Studies for the integration of a TCSC in a transmission system

Series capacitors are widely used in long distance transmission systems to improve stability of power transmission. Thyristor-controlled series capacitors provide additional benefits for the transmission system compared to fixed series capacitors. During a project to realize a series capacitor several studies are required, starting with planning studies, studies that investigate possible interaction with the surrounding system, and finally the capacitor component design. Different parties are involved in these studies, as information is required from the transmission system on one side, but also from the series capacitor and its components. This paper describes the studies and shows typical results.