Bringing steam on and withdrawing steam from the steam turbine "two-pull-one" type gas-steam combined cycle unit are two comparatively complex operating processes

improper operating mode may result in large impulse to the said unit

practice of study on the said type of steam trubine shows that the operating mode of simultaneously bringring main steam and reheated steam on and withdrawing them from "two-pull-one" type combined cycle unit has strong suitability to load

boasting good operability

and being helpful to stabilize operation of said unit.