This paper presents Improved Invasive Weed Optimization (IIWO) for solving optimal reactive power problem. Particle Swarm Optimization (PSO) has been combined with Invasive weed optimization (IWO) to enhance exploration & exploitation capability for solving the optimal reactive power Problem. In this paper, the idea of intelligent swarming, social cooperation, competition, and reproduction in an optimization meta-algorithm has been merged.In order to evaluate the efficiency of the proposed algorithm; it has been tested on IEEE 57 bus system and simulation results reveals about the best performance of the proposed algorithm in reducing the real power loss.

Invasive weed, optimal reactive Power dispatch,Transmission loss

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