Research On The Model And Control Systems Of The GE9FA Heavy-duty Gas Turbine

The model of heavy-duty gas turbine is very important to study the dynamics, and itcan help to design the system’s controller and is good to understand combined-cyclepower plant. However, the literature about the gas turbine’s model and control systemare relatively small in our country, so it is necessary to study the model and controlsystems.This paper forms a new model combined Rowen model with IEEE model andextract the parameters through practical data. Finally, it is tested that the new model isvalid as the consequence of the simulation via matlab-simulik is similar to IEEE model.This illustrates that this model can be used in partial load conditions which is theshortcoming of Rowen model and avoids the complex computation of IEEE model.Therefore, the model offfers a new thought and method for the study of the gas turbinemodel.Temperature control and speed control are important to heavy-duty gas turbine, andthe control effect is directly related to running effectively even normally. IMC controllerand fractional-order PID is respectively proved better than traditional PID because of thetwo former controller’s robustness. IMC controller and fractional-order PID are attractingmore and more researchers to study. Here three control methods mentioned above areapplied to the temperature control loop and speed control loop, and we use thematlab-simulink to study the two loops’ dynamics. Besides, we add the disturbance forfurther study the three controllers’ capacity of resisting disturbance. At last, from thecomparisons of the control effectiveness, we find that both IMC controller andfractional-order PID are more advantage than PID. Finally, the output value of the twocontrols are proved that they can be realized due to the value is within a reasonablerange.