基于改进蝙蝠算法的水电站机组频率控制

Frequency Control of Hydropower Unit Based on Improved Bat Algorithm

针对水轮机调速系统存在非线性、时变性、传统PID控制精度差、鲁棒性不强等缺点,在传统PID基础上引入改进蝙蝠算法对控制器进行优化。该算法以控制器调节时间、频率误差的绝对值为目标函数,在给定范围内找到一组PID参数使目标函数最优,再把这组参数代入到PID控制器中对系统进行控制。结果表明该算法具有较高的控制精度、更快的响应速度,其控制性能较传统PID控制器有显著的提高。

Aiming at the disadvantages of hydraulic turbine governing system,such as non-linearity,time-varying,poor precision of traditional PID control and weak robustness,an improved bat optimization algorithm is introduced to optimize the controller on the basis of traditional PID.The algorithm takes the absolute values of controller s adjusting time and frequency error as objective functions.A set of PID parameters in a given range is found to make the objective function optimization,and then these parameters are substituted into the PID controller to control the system.The results show that the algorithm has higher control accuracy and faster response speed.Compared with the traditional PID controller,the control performance has a significant improvement.