The application of TCSC for damping inter-area oscillations

This paper presents a wide area control scheme using TCSC for damping inter-area oscillation. In general, TCSC are facilitated over long transmission lines to enhance the power transmission capability. As the inter-area oscillations are associated with heavy power transfer over long transmission corridors, the small signal/oscillatory stability can be improved if an additional damping control can be integrated into the control scheme of TCSC. The paper presents the classic and additional damping control scheme of TCSC. The typical two-area power system and control scheme that are built using `DIgSILENT PowerFactory´, and the damping control is tested through the classic modal analysis and simulations in time domain.