基于模型预测控制的互联电网阻尼控制  

Damping Control for Interconnected Power Grid Based on Model Predictive Control

作　　者：段洁[1] 孙正龙[1] 张秀琦[1] 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012

出　　处：《广东电力》2016年第6期78-81,86,共5页Guangdong Electric Power

摘　　要：针对同步发电机电压调节和阻尼改善之间的矛盾,提出一种新的方法来处理多机电力系统中电力系统稳定器(power system stabilizer,PSS)和自动电压调节器(automatic voltage regulator,AVR)的鲁棒协调问题。该方法将模型预测控制(model predictive control,MPC)应用到励磁调节器中,提高了AVR和PSS的鲁棒性。建立多机系统线性化模型,通过模型预测和优化求解,得到励磁控制器的最优控制输入。利用MATLAB/Simulink对典型的"4机2区"电力系统进行测试,仿真结果表明基于MPC的鲁棒协调AVR+PSS方式的控制器可以在保持良好稳态电压调节精度的情况下,增加系统阻尼特性,提高系统动态稳定水平。In allusion to conflict between voltage regulation and damping improvement for synchronous generator,a kind of new method for dealing with robust coordination between power system stabilizer（PSS）and automatic voltage regulator（AVR）of multi-machine power system is presented which applies model predictive control（MPC）in excitation regulator and improves robust of AVR and PSS.Linear model for multi-machine system is established for model prediction and optimization solution and it is able to obtain the optimal control input of the excitation controller.MATLAB/Simulink is used for testing typical two-area four-machine power system and simulation results indicate that the robust AVR＋PSS controller based on MPC is able to increase damping performance and improve dynamic stability of the system in the case of keeping good regulation precision of steady-state voltage.

关 键 词：阻尼控制 模型预测控制 电力系统稳定器 自动电压调节器 低频振荡 

分 类 号：TM712[电气工程—电力系统及自动化]