Abstract Reactive power management has grown more crucial for increased synchronization in modern power systems. since transmission loss minimization is a basic condition for secure power system operation. This paper proposes the Oppositional-based Harris Hawk Optimizer technique as an advanced meta-heuristic nature inspired methodology. which is applied on the conventional Ward Hale ... https://countryscenesaddleryandpetsuppliers.shop/product-category/eggbutt/