Combined Economic Emission Dispatch Problem using Particle Swarm Optimization

Abstract

This paper deals with particle swarm optimization (PSO) method to solve Combined Economic emission Dispatch Problem (CEEDP)of thermal units while satisfying the constraints such as generator capacity limits, power balance and line flow limits.PSO is a stochastic optimization process based on the movement and intelligence of swarms.The objective is to minimize the total fuel cost of generation and environmental pollution caused by fossil based thermal generating units.The bi-objective problem is converted into single objective problem by introducing price penalty factor to maintain an acceptable system performance in terms of limits on generator real power outputs, transmission losses with minimum emission dispatch.The proposed approach has been evaluated on an IEEE 30-bus test system with six generators.The results obtained with the proposed approach are compared with results of genetic algorithm and other technique.