The main function of the LNG import terminal is LNG receiving

storage and re-gasification

then supplying natural gas to power plants and city users by pipelines.Through building the dynamic models of each equipment in the LNG import terminal

and adding the necessary control systems

the process was simulated in dynamic mode

and then three operation conditions of the LNG import terminal were analyzed

including seasonal peak shaving

ship unloading and tank overpressure.During the peak shaving of LNG terminal

the power consumption of LNG send-out pump and in-tank pump changed with the same trend as the flow rate of export nature gas.Compressor power consumption and inlet flow rate of re-condenser

including BOG and LNG were affected by the ship unloading condition

which spent 13 h for the entire process.During the tank overpressure accident

which spent 15.2 h for the entire process

compressor power consumption

re-condenser pressure and inlet flow rate of re-condenser changed with the adjustment of compressor load.Finally

some suggestions on the design and operation of the LNG import terminal were proposed.