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电网技术  2014 

无模型自适应广域阻尼控制设计方法

DOI: 10.13335/j.1000-3673.pst.2014.02.019, PP. 395-399

Keywords: 无模型自适应控制,阻尼控制,非线性,电力系统

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Abstract:

电力系统的运行方式和结构的时变特性越来越突出,传统广域阻尼控制器(conventionalwide-areapowersystemstabilizer,CWAPSS)由于参数固定,无法保证系统在不同运行状态下的控制效果。为此,文章采用无模型自适应控制(modelfreeadaptivecontrol,MFAC)算法实现了具有自适应功能的广域阻尼控制器的设计。首先讨论了MFAC算法的基本原理;然后通过分析比较WAPSS和MFAC算法参数之间的关系,给出了MFAC算法的参数设置方法;最后,通过四机两区系统的仿真验证了MFAC算法的有效性。仿真结果表明在系统结构发生变化时,无模型自适应广域阻尼控制器能够在线调整控制器参数,控制效果优于CWAPSS。

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