西门子超超临界汽轮机结构独特、布置紧凑,机组启动速度快、运行平稳、效率高,但大量的汽轮机保护也增加了机组跳闸的概率。针对非常规的汽轮机跳闸保护条件,分析了跳闸产生的原因、可采取的措施以及可能引起的后果,提出了保留、修改和取消部分跳闸条件的建议,可为该类机组保护条件的设置提供一定参考。 Siemens ultra-supercritical steam turbine has unique structure, compact layout, fast start-up speed, smooth operation and high efficiency. However, a large amount of turbine protection also increases the probability of unit trip. Aiming at unconventional turbine trip protection conditions, the reasons for the trip, the possible measures taken and the possible consequences are analyzed. Suggestions for retaining, modifying and canceling some tripping conditions are provided, which may provide certain protection conditions for such units reference.