Economic Load Dispatch using Modified Particle Swarm Optimization

Abstract

Modified particle swarm optimization technique is presented in this thesis work to solve economic load dispatch (ELD) problem taking into account the functional constraints of power system. The theory of modified PSO involves modification in the velocity of each particle in such a manner that every particle in the swarm try to improve its velocity and position based on an -factor which helps it to achieve the feasible solution easily and a -factor in order to exploit the solution to converge it to improved results. Thus, the modified velocity equation follows a better convergence by providing a balance between exploring the searching area and exploiting those searched areas. It is applied on ELD problem to obtain optimum solution within feasible functional limits, satisfying the load demand at the same time. In order to determine the optimization performance of the proposed modified PSO based approach, it is applied on two standard test problems. The optimization strategy proposed in this work is easy to implement and provide an improved exploration and exploitation strategy.