同步发电机非线性PID励磁控制

本文将一种非线性ＰＩＤ控制引人发电机励磁控制，这种控制方式既保留了非线性ＰＩＤ控制的结构简单，易于实现，鲁椿性较强的优点，同时又克服了线性ＰＩＤ控制效果受线性化模型限制的缺点。计算机仿真结果表明，与线性化最优发电机励磁控制相比，非线性ＰＩＤ控制器对于同步发电机运行点变动的适应范围要宽得多，所设计的控制规律显著地改善了电力系统暂态过程的动态响应。

NONLINEAR PID METHOD FOR DESIGNING EXCITATION CONTROLLAW OF SYNCHRONOUS GENERATOR

This paper deals with power system stability control by a novel nonlinear PID method.This control method retains the virtue of the linear PID control,simple in structure,easy to be realized and strong robustness,in the same time,it overcomes the shortcoming of the linear PID control that is limited by linear model.The numerical simulation results show that the effect of the nonlinear PID controller under a wider range of operating conditions is very good,mean the robustness and the adaptability is enhanced to a large extent,that the dynamic responses of power system to which the generator is connected are obviously improved.The steady state stability and transient stability of power system are also improved by the control law in large degree.This improved PID control is a simple and effe ctive method to reform that excitation regulator that makes use of linear PID control at present.