Simulation Research on Breaking Performance of 550kV 80kA SF 6 Circuit Breaker under Different Opening Characteristics

With the continuous development of the power grid, the short-circuit current of the line is getting higher and higher. In some areas, the rated short-circuit current has been increased from 63kA to 80kA, which puts forward new requirements for the improvement of the breaking performance of the existing 550kV circuit breakers. In order to develop the arc chamber of 550kV 80kA circuit breaker and an...