Research Article Open Access

Power System Oscillations Damping Using Unified Power Flow Controller-Based Stabilizer

Lokman H. Hassan1, M. Moghavvemi1 and Haider A.F. Mohamed2
  • 1 Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
  • 2 Department of Electrical and Electronic Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Malaysia


Problem statement: The Phillips-Heffron model of a power system with UPFC published by AJAS, demonstrates the effect of the UPFC in improving power system oscillation stability. Unfortunately, some of the equations have not been correctly derived and so working with this model in its existing form is misleading. Approach: In this study, the model is revisited and the equations are re-derived obtaining correct results. Three-machine power system installed with a UPFC is used to investigate the validity of these equations. Results: The simulation results demonstrated that the corrected model with an effective controller is active on damping of the low-frequency oscillations under different operating conditions. Conclusion: The corrected model works properly with power system networks for enhancing power system stability.

American Journal of Applied Sciences
Volume 7 No. 10, 2010, 1393-1395


Submitted On: 22 December 2009 Published On: 31 October 2010

How to Cite: Hassan, L. H., Moghavvemi, M. & Mohamed, H. A. (2010). Power System Oscillations Damping Using Unified Power Flow Controller-Based Stabilizer. American Journal of Applied Sciences, 7(10), 1393-1395.

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  • Phillips-Heffron model
  • UPFC
  • low-frequency oscillations