最高电压等级环保气体绝缘装备投入运行

Core Viewpoint - The successful operation of China's first 550 kV C4 environmentally friendly gas-insulated metal-enclosed transmission pipeline marks a significant advancement in the application of eco-friendly electrical equipment, providing a viable alternative to SF6 gas, which has high greenhouse gas potential [1][2]. Group 1: Technological Development - The C4 gas, with a greenhouse effect potential only one-tenth that of SF6 and an insulation strength 2.2 times greater, is recognized internationally as a promising substitute for SF6 [1]. - The core technology for C4 gas had been monopolized by foreign entities until its domestic industrial production was achieved in 2019 through collaboration between State Grid Anhui Electric Power Company and China Electric Power Research Institute [2]. Group 2: Implementation and Performance - The first 12 kV C4 gas ring network cabinet was successfully operated in Anhui in May 2021, demonstrating excellent performance over more than four years of stable operation [2]. - The recent commissioning of the 550 kV C4 environmentally friendly GIL signifies a major breakthrough in the engineering application of C4 gas in ultra-high voltage equipment [2]. Group 3: Future Plans - The research team at State Grid Anhui Electric Power Company plans to collaborate with various academic and industrial partners to further develop key technologies for C4 gas, aiming to create a comprehensive technology matrix for its application across the entire power grid [2].