葛洲坝二江电厂线性最优励磁控制器建模及参数优化

葛洲坝二江电厂线性最优励磁控制器以最优控制理论为基础，以机端电压，发电机有功出力和机端民量频率为状态量，以机组励磁电压为控制量，针对反馈增益的选择问题，在运用试探法进行仿真计算的基础上，从机组运行工况，转速测量和现场干扰等方面讨论了反馈增益国的选择原则，仿真计算和现场试验表明，所提出的模型和最优反馈增益是正确的，对提高华中电网的电压稳定水平是有益的，可以减少切换荷量。

MODELING AND PARAMETERS OPTIMIZATION OF LINEAR OPTIMAL EXCITATION CONTROLLER FOR GEZHOUBA ERJIANG HYDROPOWER PLANT

On the basis of the optimal control theory, the linear optimal excitation controller in Gezhouba Erjiang Hydropower Plant takes active power output, generator terminal voltage and frequency as state variables and the excitation voltage as control variable. For the selection of feedback gain factor, on the basis of simulation calculation by heuristic method the principle selecting feedback gain is discussed in the respects of operating condition of generating sets, the measurement of rotating speed and on-site disturbance. Simulation calculation results and on-site tests show that the presented model and optimal feedback gain presented are correct and are beneficial to decrease the amount of load rejection.