The effective role of AVR and PSS in power systems: frequency response analysis

G. Dudgeon, W.E. Leithead, J. O'Reilly, J.R. McDonald

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Two tradeoffs in the effectiveness of automatic voltage regulators (AVRs) and power system stabilizers (PSSs) are investigated together for the first time. The first is the effect of a high-gain fast response AVR on decreasing power system oscillation stability as well as increasing transient stability, and vice versa. The second is that a PSS can reduce transient stability by overriding the voltage signal to the exciter as well as increasing oscillation stability, and vice versa. In essence, the actions of the AVR and PSS devices are dynamically interlinked. A novel Bode frequency response framework for dynamic analysis of AVR and PSS performance and tradeoffs is presented. Bode frequency response also assists with the determination of suitable generator locations for PSSs and the assessment of robustness under changing power system operating conditions.
LanguageEnglish
Pages1986-1994
Number of pages9
JournalIEEE Transactions on Power Systems
Volume22
Issue number4
DOIs
Publication statusPublished - 1 Nov 2007

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Voltage regulators
Frequency response
Dynamic analysis
Electric potential

Keywords

  • frequency response
  • power system
  • dynamic stability
  • power system management
  • transient stability
  • voltage regulators

Cite this

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abstract = "Two tradeoffs in the effectiveness of automatic voltage regulators (AVRs) and power system stabilizers (PSSs) are investigated together for the first time. The first is the effect of a high-gain fast response AVR on decreasing power system oscillation stability as well as increasing transient stability, and vice versa. The second is that a PSS can reduce transient stability by overriding the voltage signal to the exciter as well as increasing oscillation stability, and vice versa. In essence, the actions of the AVR and PSS devices are dynamically interlinked. A novel Bode frequency response framework for dynamic analysis of AVR and PSS performance and tradeoffs is presented. Bode frequency response also assists with the determination of suitable generator locations for PSSs and the assessment of robustness under changing power system operating conditions.",
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The effective role of AVR and PSS in power systems : frequency response analysis. / Dudgeon, G.; Leithead, W.E.; O'Reilly, J.; McDonald, J.R.

In: IEEE Transactions on Power Systems, Vol. 22, No. 4, 01.11.2007, p. 1986-1994.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The effective role of AVR and PSS in power systems

T2 - IEEE Transactions on Power Systems

AU - Dudgeon, G.

AU - Leithead, W.E.

AU - O'Reilly, J.

AU - McDonald, J.R.

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AB - Two tradeoffs in the effectiveness of automatic voltage regulators (AVRs) and power system stabilizers (PSSs) are investigated together for the first time. The first is the effect of a high-gain fast response AVR on decreasing power system oscillation stability as well as increasing transient stability, and vice versa. The second is that a PSS can reduce transient stability by overriding the voltage signal to the exciter as well as increasing oscillation stability, and vice versa. In essence, the actions of the AVR and PSS devices are dynamically interlinked. A novel Bode frequency response framework for dynamic analysis of AVR and PSS performance and tradeoffs is presented. Bode frequency response also assists with the determination of suitable generator locations for PSSs and the assessment of robustness under changing power system operating conditions.

KW - frequency response

KW - power system

KW - dynamic stability

KW - power system management

KW - transient stability

KW - voltage regulators

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DO - 10.1109/TPWRS.2007.908404

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JO - IEEE Transactions on Power Systems

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