Sliding Mode Control Design of TCSC for Robust Power System Stabilization Using Dynamic Compensation Observer Technique

This paper deals with a sliding mode control design of a damping controller of a thyristor controlled series capacitor (TCSC) for an enhancement of power system dynamic stability. The dynamic compensation observer technique is applied to design the hyperplane in a sliding mode control. The designed sliding mode controller of TCSC requires only output information from a power system as a feedback signal. Simulation study in a single machine infinite bus system reveals that the proposed controller is not only able to damp power oscillations due to system disturbances, but is also very robust against various loading conditions and variations of system parameters