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基于贡献因子的广域信号优选方法

, PP. 174-183

Keywords: 低频振荡,区间理论,贡献因子,鲁棒性

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Abstract:

从提高反馈信号阻尼效果的角度出发,提出一种基于贡献因子的反馈信号优选方法。首先利用区间扩张理论和摄动理论将各反馈信号对闭环特征根的阻尼效果进行量化,并据此提出贡献因子的概念,然后利用贡献因子之和表征的系统总阻尼效果优选信号。IEEE4机11节点系统和16机68节点系统的频域和时域仿真结果表明:基于贡献因子优选的反馈信号可协调不同类型的附加控制器,且适用于不同的控制规律;同时,还能够显著提高整个系统的阻尼水平,且控制效果与利用全部信号的控制效果相当,在系统运行方式发生变化的情况下具有一定的鲁棒性。

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