Determination of suitable locations for power system stabilizers and static VAr compensators for damping electromechanical oscillations in large scale power systems

Abstract
The authors present efficient algorithms for the solution of two important problems in the area of damping control of electromechanical oscillations in large-scale systems. The proposed algorithms allow the determination of the most suitable generators for installing power system stabilizers, and the most suitable buses in the system for placing static VAr (reactive volt-ampere) compensators in order to damp the critical modes of oscillation. The algorithms involve the calculation of transfer function residues and represent an important development of the methodology proposed by V. Arcidiacono et al. (1980), the use of which was restricted to power systems of limited size. Another major aspect of this methodology is that there is no limitation on the degree of modeling of the power system being studied.