单元机组负荷多变量动态矩阵控制的仿真研究

Simulation Research of Multi-variable Dynamic Matrix Control for Boiler-turbine Units

由于单元机组负荷控制系统滞后和延迟较大,耦合严重,而多变量动态矩阵控制对模型精度要求不高,对惯性、延迟和耦合的适应能力较强,且有很强的鲁棒性,因此,把多变量动态矩阵控制用于单元机组负荷控制系统。仿真研究结果表明,该系统负荷响应速度较快,主蒸汽压力波动和控制量变化较小,取得了比较满意的控制效果。

Boilerturbine unit has the characteristics of large inertia,long time delay and strong coupling. The multivariable dynamic matrix control scheme has better adaptability to such delay and coupling band is suitable to the boilerturbine unit load system. Simulation results show that this system presents faster load response speed, small mainsteam pressure fluctuation and manipulated variable variation.