In this paper, a computationally efficient frequency-limited model reduction algorithm is presented for large-scale interconnected power systems. The algorithm generates a reduced order model which not only preserves the electromechanical modes of the original power system but also satisfies a subset of the first-order optimality conditions for H2;! model reduction problem within the desired frequency interval. The reduced-order model accurately captures the oscillatory behavior of the original power system and provides a good time- and frequency-domain accuracy. The proposed algorithm enables fast simulation, analysis, and damping controller design for the original large-scale power system. The efficacy of the proposed algorithm is validated on benchmark power system examples.

中文翻译：

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用于电力系统降维的限频伪最优有理Krylov算法

在本文中，针对大规模互连电力系统提出了一种计算效率高的频率限制模型约简算法。该算法生成的降阶模型不仅保留了原始电力系统的机电模式，而且还满足 H2 的一阶最优性条件的子集；！所需频率区间内的模型缩减问题。降阶模型准确地捕捉了原始电力系统的振荡行为，并提供了良好的时域和频域精度。所提出的算法能够对原始大规模电力系统进行快速仿真、分析和阻尼控制器设计。在基准电力系统示例上验证了所提出算法的有效性。