Subsynchronous interactions with static VAR compensators-concepts and practical implications

In 1987, planning for the installation of a static VAr compensator (SVC) in Chester, Maine, was initiated. Project participants were concerned that the SVC might have an impact on torsional modes of vibration of nearby turbine-generators. A study was conducted to gain understanding of the phenomenon and to quantify the potential impact of the SVC on torsional damping. This work describes the analytical techniques used in the study and summarizes the key results.<
>