Determination of best location of SVC device for damping oscillations

Abstract

This paper proposes a residue factor method to obtain the optimal location of the Static Var Compensator (SVC) device to damp out the inter-area mode of oscillations. The residue method is base on the facts that it is the product of the mode’s Observability and controllability index of SVC controllers to the critical mode. The placements of SVC controllers have been obtained for the base case and for the dynamic critical contingences. Eigen value analyses are used to assess the most appropriate input signals (stabilizing signal) for supplementary damping control of SVC. The Right-Half Plane zeros (RHP-zeros) and Hankel Singular Value (HSV) is used as tools to select the most receptive signal to a mode of the Interarea oscillation. The effectiveness of the proposed method of placement and selection of signals are demonstrated on practical network of 25 bus south Malaysian Power system.