Coordinated control of TCSC and SVC for system damping improvement

This paper proposes a combination of the thyristor controlled series capacitor (TCSC) and static VAr compensator (SVC) installation for enhancing the dynamic performance of a power system. The developed scheme employs a damping controller which coordinates measurement signals to control the TCSC and SVC. The coordinated control method is based on the application of projective controls. The effectiveness of the proposed controller is demonstrated through simulation studies on a single machine to infinite bus system. The simulation results show that the controller can significantly improve the damping performance of the system. In this paper, a current injection model of TCSC is introduced and included in the transmission system model. By using equivalent injected currents at terminal buses to simulate a TCSC no modification of the bus admittance matrix is required at each iteration