Simulation research of the multi-variable generalized predictive control in 500MW unit plant coordinated control system

It´ s a key problem to design an effective control strategy for unit plant coordinated control system to improve the automatic control level in thermal engineering. The algorithm of the generalized predictive control (GPC) is extensively used in academic and industrial fields for its simple modular parameters, distinctive robustness and stability. In this paper, from the model of a 500MW boiler-turbine coordinated control system, the multi-variable GPC control strategy has been designed according to this linearized model. The simulation results indicate that, compared with PID, the proposed method can not only track the input set value smoothly and rapidly with smaller overshoot and shorter adjusting time, but also has stronger robust.