Optimal Reactive Power Dispatch using Hybrid Grey Wolf Optimization Technique

In this paper, Hybrid Grey Wolf Optimization (HGWO) method is used to find the set of optimal control variables of Optimal Reactive Power Dispatch (ORPD) problem, such as generators terminal voltage, position of tap changers of transformers, and number of switchable capacitor banks. The performance and feasibility of the proposed algorithm are demonstrated through IEEE 30-bus system. Comparison of obtained results with simple GWO technique and other methods reported in the literature shows clearly the superiority of HGWO algorithm over other recently published algorithms in regards to real power transmission losses minimization hence confirmation of the efficiency of HGWO algorithm in providing optimal solution.