A ROBUST CONTROL STRATEGY FOR COORDINATED TCSC AND SVC TO DAMP ELECTROMECHANICAL OSCILLATIONS IN A MULTI-MACHINE POWER SYSTEM

Document Type : Original Article

Authors

Department of Electrical Engineering, Faculty of Engineering Helwan University of Helwan, Cairo,

Abstract


This paper examines the enhancement of power system stability properties via using thyristor
controlled series capacitors (TCSCs) and static VAR compensators (SVCs). A control strategy is
developed to enhance the damping of the electromechanical oscillations using Linear Quadratic
Gaussian technique (LQG). Using this control strategy each device (TCSC and SVC) will
contribute to the damping of electromechanical power oscillations. The power system is examined
over a wide range of operation conditions and different fault locations. Simulation results showed
that the proposed controller with TCSC and SVC provides good damping for the power system and
consequently the dynamic performance is improved. The adopted controller gives a better response
compared to the conventional thyristor controlled series capacitors and static VAR compensator.

Keywords