Optimal Parameter Tuning of Power Oscillation Damper by MHHO Algorithm

This paper describes the damping nature offered by power system stabilizer (PSS) and static synchronous compensator (STATCOM) under system perturbations. The parameters of the damping devices are obtained from the novel natural inspired Harris hawks algorithm (HHA). Further, the modified version of Harris hawks algorithm is proposed with logarithmic function for escaping energy of prey for better damping characteristics for the system states. The damping natured offered to the system states under perturbations and eigenvalues of the system are analyzed with the proposed technique. The system study is conducted for different loading conditions, and the proposed algorithm is compared with state-of-the-art algorithms, namely, grey wolf optimization, and moth flame optimization. The control action offered by STATCOM and PSS also investigated for the coordinated operation during different system operating conditions.