Subsynchronous oscillations part 1 — comprehensive system stability analysis

J. M. Undrill, T. E. Kostyniak

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


This paper describes a frequency response method for analyzing the stability of subsynchronous oscillations in power systems, as modeled by a number of synchronous machines and an extensive series compensated transmission network. This method allows the simultaneous detailed modeling of all machine shafts and control loops, and hence permit-s investigation of possible interaction in the subsynchronous oscillation frequency band between machines in different plants. An example application of the method indicates that such interactions may, indeed, occur.

Original languageEnglish (US)
Pages (from-to)1446-1455
Number of pages10
JournalIEEE transactions on power apparatus and systems
Issue number4
StatePublished - 1976
Externally publishedYes

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • General Engineering
  • Electrical and Electronic Engineering


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