二次再热机组再热汽温系统PID优化控制

PID Optimal Control for Reheat Steam Temperature System of Double Reheat Unit

本文选用带偏差调节的PID控制策略来调节二次再热机组的再热汽温,然后运用差分进化算法对PID控制器进行参数寻优。结果表明,该控制系统表现出良好的控制品质,对模型的不确定和扰动表现出较强的鲁棒性和适应性,较好地解决了该系统强耦合、大惯性的控制难点。

In this paper,the PID control strategy with deviation adjustment is used to adjust the reheat steam temperature of two reheat units,then the PID controller is optimized by differential evolution algorithm.The results show that the control system exhibits good control quality,shows strong robustness and adaptability to the uncertainties and disturbances of the model,and solves the difficulty of strong coupling and large inertia control.