电力“动脉”连陕甘

Core Viewpoint - The completion of the Shaanxi Xiazhou-Gansu Qingyang North 750 kV transmission project marks a significant step towards enhancing the interconnection of the northwest energy grid, facilitating the transmission of renewable energy from Shaanxi to Gansu and beyond [1][4]. Group 1: Project Overview - The Shaanxi Xiazhou-Gansu Qingyang North 750 kV transmission project has successfully connected, entering the pre-commissioning acceptance phase [1]. - The project spans 99 kilometers within Shaanxi and is a crucial part of the supporting AC network for the East Gansu-Shandong UHV DC project [1][4]. - The project aims to enhance the power exchange capacity between Shaanxi and Gansu, thereby supporting the transmission of electricity from Shaanxi to Shandong [1]. Group 2: Construction Challenges - The construction faced significant challenges due to the complex geological conditions of the Loess Plateau and extreme winter temperatures, with temperatures dropping to -20 degrees Celsius [2][3]. - The project team implemented detailed construction plans and insulation measures to ensure the quality of concrete under low temperatures [2]. - Over 213 days, the team successfully completed the foundation pouring for 209 tower bases without any quality defects [2]. Group 3: Operational Strategies - The project team developed a "sandstorm combat" strategy to address safety risks posed by severe weather conditions during construction [3]. - Continuous monitoring of weather conditions allowed the team to execute construction safely during favorable weather windows [3]. - The team successfully completed critical overhead line crossings despite challenging weather, demonstrating effective teamwork and problem-solving [3]. Group 4: Future Impact - Once operational, the project is expected to significantly enhance the power delivery capacity of the East Gansu-Shandong UHV DC project, potentially increasing the annual electricity export from northern Shaanxi by several billion kilowatt-hours [4]. - The project will facilitate the integration of renewable energy sources such as wind and solar power in the revolutionary old areas of Shaanxi and Gansu, promoting industrial transformation and creating job opportunities [4].