Core Viewpoint - The Inner Mongolia Electric Power Group's Ulanqab Power Supply Company successfully completed the replacement of transformers and subsequent power restoration, demonstrating commitment to safety and efficiency in operations [1][6]. Group 1: Transformer Replacement - The team replaced a total of 665 kilograms of transformers at the Tunken Team Substation, addressing multiple safety hazards associated with aging equipment, including insulation deterioration and abnormal noise [3][5]. - The old transformers posed significant risks, including potential power outages and failure of protective devices, which could threaten the safety of the power grid [3]. Group 2: Innovative Work Methods - To enhance safety and efficiency, the team implemented an innovative "steel pipe track + hydraulic jack" method for the installation of heavy equipment in confined spaces [3][5]. - The process involved meticulous planning and execution, with workers using tools to ensure precise positioning of the new transformers while avoiding contact with live equipment [3][5]. Group 3: Testing and Troubleshooting - After the installation, the team encountered issues during the power-on test, specifically with the 951 circuit breaker tripping due to a control circuit fault [5]. - The team quickly identified the root cause of the failure as a defect in the locking mechanism of the travel switch and successfully restored power after thorough troubleshooting and adjustments [5]. Group 4: Standardization and Best Practices - The operation not only eliminated significant equipment hazards but also established standardized procedures for replacing heavy equipment in tight spaces, providing valuable experience for similar future tasks [6]. - The company emphasizes meticulous repair work and precise handling, reinforcing its commitment to ensuring the safe and stable operation of the regional power grid during critical periods [6].