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Encyclopedia of Systems and Control pp 1–6Cite as

Time-Scale Separation in Power System Swing Dynamics: Singular Perturbations and Coherency

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Abstract

Large power systems often exhibit slow and fast electromechanical oscillations between interconnected synchronous machines. The slow interarea oscillations involve coherent groups of machines swinging together. This coherency phenomenon can be attributed to the coherent areas of machines being weakly coupled, either because of higher impedance transmission lines, heavily loaded transmission lines, or fewer connections between the coherent areas compared to the connections within a coherent area. Singular perturbations can be used to display the time-scale separation of the slow interarea modes and the faster local modes.

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Author information

Authors and Affiliations

  1. Electrical & Computer Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA

    Joe H. Chow

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  1. Joe H. Chow
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Correspondence to Joe H. Chow .

Editor information

Editors and Affiliations

  1. Electrical and Computer Engineering, Boston University, Boston, Massachusetts, USA

    John Baillieul

  2. Automation and Control Solutions, Honeywell, Golden Valley, Minnesota, USA

    Tariq Samad

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© 2014 Springer-Verlag London

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Chow, J.H. (2014). Time-Scale Separation in Power System Swing Dynamics: Singular Perturbations and Coherency. In: Baillieul, J., Samad, T. (eds) Encyclopedia of Systems and Control. Springer, London. https://doi.org/10.1007/978-1-4471-5102-9_261-1

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  • DOI: https://doi.org/10.1007/978-1-4471-5102-9_261-1

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  • Publisher Name: Springer, London

  • Online ISBN: 978-1-4471-5102-9

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