Impact of Model Detail of Synchronous Machines on Real-time Transient Stability Assessment

Johannes Tilman Gabriel Weckesser, Hjörtur Jóhannsson, Jacob Østergaard

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In this paper, it is investigated how detailed the model of a synchronous machine needs to be in order to assess transient stability using a Single Machine Equivalent (SIME). The results will show how the stability mechanism and the stability assessment are affected by the model detail. In order to identify the transient stability mechanism, a simulation with a high-order model was used as reference. The Western System Coordinating Council System (WSCC) and the New England & New York system are considered and simulations of an unstable and a stable scenario are carried out, where the detail of the machine models is varied. Analyses of the results suggest that a 4th-order model may be sufficient to represent synchronous machines in transient stability studies.
Original languageEnglish
Title of host publicationProceedings of 2013 IREP Symposium
Number of pages9
Publication date2013
ISBN (Print)978-1-4799-0199-9
Publication statusPublished - 2013
Event2013 IREP Symposium: Bulk Power System Dynamics and Control - Rethymnon, Greece
Duration: 25 Aug 201330 Aug 2013


Conference2013 IREP Symposium


  • General Topics for Engineers
  • Power
  • Energy and Industry Applications
  • Generators
  • Power system stability
  • Rotors
  • Stability criteria
  • Transient analysis

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