Frequency-limited pseudo-optimal rational Krylov algorithm for power system reduction

Umair Zulfiqar, Victor Sreeram, Xin Du

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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,ω 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.

Original languageEnglish
Article number105798
JournalInternational Journal of Electrical Power and Energy Systems
Publication statusPublished - Jun 2020


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