On-line modal analysis based on synchronized measurement technology

H. Saitoh, K. Miura, O. Ishioka, H. Sato, J. Toyoda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

Abstract

This paper proposes a new approach for modal analysis of a large power system that is based on the on-line system identification by using the synchronously measured responses of remote machines. Since the power system is identified as a linear dynamic system, the eigenanalysis can provide the damping constants, modal frequencies and mode shapes of the weakly damped electromechanical modes that appear in the measurer: responses at an operating point. In the paper, it is also discussed how to select a small number of the machines suitable for detecting slow oscillatory modes and estimating the eigenvalues of slow modes. Such machines can be found out by utilizing the slow coherency observed in the global motion between groups of machines. The verification of the new modal analysis and the coherency based machine selection is done by simulation studies of a 3-machine and 9-bus system, and a 25-machine and 66-bus system.

Original languageEnglish
Title of host publicationPowerCon 2002 - 2002 International Conference on Power System Technology, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages817-822
Number of pages6
ISBN (Electronic)0780374592, 9780780374591
DOIs
Publication statusPublished - 2002 Jan 1
EventInternational Conference on Power System Technology, PowerCon 2002 - Kunming, China
Duration: 2002 Oct 132002 Oct 17

Publication series

NamePowerCon 2002 - 2002 International Conference on Power System Technology, Proceedings
Volume2

Other

OtherInternational Conference on Power System Technology, PowerCon 2002
Country/TerritoryChina
CityKunming
Period02/10/1302/10/17

Keywords

  • modal analysis
  • slow coherency
  • synchronized measurement
  • system identification

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

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