Adaptive Power System Stabilizer tuning technique for damping inter-area oscillations

The adaptive Power System Stabilizer (PSS) tuning method for damping inter-area oscillation is presented in this paper. The primary focus is to adaptively improve the observability of the PSS reflecting the changing operating conditions in order to achieve effective damping towards Inter-Area oscillations. The proposed design approach is considered to be an indirect approach since the PSS parameters are not altered. Instead, the algorithm modulates the PSS input signal by mixing local and remote generator rotor speeds. Simulations are conducted in DIgSILENT and PSS/E to verify the performance of the proposed method.