An Integrated Method for Optimal Placement and Tuning of a Power System Stabilizer Based on Full Controllability Index and Generator Participation

In this paper, an integrated architecture for optimal placement and tuning of power system stabilizers (PSSs) in multimachine systems is proposed in order to improve system stability, damp oscillations, and increase damping of the power system oscillatory modes. The proposed approach provides full-rank optimal conditions for the PSS placement, which provide complete controllability of the system. In addition, this method allows optimal tuning of PSS parameters based on real and imaginary coefficients for damping. Test cases are performed to evaluate the proposed concept, and it has been found that the proposed architecture fully captures system dynamics and provides an efficient way for PSS placement and tuning. The architecture is also verified using a real-time digital simulator on a real experimental test bed and found that the method provides improvement in system stability and reduces low-frequency oscillations in local and inter-area modes of oscillations.