For homemade 125 MW steam turbinegenerator set with double direct firing boilers of a unitized system

the rotationimpulsing of intermediate pressure cylinder and reaching a constant rotation speed had been realized in test after major repair by using extraction steam from neighbouring unit under nonignition condition of the boiler proper

and all tests and trial synchronization for parallel connection with the power network after major repair of the unit being further completed. Compared with traditional scheme

the new test scheme can save fuel oil of more than 160 t

saving production cost of more than 60000 yuan(RMB).