A runback test of unit is conducted in Shanwei power plant

and the test result is analyzed.Focusing on the faults in the test

such as fan vibration due to coal grinder trip

rapid open of main steam valve due to high pressure slipping rate of the set value of main steam pressure

and fast rise of water level in No.3 high-pressure heater

modifications of the fan control logic and the pressure slipping rate of the set value of main steam pressure are performed

and the urgent drain valve is pre-opened to a certain extent.Satisfactory control result is achieved via these measures.