Supplementary signal of SVC for damping torsional oscillation

A method is proposed in this paper to select supplementary signals for a static var compensator in IEEE first benchmark model. Different input output controllability analyses are used to assess the most appropriate supplementary signals for the static var compensator (SVC) for achieving effective damping of torsional oscillations. After placing the SVCs based on their primary functions, the most appropriate input signal for supplementary controller is also selected. The eigenvalues and Hankel singular values of the system are computed incorporating various supplementary signals in the SVC for selecting the best supplementary signal.