励磁控制系统灰色预测PID控制仿真研究

基于MATLAB对同步发电机灰色预测PID励磁控制进行仿真研究.仿真中同步发电机采用派克模型,保证了灰色预测原始数据的非负性,简化了灰色预测算法,并对稳态工况下灰色预测的处理以及原始数据采样周期等问题进行了探讨,解决了灰色预测PID控制在稳态情况下预测失控的问题.仿真结果表明:在不同工作点下,同步发电机灰色预测PID励磁控制与常规PID控制相比较,灰色预测PID励磁控制的超调量和调节时间都明显减小,控制效果优于常规PID控制.

Study on Simulation of Grey Prediction PID Control on Excitation Control System

A simulation study of excitation control on synchronous generator has been conducted based on MATLAB.The study employs PARK model as the synchronous generator's model,which guarantees the nonnegative original data in grey prediction module and simplified the procedure of grey prediction.The problem of dealing with grey prediction module under steady state and selection of sample period of original data is discussed,avoiding the problem that grey prediction PID loses control under steady state.The simulation results show that grey prediction PID excitation control is better than general PID excitation control,because its extraordinary quantity and regulating time under different work conditions are both smaller and shorter.