Through the analysis of the shutdown event of low feed water flow for 350 MW units

the matters needing attention in the operation of feed water system and the switchover of steam supply system for boiler feed pump turbine under accident conditions are put forward. The design optimization scheme for the steam supply system of boiler feed pump turbine in power plants is put forward

The design problems and operation modes are discussed

and the steam supply of boiler feed pump turbine is pointed out. In the design of the system

factors such as system stability in the process of switching between heating pipe and steam source should be fully taken into account. At the same time

accident expectation should be made

and relevant regulations should be strictly followed in the operation process.The same type of units can refer for this event.