国网永安市供电公司：老旧设备更新升级 永安电网焕发“新活力”

Core Viewpoint - The company is actively upgrading and renovating aging power grid equipment to address safety hazards and improve operational efficiency, particularly in preparation for peak summer demand [1][8]. Group 1: Equipment Upgrades - The company replaced a 25-year-old transformer at the 110 kV Kengbian substation with a new 50 MVA low-loss transformer, expected to save over 150,000 kWh annually [3]. - A comprehensive upgrade at the 35 kV Caoyuan substation included replacing 8 old circuit breakers, 16 knife switches, and 11 voltage transformers, extending equipment lifespan by over 15 years [5]. - Deep repairs were conducted on two main transformers at the 110 kV Panlong and Dahu substations, addressing rust and oil leakage issues, enhancing protection capabilities [7]. Group 2: Investment and Impact - The total investment in main network technical upgrades increased by 54.79% year-on-year, completing 10 upgrades that benefit over 80,000 users [8]. - The company is implementing innovative technologies such as prefabricated equipment and intelligent sealing processes to shorten construction periods [8]. - Future plans include a comprehensive assessment and upgrade of aging equipment in line with the "2025-2027 three-year old equipment plan" and the "14th Five-Year Plan for grid technical upgrades" [8].