中国首次实现5000米级高海拔超高压等电位带电作业

Core Viewpoint - The State Grid Corporation of China has successfully conducted the first high-altitude live working operation at an elevation of 5,211.5 meters, setting a new world record for ultra-high voltage live working at high altitudes [1][2] Group 1: Project Details - The operation took place near the Tangula Mountain Pass, specifically at tower 1382, which is at an elevation of 5,211.5 meters, and another operation was conducted at tower 1134 in the Yanshiping area at 4,691 meters, both setting new world records [2] - This operation is part of the ±400 kV Qinghai-Tibet interconnection project, which is China's first "electricity highway" into Tibet, completed in late 2011, enabling the integration of the Tibet power grid with the national grid [1] Group 2: Operational Significance - The Qinghai-Tibet interconnection project addresses the seasonal electricity shortages in Tibet, particularly during winter, and the challenges of hydropower consumption in summer [1] - The average elevation of the Chaila DC segment of the project is 4,650 meters, and it traverses permafrost, making maintenance operations extremely challenging [1] Group 3: Safety and Reliability - The operation is crucial as Tibet is currently experiencing peak electricity demand, and any minor issues could escalate into significant problems [1]