我自研高性能变压器保护技术规模化应用

Core Viewpoint - The China Electric Power Research Institute has developed a "high-performance transformer inter-turn protection technology" that has been successfully applied in the State Grid Corporation's UHV and HVDC converter stations, addressing a long-standing technical challenge in the industry and enhancing the safety of large-scale AC and DC power grids [1][2] Group 1: Technology Development - The new protection technology significantly reduces the action time from 50-60 milliseconds to 20 milliseconds, effectively mitigating the risk of serious faults in transformers [1] - The technology is based on a new principle that utilizes the differences in phase sequence differential current characteristics to provide rapid protection against developing inter-turn faults [1] Group 2: Application and Impact - Since 2022, the developed transformer protection technology has been implemented in 21 UHV and HVDC converter stations, with over 2000 units operating successfully [2] - The project represents a full-chain innovation from theoretical research to large-scale application, enhancing the safety operation level of transformers and supporting the upgrade of domestic high-end equipment protection technology [2] - The core technology aligns with China's "dual carbon" goals, contributing to the stable operation of large-scale AC and DC power grids [2]