arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.03221math.OC
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电力系统区域间振荡的投入产出分析与分散最优控制

Input-output analysis and decentralized optimal control of inter-area oscillations in power systems

Xiaofan Wu, Florian Dörfler, Mihailo R. Jovanović

摘要:

大容量电力系统中的局部和区域间振荡通常使用阻尼差模式的空间分布来识别,并且通过仔细调谐的分散控制器来减轻它们。在本文中,我们采用非模态工具来分析和控制区域间的振荡。我们的输入-输出分析研究随机强迫系统的功率谱密度和方差放大,并提供了相对于模态方法的新见解。为了改善传统广域控制策略的局限性,我们还研究了稀疏和块稀疏广域控制器的信号选择和最优设计问题。在我们的设计中,我们保持旋转对称的电力系统,只允许在分布式控制器的相对角度测量。对于IEEE 39新英格兰模型,我们研究了不同控制架构的性能权衡和鲁棒性,并表明完全分散控制策略的最优重调可以有效地防止局部和区域间振荡。

英文摘要:

Local and inter-area oscillations in bulk power systems are typically identified using spatial profiles of poorly damped modes, and they are mitigated via carefully tuned decentralized controllers. In this paper, we employ non-modal tools to analyze and control inter-area oscillations. Our input-output analysis examines power spectral density and variance amplification of stochastically forced systems and offers new insights relative to modal approaches. To improve upon the limitations of conventional wide-area control strategies, we also study the problem of signal selection and optimal design of sparse and block-sparse wide-area controllers. In our design, we preserve rotational symmetry of the power system by allowing only relative angle measurements in the distributed controllers. For the IEEE 39 New England model, we examine performance tradeoffs and robustness of different control architectures and show that optimal retuning of fully-decentralized control strategies can effectively guard against local and inter-area oscillations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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