Real-Time Modal Analysis of Electric Power Grids– The Need for Dynamic State Estimation

Marcos Netto, V. Krishnan, L. Mili, Pranav Sharma, V. Ajjarapu
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引用次数: 1

Abstract

We articulate the reason why dynamic state estimation is needed to push the boundaries of the modal analysis of electric power grids in real-time operation. Then, we demonstrate how to unravel linear and nonlinear modes by using the extended dynamic mode decomposition along with estimates of the synchronous generators’ rotor angles and rotor speed deviations from nominal speed. The estimated modes are associated with electromechanical oscillations that take place continuously in electric power grids because of imbalances between power generation and demand. The numerical simulations are performed on a synthetic, albeit realistic, 2,000-bus network that was designed to resemble the electric power grid of Texas.
电网的实时模态分析——动态状态估计的必要性
本文阐述了在电网实时运行中需要动态估计来突破模态分析的局限的原因。然后,我们演示了如何通过使用扩展的动态模态分解以及同步发电机转子角度和转子转速与公称转速偏差的估计来解开线性和非线性模式。估计模态与由于发电和需求之间的不平衡而在电网中持续发生的机电振荡有关。数值模拟是在一个合成的,尽管是真实的,2000总线网络上进行的,这个网络被设计成类似于德克萨斯州的电网。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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