Research Article Open Access

Nonlinear Control Design of Series FACTS Devices for Damping Power System Oscillation

Prechanon Kumkratug1
  • 1 Department 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 the complicated network of power system may cause in nonlinear response. Static Synchronous Series Compensator (SSSC) is a power electronic based device that has the capability of controlling the line current. This study applies the SSSC to decrease the over line current in power system during dynamic state. Approach: This study proposes the control strategy of a SSSC to enlarge the stability region of a simple power system. The control is determined very carefully to satisfy the Lyapunov’s stability criterion and is found to be a non-linear function of system states. The proposed nonlinear control of SSSC for damping power system oscillation is investigated through the sample system. Results: The maximum generator rotor angle of the faulted system without a SSSC is continuously oscillation and the maximum value is much more than the system with a SSSC. Conclusion: SSSC based the proposed nonlinear control can damp power system oscillation.

American Journal of Applied Sciences
Volume 8 No. 2, 2011, 124-128


Submitted On: 22 January 2011 Published On: 28 February 2011

How to Cite: Kumkratug, P. (2011). Nonlinear Control Design of Series FACTS Devices for Damping Power System Oscillation. American Journal of Applied Sciences, 8(2), 124-128.

  • 2 Citations



  • Power system stability
  • power system oscillation
  • FACTS devices
  • static synchronous series compensator
  • Static Synchronous Series Compensator (SSSC)
  • Single Machine Infinite Bus (SMIB)
  • voltage injection
  • voltage source
  • short circuit