JPS_V3_N1_RP3 K. Rajalashmi S.U. Prabha Journal on Power Systems Engineering 2322–0376 3 1 23 28 Cost, Loss, Voltage Stability Index, Loadability, Optimization In this paper, particle swarm optimization technique is proposed for Multi-Objective Optimal Power Flow problem. Various optimization techniques are applied to solve the power flow problem with cost, loss and voltage stability objectives in the literature. In this paper, particle swarm optimization technique is proposed to optimize the objectives of Cost, Transmission Loss, Voltage Variation, Voltage Stability Index, Power Mismatch and Maximum Loadability in multimode and analysis of the power flow problem is done in detail. This proposed approach has been evaluated on the standard IEEE 30 bus test system and simulated using MATLAB 8.1. February – April 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3356