Short and long-term dynamic voltage instability

Md Jahangir Hossain, Hemanshu Pota, Valery Ugrinovskii

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

20 Citations (Scopus)


This paper presents a novel approach to capture the development of dynamic voltage instability caused by the dynamics of different power system devices, such as loads, generators, automatic voltage regulators (AVR), overexcitation limiters (OXL), power system stabilizers (PSS), and on-load tap changing (OLTC) transformers using an accurate time-domain analysis. A small power system model is presented which allows one to analyse combinations of these effects, showing how different major forms of long-term and short-term dynamic voltage instability occur. Effects of line tripping, sudden change of load, and fault clearing time on dynamic voltage instability will also be discussed. Finally, advantages of the dynamic analysis over the static analysis will be investigated.

Original languageEnglish
Title of host publicationProceedings of the 17th World Congress, The International Federation of Automatic Control, Seoul, Korea, July 6-11, 2008
Place of PublicationAmsterdam, Netherlands
Number of pages6
ISBN (Print)9783902661005
Publication statusPublished - 2008
Event17th World Congress, International Federation of Automatic Control, IFAC - Seoul, Korea, Republic of
Duration: 6 Jul 200811 Jul 2008

Publication series

NameIFAC Proceedings Volumes


Other17th World Congress, International Federation of Automatic Control, IFAC
Country/TerritoryKorea, Republic of


  • Dynamic interaction of power plants
  • Load flow and stability calculations
  • Modeling
  • Operation and control of power systems


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