阿坝—成都东特高压工程第15标段全长约85公里，起于绵阳市三台县，止于德阳市中江县，新建铁塔176基。该段线路主要穿行于凯江流域的丘陵与水网地 带，地形起伏大、交叉跨越密集。据工程川东段业主项目副经理吴昌利介绍，施工人员主要通过全吊车组立塔基、在重要跨越区段两套设备同步作业等方 式，克服施工难点，推动首个标段顺利贯通。 新年伊始，阿坝—成都东1000千伏特高压交流输电工程(以下简称"阿坝—成都东特高压工程")建设迎来"开门红"，施工"进度条"加速刷新。1月1日，在四川 德阳市中江县境内，77米高的N7L035号输电铁塔上，随着牵引走板牵着最后一相导线到达锚线点，第15标段率先实现贯通，成为工程首个顺利贯通的标 段。 现场，一座座崭新的铁塔巍然耸立。电力工人们系着双保险安全绳，站在铁塔上，在寒风中进行附件安装作业。他们脚下，一条条银色导线在设备牵引下缓 缓升起，横跨河谷、翻越山脊，将铁塔相连，勾勒出绿色清洁的能源动脉。 目前，建设者们正全力推进阿坝—成都东特高压工程16个标段建设。全线铁塔基础已全部浇筑完成，组塔作业完成近90%，导线展放完成率超过四成。面对 复杂地质与恶劣多变的气候条件，国网四川建设公司将施工 ...

目前，建设者们正全力推进阿坝—成都东特高压工程16个标段建设。全线铁塔基础已全部浇筑完成，组 塔作业完成近90%，导线展放完成率超过四成。面对复杂地质与恶劣多变的气候条件，国网四川建设公 司将施工任务拆解细化至各节点、各班组，广泛应用基建安全天网、可视化牵张设备等技术手段，高效 安全推进施工。 "现在正是攻坚阶段，工程全线16个标段共3000多名建设者都奋战在这条700多公里的战线上。"工程项 目部常务副主任陈双形容这是一场"两线作战"，"大家坚守一线，就是为了利用好冬季施工的黄金窗口 期，平稳有序推进工程建设。" 德阳市中江县阿坝—成都东1000千伏特高压交流输电工程15标导线展放作业现场，国网四川省电力公司 员工正在安装间隔棒。 现场，一座座崭新的铁塔巍然耸立。电力工人们系着双保险安全绳，站在铁塔上，在寒风中进行附件安 装作业。他们脚下，一条条银色导线在设备牵引下缓缓升起，横跨河谷、翻越山脊，将铁塔相连，勾勒 出绿色清洁的能源动脉。 阿坝—成都东特高压工程第15标段全长约85公里，起于绵阳市三台县，止于德阳市中江县，新建铁塔 176基。该段线路主要穿行于凯江流域的丘陵与水网地带，地形起伏大、交叉跨越密集。 ...

Group 1 - The successful electrification of the 35 kV Jiangyu Bridge Line and Jiangxing Line marks the completion of the 35 kV I Line renovation project from Jiangtai to Xinglong and the capacity expansion of the Xinglong 35 kV substation, providing robust power support for local economic development and electricity demand [1] - The Xinglong substation is the only 35 kV power supply hub in the region, and its existing capacity of 2x10 MVA is insufficient to meet the growing electricity demand due to rapid local economic development [1] - The area surrounding Xinglong Township is a key agricultural region, and the increasing electricity demand is driven by the development of livestock farming and the meat industry [1] Group 2 - During the construction period, the company adhered to the principles of quality first, safety as the foundation, and progress as the guideline, ensuring efficient project execution through meticulous planning and resource allocation [2] - The company implemented strict safety production responsibilities and standardized operational procedures to ensure a safe and orderly construction process, overcoming challenges such as harsh weather and complex working conditions [2] - The project aims to significantly enhance the reliability and stability of the regional power grid, optimize clean energy transmission efficiency, and effectively meet the electricity needs for rural clean heating and industrial development [2]

Core Points - The construction mobilization meeting for the ±800 kV UHVDC project from Southeast Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area has been held, marking the start of the world's largest flexible DC transmission project in terms of transmission capacity, technology level, and investment scale [1][4] - The project is characterized by its "super high, super long, and super large" features, being the first UHV project to cross three geographical plateaus in China [4][5] Group 1: Project Overview - The project has a rated capacity of 10 million kilowatts, making it the strongest in the world in terms of transmission capacity [4] - Approximately 90% of the project route is mountainous, with 30% in high mountain ranges, indicating the challenging construction environment [4][5] - The total investment for the project is around 53.2 billion yuan, with an additional investment of over 150 billion yuan for supporting renewable energy bases [4][5] Group 2: Environmental Impact - Once completed, the project is expected to deliver over 43 billion kilowatt-hours of clean electricity annually to the Guangdong-Hong Kong-Macao Greater Bay Area, equivalent to half of the annual output of the Three Gorges Dam [4][5] - The project will significantly reduce carbon dioxide emissions by approximately 33 million tons and replace about 12 million tons of standard coal consumption [4] Group 3: Economic Implications - The project is anticipated to create over 100,000 direct jobs during peak construction, contributing positively to the economic and social development of Tibet [4][5] - The integration of hydropower, wind power, and solar power in the supporting energy bases is expected to stimulate growth in related upstream and downstream industries [4][5]

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].

Core Insights - The construction of the ±800 kV UHVDC transmission project from Southeast Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area has commenced, representing a significant infrastructure investment in China's energy sector [1] Investment Overview - The total investment for the project is approximately 53.2 billion yuan [1] - The transmission line will span about 2,681 kilometers, crossing four provinces: Tibet, Yunnan, Guangxi, and Guangdong [1] - The rated transmission capacity of the project is 10 million kilowatts [1] Energy Impact - Once fully operational, the project is expected to deliver over 43 billion kilowatt-hours of electricity annually to the load center of the Guangdong-Hong Kong-Macao Greater Bay Area [1] - This annual electricity supply is roughly equivalent to half of the annual output of the Three Gorges Dam [1] - The project will utilize clean energy, replacing approximately 12 million tons of standard coal consumption and reducing carbon dioxide emissions by about 33 million tons [1]

Core Points - The construction mobilization meeting for the ±800 kV UHVDC project from Southeast Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area has been held, marking the start of the world's largest flexible DC transmission project in terms of transmission capacity, technology level, and investment scale [1] Group 1: Project Overview - The project involves a transmission line approximately 2,681 kilometers long, spanning four provinces: Tibet, Yunnan, Guangxi, and Guangdong [1] - The project has a 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, all sourced from clean energy [1] - The project will replace approximately 12 million tons of standard coal consumption and reduce carbon dioxide emissions by about 33 million tons [1] Group 3: Financial Aspects - The total investment for the project is approximately 53.2 billion yuan, with an additional investment of over 150 billion yuan for the supporting "water-wind-solar integrated" power base [1]

Core Insights - The construction mobilization meeting for the ±800 kV UHVDC project, known as the "Tibet-Guangdong DC Project," has been held, marking the start of the world's largest flexible DC transmission project in terms of transmission capacity, technology level, and investment scale [1][2] Group 1: Project Overview - The Tibet-Guangdong DC Project is approximately 2,681 kilometers long, spanning Tibet, Yunnan, Guangxi, and Guangdong provinces, with a starting point in Changdu, Tibet, and an endpoint in Shenzhen, Guangdong [1] - The project has an approved transmission capacity of 10 million kilowatts and is expected to be fully operational by 2029 [1] Group 2: Energy Impact - Upon full operation, the project will deliver over 43 billion kilowatt-hours of clean energy annually to the Guangdong-Hong Kong-Macao Greater Bay Area, which is about half of the annual output of the Three Gorges Dam [1] - The clean energy supplied will replace approximately 12 million tons of standard coal consumption and reduce carbon dioxide emissions by about 33 million tons [1] Group 3: Economic and Industrial Implications - The project is expected to provide a stable supply of green electricity, significantly benefiting high-energy-consuming industries in Shenzhen, such as automotive manufacturing, electronics, and data centers, thereby promoting the clean energy transition in the Greater Bay Area [2]

Core Points - The construction of the Zang-Guangdong DC project, a key cross-regional power transmission project under China's 14th Five-Year Plan, has commenced [1][3] - The project will connect clean energy bases in southeastern Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area, with a total transmission line length of approximately 2,681 kilometers [1][3] - The project will utilize domestically developed, internationally leading ultra-high voltage flexible direct current transmission technology, with a rated voltage of ±800 kV and a transmission capacity of 10 million kW [3] - The total investment for the project is estimated at 53.2 billion yuan [3] Industry Impact - Upon full operation in 2029, the Zang-Guangdong DC project is expected to deliver over 43 billion kWh of electricity annually to the Greater Bay Area, equivalent to half of the annual output of the Three Gorges Dam, and 100% of this energy will be from clean sources [5]

Core Insights - The State Grid Corporation of China has received preliminary approval from Brazil's Renewable Energy Agency (Ibama) for the construction of the "Northeast Brazil Ultra-High Voltage Project" transmission line, marking a significant milestone in the country's infrastructure development [1] Investment Project Details - This project represents the largest transmission concession project in Brazil's history, with an estimated investment of 21 billion Brazilian Reais [1] - The project was independently won by the State Grid Corporation on December 15, 2023, and aims to aggregate and transmit clean energy sources such as wind, solar, and hydroelectric power from northeastern and northern Brazil [1] - The transmission line will pass through Maranhão, Tocantins, and Goiás states, serving the electricity needs of approximately 12 million people in key areas, including the Federal District [1] - The project is scheduled to be operational by 2029, with a concession period of 30 years, and the legal operational date set for March 2030 [1]