A Real-Time Wide-Area Controller for Mitigating Small-Signal Instability
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.
KeywordsPower System Dominant Mode Phase Compensation Phasor Measurement Unit Power System Model
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.
- 1.C. Taylor, D. Erickson, B. Wilson, and K. Martin. (2002, December 16). Wide-Area Stability and Voltage Control System (WACS) Demostration (Living Document). Available: http://www.transmission.bpa.gov/orgs/opi/index.shtm
- 2.K. Tomsovic, D. Bakken, V. Venkatasubramanian, and A. Bose, “Designing the Next Generation of Real-Time Control, Communication and Computations for Large Power Systems,” IEEE Proceedings, vol. 93, pp. 965–979, May 2005. Google Scholar
- 3.U.S.–Canada Power System Outage Task Force, “Causes of the August 14th Blackout in the United States and Canada,” Interim Rep., Nov. 2003, ch. 6.Google Scholar
- 6.R. L. Lee, M. J. Beshir, A. T. Finley, D. R. Hayes, J. C. Hsu, H. R. Peterson, G. L. DeShazo, and D. W. Gerlach, “Application of static var compensators for the dynamic performance of the Mead-Adelanto and Mead-Phoenix transmission projects,” IEEE Trans. Power Delivery, vol. 10, pp. 459–466, Jan. 1995.CrossRefGoogle Scholar
- 13.J. C. R. Ferraz, N. Martins, and G. N. Taranto, “Simultaneous partial pole placement for power system oscillation damping control,” presented at the IEEE Winter Power Meeting, pp. 1154–1159, Jan. 28 – Feb. 1, 2001.Google Scholar
- 20.G. R. B. Prony, “Essai experimental et analytique sur les lois de la dilatalrlite de fluids elastiques et sur cells de la vapeur de l’alcool, à différents tempoeratures,” Journal de l’Ecole Polytechnique (París), vol. 1, pp. 24–76, 1795.Google Scholar
- 22.P. S. Dolan, J. R. Smith, and W. A. Mittelstadt, “Prony analysis and modeling of a TCSC under modulation control,” in Proc. 4th IEEE Conference on Control Applications, pp. 239–245, Sept. 1995.Google Scholar
- 23.M. Amono, M. Watanabe, and M. Banjo, “Self-testing and self-tuning of power system stabilizers using Prony analysis,” in Proc. IEEE Winter Power Meeting, pp. 655–660, 1999.Google Scholar
- 25.F. M. El-Hefnawi, “Use of Prony’s method for extracting the poles and zeros yielding a wideband window type response of circular antenna arrays,” in Proc. IEEE Radio and Wireless Conference, pp. 201–204, 1998.Google Scholar
- 26.K. F. Sabett, L. P. B. Katehi, and K. Sarabandi, “Wavelet-based CAD modeling of microstrip discontinuities using least square Prony's method,” in Proc. IEEE MTT-S International, pp. 1799–1802, 1997.Google Scholar
- 27.M. Meunier and F. Brouaye, “Fourier transform, wavelets, Prony analysis: tools for harmonics and quality of power,” in Proc. 8th International Conf. Harmonics and Quality of Power, pp. 71–76, 1998.Google Scholar
- 28.A. R. Messina and V. Vittal, “Nonlinear, non-stationary analysis of interarea oscillations via Hilbert spectral analysis,” IEEE Trans. Power Systems, vol. 21, pp. 1234–1241, Aug. 2006.Google Scholar
- 30.J. Xiao, X. Xie, J. Han, and J. Wu, “Dynamic Tracking of Low-frequency Oscillations with Improved Prony Method in Wide-Area Measurement System,” presented at the IEEE Power Meeting, Denver, CO, June 6–10, 2004.Google Scholar
- 31.R. Zivanovic and P. Schegner, “Pre-filtering improves prony analysis of disturbance records,” in Proc. IEE Int. Conf. Developments in Power System Protection, pp. 780–783, 2004.Google Scholar
- 32.M. A. Johnson, I. P. Zarafonitis, and M. Calligaris, “Prony analysis and power system stability-some recent theoretical and applications research,” in Proc. IEEE Power summer Meeting, pp. 1918–1923, 2000.Google Scholar
- 33.BPA/PNNL Dynamic Systems Identification (DSI) Toolbox: Version 3.0.4, Battelle Memorial Institute, 1998.Google Scholar
- 34.G. Liu, J. Quintero, and V. Venkatasubramanian, “Oscillation Monitoring System Based on Wide Area Synchrophasors in Power Systems,” in Proc. Bulk Power System Dynamics and Control, Aug. 2007.Google Scholar
- 38.D. J. Trudnowski, J. M. Johnson, and J. F. Hauer, “SIMO System Identification from Measured Ringdowns,” in 1998 Proc. American Control Conf., pp. 2968–2972.Google Scholar
- 39.V. Venkatasubramanian and J. R. Carroll, “Oscillation Monitoring Sytem at TVA”, presentation at North American Synchrophasor Initiative meeting at New Orleans, LA, March 2008, [Online] Available http://www.naspi.org/meetings/workgroup/2008_march/session_one/tva_oscillation_monitoring_venkatasubramanian.pdf
- 40.P. M. Anderson and A. A. Fouad, Power System Control and Stability. New York: IEEE Press, 1994.Google Scholar
- 41.J. Quintero, “A Real-Time Wide-Area Control for Mitigating Small-Signal Instability in Large Electric Power Systems,” Ph.D. dissertation, Sch. of Electrical Eng. and Comp. Sciences, Washington State Univ., Pullman, 2005 [Online]. Avail.: http://www.dissertations.wsu.edu/Dissertations/Spring2005/j_quintero_011905.pdf