A Real-Time Wide-Area Controller for Mitigating Small-Signal Instability

  • Jaime Quintero
  • Vaithianathan Mani Venkatasubramanian
Part of the Power Electronics and Power Systems book series (PEPS)


This work proposes a real-time centralized controller for addressing small-signal instability-related events in large electric power systems. The proposed system is meant to be a safety net type control strategy that will detect and mitigate small-signal stability phenomena as they emerge in the system. Specifically, it will use wide-area monitoring schemes to identify the emergence of growing or undamped oscillations related to inter-area and/or local modes.

The damping levels of the associated inter-area and local oscillatory modes will be estimated by analyzing predefined sets of signals using multi-Prony method. Rules are developed for increasing multi-Prony method’s observability and dependability. These rules are applied to simulated signals, but also to real noisy measurements.

Rules for operating the SVC (static VAR compensator) controls in the damping enhancement mode and for the application of the multi-Prony algorithm on detecting the onset of the oscillations are proposed and tested in a two-area power system and in large-scale simulation example. The controller is shown to be effective on a validated western American large-scale power system model of the August 10, 1996 blackout event.


Power System Dominant Mode Phase Compensation Phasor Measurement Unit Power System Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by funding from Power Systems Engineering Research Center (PSERC) and by Consortium for Reliability Technology Solutions (CERTS), funded by the Assistant Secretary of Energy Efficiency and Renewable Energy, Office of Distributed Energy and Electricity Reliability, and Transmission Reliability Program of the US Department of Energy under Interagency Agreement No. DE-AI-99EE35075 with the National Science Foundation. Partial funding of the work from Bonneville Power Administration is also gratefully acknowledged. J. Quintero received partial support from Universidad Autónoma de Occidente and Colciencias–Fulbright–Laspau.


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Copyright information

© Springer Science+Business Media,LLC 2009

Authors and Affiliations

  • Jaime Quintero
    • 1
  • Vaithianathan Mani Venkatasubramanian
    • 1
  1. 1.Faculty of EngineeringUniversidad Autónoma de OccidenteCali-ValleColombia

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