶梯，全线近90% 为山地、30%为高山大岭，海拔最高处达5300米。面对如此挑战，藏粤直流作为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，正在创造电力建设史上的多项"世界第一"。 而这背后，是科研工作者们长达数年的攻坚战。 "以前总觉得宇宙射线离我们很远，直到拿到西藏的环境数据。"南网科研院团队骨干杨柳说，为了找到 答案，团队把功率器件送到了东莞中国散裂中子源——这个能加速中子束的国家大科学装置，可以在几 小时内模拟器件在高海拔几十年的辐射量，快速验证功率器件在高海拔环境中的可靠性。 最终，他们不仅找到了器件的"安全电压阈值"，还给出了降低失效率的措施——这意 ...

高压电力设备之间的空气间隙在超高电压下可能会被电流"击穿"，影响电力设备安全。为了支撑藏 粤直流工程建设，亟须开展3000米以上海拔的长空气间隙放电真型试验，摸清楚电场的"脾气"，掌握换 流站中高压设备在高海拔特高压直流运行电压下的安全距离底线。 科研团队克服高海拔地区自然地理环境给试验带来的困难，累计开展并完成棒板、球板、均压环对 地等试验项目23个大类、114组试验、冲击放电3000余次，获得了宝贵的高海拔放电硬核试验数据。 研发出世界首套能量自平衡柔直换流阀，在世界上首次实现千万千瓦级超远距离多端柔性直流交直 流故障穿越等多个突破，推动大容量换流阀、换流变压器等全套特高压核心装备首次进入4000多米超高 海拔……南方电网超高压公司特级专业技术专家任成林介绍，公司组建了产学研团队，先后攻克了一系 列关键核心技术，进一步扩大我国在电力领域的国际领先优势。 数字化赋能是藏粤直流工程运用新技术的重要亮点。"我们将在少人区、无人区探索少维护、免维 护，在建设运维全过程推广机器代人，深入推进数字化设计与数字孪生技术应用，将藏粤直流工程打造 为数字化转型标志性工程。"任成林说。 藏粤直流工程预计2029年全面投运，投 ...

Core Viewpoint - The construction of the Zang-Guangdong DC project marks a historic achievement in power transmission, being the world's largest flexible DC transmission project, aimed at transporting clean energy from Tibet to Guangdong [1][4][8]. Project Overview - The Zang-Guangdong DC project spans over 2,600 kilometers, crossing various geographical terrains including the Qinghai-Tibet Plateau and the Yunnan-Guangxi region, with a planned capacity to transmit 43 billion kilowatt-hours of clean energy annually [1][8]. - The project is expected to enhance the renewable energy consumption responsibility weight in Guangdong by 3.8 percentage points and increase power supply capacity by 5 million kilowatts for major cities like Guangzhou and Shenzhen [8]. Technical Challenges and Innovations - The project faces significant technical challenges due to its vast scale and complex environmental conditions, necessitating extensive research and development in high-altitude power transmission technologies [4][11]. - A new energy self-balancing flexible DC converter topology has been developed, which allows for efficient management of surplus energy during grid faults, ensuring system safety and stability [12][13]. Research and Development Efforts - The project has involved rigorous field investigations and data collection, with over 15,000 original data points gathered to support construction planning and environmental assessments [2][3]. - Research teams have conducted numerous high-altitude experiments to understand the electrical behavior in extreme conditions, leading to breakthroughs in high-altitude discharge testing and neutron radiation effects on power devices [5][6]. Strategic Importance - The Zang-Guangdong DC project is pivotal for optimizing national energy resource allocation and enhancing regional economic development, facilitating the transfer of clean energy from the resource-rich west to the economically vibrant east [8][9]. - The project also represents a significant collaboration between major power grid companies in China, aiming for mutual benefits and resource optimization [9][10].