Dynamic performance and robustness of the proposed UPSO-based BESSDC under varying conditions: (a) Active power at varying FSC, showing suppression of SSR oscillations; (b) Electromagnetic torque at varying wind speed (m/s), indicating improved damping; (c) Performance comparison in terms of settling time and oscillation reduction; (d) Robustness and consistency comparison among unoptimized, PSO-based, and UPSO-based BESSDC.