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Youla Parameterization Robust Control Strategy Considering Power System Uncertainties

机译:考虑电力系统不确定性的Youla参数化鲁棒控制策略

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摘要

In view of the reduced low-frequency oscillation damping effect caused by inaccurate modeling of the power system due to various uncertainties, a Youla parameterization robust control strategy considering system uncertainties is proposed in this article. First, the uncertainties of the measurement error and parameter estimation are described by the perturbation matrix, and the convex polytopic model is utilized to describe uncertainties caused by variation of the operating point. Then, by solving the H_2/H_∞ inequalities, the Youla parameterization matrix is gained. Finally, the output error of the actual system to the nominal system is introduced to the output feedback control link via the Youla parameterization matrix. Thus, tracking control of the output error can be realized, as well as H_2/H_∞, robust control of the system. Simulation results show that the proposed method is immune to internal and external uncertainties. Compared with control methods without considering uncertainties, the proposed method is capable of damping low-frequency oscillation faster and more effectively with better robust performance.
机译:鉴于由于各种不确定性而导致的电力系统建模不正确导致的低频振荡阻尼效应的降低,本文提出了一种考虑系统不确定性的Youla参数化鲁棒控制策略。首先,利用扰动矩阵描述了测量误差和参数估计的不确定性,利用凸多面体模型描述了由于工作点变化而引起的不确定性。然后,通过求解H_2 /H_∞不等式,获得Youla参数化矩阵。最后,通过Youla参数化矩阵将实际系统到标称系统的输出误差引入到输出反馈控制链接中。因此,可以实现对输出误差的跟踪控制以及系统的H_2 /H_∞鲁棒控制。仿真结果表明,该方法不受内部和外部不确定性的影响。与不考虑不确定性的控制方法相比,该方法能够更快,更有效地阻尼低频振荡,并具有更好的鲁棒性能。

著录项

  • 来源
    《Electric Power Components and Systems》 |2014年第12期|1152-1157|共6页
  • 作者单位

    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, 102206 Beijing, China;

    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China;

    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China;

    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China;

    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China;

    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Inter-area oscillation; Youla parameterization; uncertainties; polytopic model; wide-area control; low frequency oscillation; robust control; dynamic stability; HVDC control; H_2/H_∞ control;

    机译:区域间振荡;Youla参数化;不确定性多主题模型广域控制;低频振荡鲁棒的控制;动态稳定性高压直流输电控制H_2 /H_∞控制;

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