基于非线性模型的励磁控制系统仿真研究

A STUDY OF SIMULATION OF THE EXCITATION CONTROL SYSTEMS BASED ON NONLINEAR MODEL

本文针对同步发电机的励磁控制系统,基于经典的PID方案和现代的状态反馈(SFB)方案,设计了几种新型的励磁控制方案,同时,比较了这些方案与常规的PID、PID加PSS和SFB方案对励磁控制系统的影响,所用模型为非线性。仿真结果表明,本文所提出的几种控制方案对于提高电力系统运行的品质指标、抑制系统的振荡、增加系统的鲁棒性等是有益的,并且利于用微机实现。

Several new control strategies are developed in this paper for the excitation control systems of synchronous generators that are based on the classic PID strategy and the modern state feedback(CFB)strategy, comparing the efficacy of these new control strategies on the excitation control systems with that of PID, PID+PSS and SFB strategies. Nonlinear model is adopted, which approximates the real case for better. The simulation results show that the presented control strategies are much more efficient to suppress the oscilation, raise the robustness and the dynamic performance index of the systems. And these new strategies can be easily realized by muroprocessors.