目前，火电机组普遍存在发电机过频保护与汽轮机超速保护之间的配合问题。
At present the matching problems between the generator over frequency protection and turbine over speed protection exist commonly in coal-fired power units.
如何降低甩负荷时汽轮机组的动态超速始终是汽轮机控制系统设计的重要任务之一。
How to decrease the overspeed while the steam turbine suddenly lose full load is one of the important problems to design the control system of the steam turbine.
近年来从国外引进的大型汽轮机保安系统大都采用了无机械危急遮断器的设计，超速跳闸是通过电气装置实现的；
The majority of turbine security system that introduced from abroad adopts no machinery crisis interpeter's design, and realizes super speed trip with eletric installation.
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