Core Viewpoint - The article discusses the construction of the Tibet-Guangdong Direct Current Project, which is the world's most advanced flexible direct current transmission project, aiming to deliver clean energy from the Tibetan Plateau to the Guangdong-Hong Kong-Macao Greater Bay Area over a distance of 2,681 kilometers [1][5]. Group 1: Project Overview - The Tibet-Guangdong Direct Current Project is the first ultra-high voltage project to traverse such complex terrain, facing challenges such as high altitude, frozen ground, geological disasters, and environmental protection [1]. - The project spans 2,681 kilometers, with nearly 90% of the route being mountainous and 30% at high altitudes, reaching a maximum elevation of 5,300 meters [1]. Group 2: Technical Challenges - The project involves significant technical challenges, including conducting high-altitude long air gap discharge tests to understand the electrical field behavior and ensure the safety of converter station equipment [2]. - The team conducted over 3000 discharge tests to gather crucial data for high-altitude operations, overcoming the difficulties posed by low oxygen levels and extreme temperature variations [2]. Group 3: Innovations and Solutions - A new energy self-balancing topology for flexible direct current converters was developed to address the issue of energy surges during grid faults, ensuring the stability of the system [3]. - The project also tackled the challenge of cosmic radiation affecting power devices at high altitudes, leading to the establishment of safety voltage thresholds and measures to reduce failure rates [4]. Group 4: Expected Impact - Upon completion, the project is expected to deliver over 43 billion kilowatt-hours of clean energy annually to the Guangdong-Hong Kong-Macao Greater Bay Area, equivalent to half the annual output of the Three Gorges Dam, enhancing power supply capacity by 5 million kilowatts for both Guangzhou and Shenzhen [5].

Core Points - The construction of the "Tibet-Guangdong DC Project" has commenced, which is a key cross-provincial power transmission project under China's 14th Five-Year Plan, representing the world's strongest transmission capacity and the largest investment scale in flexible DC transmission technology [1] - The project spans approximately 2,681 kilometers across Tibet, Yunnan, Guangxi, and Guangdong, with a total investment of about 53.2 billion yuan and a rated transmission capacity of 10 million kilowatts [1] - The project aims to convert Tibet's resource advantages into economic benefits by facilitating the transmission of clean energy [1] Technical Challenges and Innovations - The project addresses the challenge of integrating large-scale renewable energy in high-altitude areas by employing domestically developed, world-leading flexible DC transmission technology [2] - The technology allows for flexible scheduling of green electricity from different regions and times, ensuring uninterrupted power supply with a transmission time of just 9 milliseconds from Tibet to Guangdong [2] - The collaboration between Southern Power Grid Company and State Grid Corporation aims to tackle significant technical challenges related to high-altitude DC transmission and the integration of renewable energy into weak grids [2] Research and Development Achievements - The research team has conducted over 3000 discharge tests and completed 114 test groups, yielding valuable data for high-altitude discharge [3] - The development of the world's first energy self-balancing flexible DC converter valve and breakthroughs in ultra-long-distance multi-terminal flexible DC fault crossing have been achieved [3] - The project emphasizes digital transformation, aiming to implement machine-based operations in less populated areas and promote digital design and digital twin technology [3] Future Outlook - The Tibet-Guangdong DC Project is expected to be fully operational by 2029, with an annual transmission capacity of over 43 billion kilowatt-hours of clean energy to the Guangdong-Hong Kong-Macao Greater Bay Area, equivalent to half of the annual output of the Three Gorges Dam [3]

Core Points - The article discusses the construction of the Zang-Guangdong ultra-high voltage direct current (UHVDC) transmission project, which spans 2681 kilometers and has a rated transmission capacity of 10 million kilowatts [2][4] - The project aims to deliver over 43 billion kilowatt-hours of clean energy annually to the Guangdong-Hong Kong-Macao Greater Bay Area, equivalent to half the annual output of the Three Gorges Dam [4][10] - The total investment for the Zang-Guangdong project is approximately 53.2 billion yuan, with an additional investment of over 150 billion yuan for the integrated water, wind, and solar power generation base [6][8] Project Overview - The Zang-Guangdong UHVDC project is the world's most powerful and technologically advanced flexible direct current transmission project, featuring four converter stations located in Tibet and Guangdong [2][6] - The project will significantly reduce coal consumption by approximately 12 million tons and decrease carbon dioxide emissions by about 33 million tons [4][6] Technical Aspects - The project employs cutting-edge "multi-terminal flexible direct current transmission" technology, allowing for flexible dispatch of green electricity and minimizing disturbances to the power grid [7][8] - The transmission process is remarkably fast, taking only 0.009 seconds to deliver electricity from Tibet to Guangdong, with a transmission capacity of 2800 kilowatt-hours per second [7][10] Economic Implications - The Zang-Guangdong project is expected to create over 100,000 jobs during peak construction periods and significantly boost the economic development of Tibet [6][8] - The project addresses the energy distribution imbalance in China, where Tibet has abundant clean energy resources while Guangdong has high electricity demand [8][10] Energy Demand Context - Guangdong's electricity consumption has seen a significant increase, with data centers consuming 3.52 billion kilowatt-hours in the first half of the year, a year-on-year growth of 44.43% [9][10] - The project is crucial for supporting the Greater Bay Area's ambitions to become a "computing power hub," as the demand for electricity is directly linked to advancements in artificial intelligence and data processing [8][10]

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]

Core Viewpoint - The construction of the Zang-Guangdong DC project, the world's most powerful and advanced flexible DC transmission project, has commenced, aiming to enhance clean energy transmission from Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area [1] 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 [1] - The project will include four converter stations located in Changdu and Linzhi in Tibet, as well as Guangzhou and Shenzhen in Guangdong [1] - Upon full operation in 2029, the project is expected to deliver over 43 billion kilowatt-hours of electricity annually to the Greater Bay Area, equivalent to half of the annual output of the Three Gorges Dam, with 100% being clean energy [1] Group 2: Technical Challenges and Solutions - The project faces significant challenges due to its geographical route, which includes traversing the Qinghai-Tibet Plateau, Yunnan-Guizhou Plateau, and South China hills, with nearly 90% of the route being mountainous terrain [1] - The instability of renewable energy generation presents additional challenges for the construction of the Zang-Guangdong project [1] - To ensure the smooth delivery of green electricity to Guangdong, 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 [1] - The technology enables the transmission of green electricity from Tibet to Guangdong in just 9 milliseconds [1]

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].

Core Viewpoint - The construction of the Tibet-Guangdong Direct Current Project, a key cross-provincial power transmission project under China's 14th Five-Year Plan, has commenced, aiming to deliver clean energy from Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area, with a total transmission capacity of over 43 billion kilowatt-hours annually after full operation in 2029, equivalent to half of the annual output of the Three Gorges Dam [2][5]. Group 1 - The Tibet-Guangdong Direct Current Project starts in southeastern Tibet and traverses Yunnan and Guangxi, covering approximately 2,681 kilometers, with four converter stations built in Tibet and Guangdong [1][4]. - The project utilizes advanced "Ultra-High Voltage Multi-Terminal Flexible Direct Current" technology to manage the instability of renewable energy generation, ensuring a stable power supply with minimal disruption to the grid, allowing for the transmission of green electricity from Tibet to Guangdong in just 9 milliseconds [7]. - The renewable energy installed capacity at the starting point in southeastern Tibet reaches 10 million kilowatts, highlighting the region's potential for clean energy generation [4].