国网庆阳供电公司：顺利完成南佐变电站2号主变能效提升改造工程

Core Viewpoint - The successful completion of the 110 kV Nanzuo Substation's transformer efficiency enhancement project marks a significant advancement in the safety and stability of the power grid in Qingyang, providing a new power engine for the upcoming winter peak demand [1][7]. Group 1: Project Implementation - The project is the first self-implemented transformer renovation by the State Grid Qingyang Power Supply Company, utilizing an integrated installation method to address traditional challenges such as long replacement times and high operational risks [1][3]. - A multi-departmental task force was established early in August to refine the construction plan, ensuring safety and efficiency from the outset [3]. - The new transformer has a capacity increase from 31.5 MVA to 50 MVA, achieving national first-class energy efficiency standards [7]. Group 2: Construction Techniques - The innovative integrated installation method reduced the core power outage period from at least 15 days to only 9 days, enhancing power supply reliability by 40% [3]. - The project also included the simultaneous replacement of current transformers and inspections of switchgear, minimizing the impact of repeated power outages on users [3]. Group 3: Safety and Quality Control - The company implemented a 24-hour safety monitoring system at the construction site, focusing on critical operations such as lifting and hot work, and utilized drones for comprehensive safety inspections [4]. - A strict "three-level acceptance" system was enforced, ensuring that each phase of the project met quality standards before proceeding [5]. Group 4: Future Plans - The company aims to leverage the experience gained from this project to accelerate the intelligent transformation of equipment and enhance training for its workforce [7]. - There is a commitment to optimize standardized management at the grassroots level, improving the overall capability for self-implemented projects and supporting high-quality local economic development through reliable power supply [7].