Core Insights - The Qinghai-Tibet DC Phase II Expansion Project has been operational for a month, enhancing the transmission capacity from 600,000 kW to 1,200,000 kW, and has delivered 370 million kWh of electricity, marking a 62.8% increase compared to the same period in 2024 [1][2] Group 1: Project Overview - The Qinghai-Tibet interconnected project is China's first "power highway" into Tibet, operational since December 2011, effectively addressing the region's electricity shortages and hydropower consumption issues [1] - The project has cumulatively transmitted 24.13 billion kWh of electricity over nearly 14 years, with 13.87 billion kWh from Qinghai to Tibet and 10.26 billion kWh from Tibet to Qinghai [1] Group 2: Expansion Details - The expansion project was initiated in May 2024 to meet the growing electricity demand and green energy export needs in Tibet, involving upgrades to the Chaidamu and Lhasa converter stations and the control systems [2] - The project achieved a full capacity transmission of 1.2 million kW within the first month of operation, demonstrating stable and controllable system performance [2]

Core Points - The "Electric Power Highway" 2.0 version has doubled its transmission capacity from 600,000 kW to 1,200,000 kW [1] - Since its operation one month ago, the expanded project has delivered a total of 370 million kWh, representing a 62.8% increase compared to the same period in 2024 [1] - The project supports high-quality economic development in Tibet and facilitates large-scale clean energy delivery, promoting green and low-carbon development in the Qinghai-Tibet region [1] Project Overview - The Qinghai-Tibet DC Phase II expansion project was initiated by the State Grid Corporation of China in May 2024, involving capacity upgrades at the Chaidamu and Lhasa converter stations and a comprehensive upgrade of the original control system [2] - The expansion project officially commenced operations on September 28, 2025 [2] Historical Context - The Qinghai-Tibet interconnected project, operational since December 2011, serves as the first "Electric Power Highway" into Tibet, connecting Xining in Qinghai to Lhasa in Tibet [1] - Over nearly 14 years of stable operation, the project has transmitted a total of 24.13 billion kWh, with 13.87 billion kWh delivered from Qinghai to Tibet and 10.26 billion kWh sent from Tibet to Qinghai [1]

Core Insights - The Qinghai-Tibet DC Phase II Expansion Project has officially commenced operations, doubling the power transmission capacity between Qinghai and Tibet to 1.2 million kilowatts, which is significant for enhancing power supply security in Tibet and optimizing the allocation of clean energy [1][2] Group 1: Project Overview - The Qinghai-Tibet DC interconnected project is the first "power highway" into Tibet, serving as a green channel for power transmission during both wet and dry seasons [1] - The Phase I project, which was completed in 2011, utilized conventional DC technology with a rated voltage of ±400 kV and a line length of 1,038 kilometers [1] - The total investment for the Phase II expansion project is 2.603 billion yuan, which was approved in February 2024, began construction in May, and was completed on September 28, 2023 [1] Group 2: Technical and Operational Enhancements - The project includes capacity upgrades at the Chaidamu and Lhasa converter stations, increasing the transmission power from 600,000 kW to 1.2 million kW, along with a comprehensive upgrade of the existing control systems to enhance flexibility and reliability [1] - The upgraded transmission capacity will allow for winter power delivery to Tibet, meeting 35% of the region's electricity demand during the dry season, thus addressing the electricity shortage in winter [2] - The project is expected to increase the annual clean energy export from Tibet to 2.1 billion kWh, leveraging the advantages of a large interconnected grid to meet the power supply needs of Qinghai and facilitate the absorption of clean energy in Tibet [2] Group 3: Broader Industry Impact - The State Grid Corporation is accelerating the construction of a new power system, having established the world's largest UHV transmission network, with cross-provincial and cross-regional transmission capacity exceeding 370 million kW, a 61% increase from the end of the 13th Five-Year Plan [2] - This infrastructure development provides strong support for ensuring reliable power supply and promoting green and low-carbon development [2]

Core Insights - The Qinghai-Tibet DC Phase II Expansion Project has officially commenced operations, doubling the power transmission capacity between Qinghai and Tibet to 1.2 million kilowatts, which is crucial for enhancing electricity supply security in Tibet and optimizing the allocation of clean energy [1][2] Group 1: Project Overview - The project aims to meet the growing electricity demand in Tibet and improve the bidirectional transmission capacity of the Qinghai-Tibet DC interconnected project [2] - The total investment for the project is 2.603 billion yuan, with construction starting in May 2023 and operations beginning on September 28, 2023 [2] - The project includes upgrades to the existing control systems, enhancing flexibility and reliability [2] Group 2: Technical Achievements - The project is notable for being the first in China to adopt a converter parallel scheme and to expand on an existing operational project at a high altitude [2][4] - The transmission capacity will allow for winter electricity supply to Tibet, meeting 35% of the region's electricity needs during dry seasons [2] - The project will increase the annual clean energy transmission from Tibet to 2.1 billion kilowatt-hours, leveraging the advantages of a large interconnected grid [3] Group 3: Challenges and Innovations - The construction faced significant challenges due to high altitude, with the project site located at 3,850 meters above sea level, where oxygen levels are about 60% of that at sea level [4] - A medical base was established on-site to ensure the health and safety of construction personnel [4] - The project has increased the number of operational modes from 45 to 117, enhancing its operational flexibility [3][4] Group 4: Strategic Importance - The project supports the national strategy for energy security and the transition to a new power system, contributing to the largest UHV transmission network globally [4] - The cross-regional transmission capacity has increased by 61% from the end of the 13th Five-Year Plan, now exceeding 370 million kilowatts [4] - The company is committed to ensuring early operation and effectiveness of projects while balancing development and safety [4]