Higher order dynamic equivalents for power systems

S. Ahmed-Zaid, P. W. Sauer, J. R. Winkelman

Research output: Contribution to journalArticlepeer-review


A methodology for obtaining dynamic equivalents of a detailed power system is presented. Two types of reduced order models are developed: a model describing the local behaviour in each area and a model describing the global behaviour between areas. The centre-of-area variables developed for the global model describe equivalent aggregate machines and clarify the nature of the aggregate models. A ten-machine example illustrates the theory.

Original languageEnglish (US)
Pages (from-to)489-494
Number of pages6
Issue number4
StatePublished - Jul 1986


  • Power system modelling
  • perturbation techniques
  • power system dynamics
  • power system simulation
  • system order reduction

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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