Nuclear power plant drain tank liquid level control loop model and creation and simulation method thereof

The invention discloses a nuclear power plant drain tank liquid level control loop model and a creation and simulation method thereof, and the modeling method comprises the following steps: S1, selecting a modeling object, and analyzing main equipment contained in the modeling object; s2, acquiring a system equipment code of the modeling object in the nuclear power plant; s3, acquiring a drawing file of main equipment according to the system equipment code; s4, extracting logic functions of modeling objects and logic parameters of main equipment according to the drawing file; and S5, creating a nuclear power plant drain tank liquid level control loop model in the simulation modeling tool according to the logic function of the modeling object and the logic parameters of the main equipment, and reserving a signal interface at power equipment of the nuclear power plant drain tank liquid level control loop model. The modeling method is clear in modeling object selection, simple in parameter obtaining path and sui