Limit cycles in power systems due to OLTC deadbands and load-voltage dynamics

Mats Larsson, Dragana H. Popović, David J. Hill

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Abstract

In this paper, the phenomenon of limit cycle due to load-tap changer interaction is investigated. The role of OLTC deadband in creating a limit cycle phenomenon is addressed. The impact of tap dynamics modelling on system/voltage behaviour is carefully considered. Analytical insights into observed behaviour of power systems with different tap models are given using eigenvalue analysis, the describing function method and time simulation. The conditions for occurrence of limit cycles and the identification of key parameters influencing their characteristics are another important aspect of this investigation.

Original languageEnglish
Pages (from-to)181-188
Number of pages8
JournalElectric Power Systems Research
Volume47
Issue number3
DOIs
Publication statusPublished - 1 Nov 1998
Externally publishedYes

Keywords

  • Limit cycles
  • Load-voltage dynamics
  • OLTC deadbands

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