Voltage disturbances such as sags, swells, and harmonic distortions remain a critical challenge in modern distribution systems, particularly with the growing integration of renewable energy sources and nonlinear loads. This study proposes an adaptive Dynamic Voltage Restorer (DVR) integrated with a Battery Energy Storage System (BESS), optimized using a hybrid metaheuristic framework combining the Self-Adaptive Osprey Optimization Algorithm (S-OOA) and Hybrid Golden Jackal-Hippopotamus Algorithm (HGJHA). The proposed DVR-BESS model demonstrates rapid response and enhanced stability under...