During valve conversion by DEH in start-ups of the unit,the turbine speed is stable with fluctuation not greater than 5 r/min,satisfying the requirement of DEH turbine speed control.

• 结果是在机组的各次起动中,汽轮机转速在DEH进行阀门切换过程中非常稳定,转速波动不超过5r/min,满足了DEH汽轮机转速控制的要求。