| The coordinated control system for fossil-fired boiler-turbine unit is usually featured by multi-variable, strong couple, large delay, nonlinear characteristics, the conventional control strategy can not meet the requirement of the grid, thus the study for effective advanced control scheme is essential for the economic and stable operation of the unit. Given the fact that model predictive control can effectively solve the couple between variables, this paper designs a multivariable generalized predictive controller (GPC) for a 330MW boiler-turbine unit model with two inputs and two outputs. The stimulation result is compared with the traditional PID controller's using Matlab programming. The results show that GPC gets a good performance under different power conditions. |
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