Corrective control: Stability analysis of unified controller combining frequency control and congestion management

O. O. Khamisov, T. S. Chernova, J. W. Bialek, S. H. Low

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

1 Citation (Scopus)

Abstract

This paper analyses stability of the Unified Controller (UC) that combines frequency control and congestion management and therefore makes it possible to move from preventive to corrective power system control. Earlier work by the authors of UC proved asymptotic stability of the methodology but the proof was based on a simplified first-order model of the turbine and turbine governor. We show that a higher order model of the turbine governor leads to eigenvalues with small but positive real parts. Consequently, we develop a modification of the methodology that decouples the physical and control systems and therefore results in all the eigenvalues having negative real parts. We illustrate the effectiveness of the modification on a realistic model of 39-bus model of New England power system implemented in Power System Toolbox (PST).

Original languageEnglish
Title of host publicationNEIS 2018 - Conference on Sustainable Energy Supply and Energy Storage Systems
PublisherVDE VERLAG GMBH
Pages15-20
Number of pages6
ISBN (Electronic)9783800748211
Publication statusPublished - 2020
Event6th Conference on Sustainable Energy Supply and Energy Storage Systems, NEIS 2018 - Hamburg, Germany
Duration: 20 Sep 201821 Sep 2018

Publication series

NameNEIS 2018 - Conference on Sustainable Energy Supply and Energy Storage Systems

Conference

Conference6th Conference on Sustainable Energy Supply and Energy Storage Systems, NEIS 2018
Country/TerritoryGermany
CityHamburg
Period20/09/1821/09/18

Keywords

  • Congestion management
  • Distributed control
  • Power system dynamics
  • Power system frequency control

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