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Fast calculation of modal interaction in large power systems using spectral decompositions of Gramians ?

机译:使用克朗尼亚人的光谱分解在大型电力系统中的模态交互的快速计算

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The solutions of Lyapunov and Sylvester equations can be represented as a sum of Hermitian matrices or sub-Gramians corresponding either to individual eigenvalues of the system or their pairwise combinations. The sub-Gramians corresponding to a given part of the spectrum of dynamical system can be used to estimate the modal interaction in this part of the spectrum. In this paper we propose an algorithm for the fast calculation of sub-Gramians for large electric power systems. Our numerical tests demonstrate that the sub-Gramians corresponding to the selected part of the spectrum can be calculated much faster than all sub-Gramians of the system. Therefore, the proposed algorithm can serve as a basis for the fast calculation of modal interactions in large-scale power systems in real time.
机译:Lyapunov和Sylvester方程的解决方案可以表示为对应于系统的单个特征值的密封矩阵或亚克的总和或其成对组合。对应于动态系统频谱的给定部分对应的子克的子克估计估计频谱的这部分中的模态相互作用。在本文中,我们提出了一种算法,用于大型电力系统的次克的快速计算。我们的数值测试表明,对应于频谱的所选部分对应的子雷峰可以比系统的所有子克拉人更快地计算。因此,所提出的算法可以作为实时基于大型电力系统中的模态交互的基础。

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