Research Article Open Access

Mitigation Voltage Sag in Power System by Static Synchronous Compensator

Prechanon Kumkratug1
  • 1 Division of Electrical Engineering, Faculty of Engineering at Si Racha, Kasetsart University, 199 M.6, Tungsukhla, Si Racha, Chonburi, 20230, Thailand


Problem statement: The disturbance in power system is unavoidable situation. It cause in voltage sag in power system. Approach: This study applied the STATCOM to mitigate voltage of the system. The mathematical model of power system equipped with a STATCOM is systematically derived. The presented mathematical model is shown how it effects on voltage sag improvement. The simulation results are tested on a Single Machine Infinite bus. The proposed method is equipped in sample system with severe disturbance. The variation voltage of the system without and with a STATCOM is plotted and compared. Results: It was found that the system without a STATCOM has high voltage variation especially voltage sags whereas with a STATCOM the system voltage has small voltage sages. Conclusion: From the simulation results, the STATCOM can mitigate voltage of power system.

American Journal of Applied Sciences
Volume 7 No. 12, 2010, 1558-1561


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

How to Cite: Kumkratug, P. (2010). Mitigation Voltage Sag in Power System by Static Synchronous Compensator. American Journal of Applied Sciences, 7(12), 1558-1561.

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  • Power system
  • transient stability
  • Flexible AC Transmission (FACTS)
  • synchronous
  • Unified Power Flow Controller (UPFC)
  • thyristor controlled phase shifter
  • High Voltage Direct Current (HVDC)
  • leakage reactance
  • control strategy
  • equivalent
  • complex power
  • voltage sag
  • Single Machine Infinite Bus (SMIB)