水电能源科学

针对抽水蓄能机组调速系统调节对象呈现高度非线性特性，PID控制在一定程度上无法满足机组的高品质运行要求的问题，针对抽水蓄能调速系统设计了线性/非线性自抗扰切换控制器，并引入事件触发机制作为控制器切换的条件；然后设计滤波器防止观测器输出的信号值产生突变使机组振动；最后，在抽水蓄能机组空载开机与发电机负荷波动工况下，对基于事件触发的自抗扰切换控制器进行仿真，结果表明所设计的控制器综合了线性自抗扰控制与非线性自抗扰控制的优点，具有更强的鲁棒性。

Due to the highly nonlinear characteristics of the control object in the speed regulation system of pumped-storage units, PID control can no longer fully meet the high-quality operational requirements of the units. Therefore, a linear/nonlinear active disturbance rejection switching controller was designed for the speed regulation system of pumped-storage units. An event-triggered mechanism was introduced as a condition for switching between the controllers. Additionally, a filter was designed to prevent abrupt changes in the observer's output signals, which could cause unit vibrations. Finally, simulations were conducted under conditions of no-load startup and generator load fluctuations to evaluate the event-triggered active disturbance rejection switching controller. The results show that the designed controller combines the advantages of both linear and nonlinear active disturbance rejection control, offering stronger robustness.