Constriction Coefficient Particle Swarm Optimization for Economic Load Dispatch with valve point loading effects

This paper presents an efficient method to Economic Load Dispatch (ELD) problem using a Particle Swarm Optimization (PSO) technique. The practical ELD problems have nonsmooth cost functions with equality and inequality constraints. It is difficult to find the optimum solution using mathematical approaches. In this paper Constriction Coefficient PSO(CPSO) is used to solve ELD problem with valve point loading effects. The results of this method are compared with Standard PSO (SPSO) and inertia based PSO (IPSO) method. The results of the proposed method are illustrated with 3 and 6 generator unit systems.