Table of Contents
Advances in Electrical Engineering
Volume 2015, Article ID 536040, 6 pages
Research Article

Multiobjective Economic Load Dispatch Problem Solved by New PSO

1Department of Electrical Engineering, Mewar University, Chittorgarh, Rajasthan, India
2Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal, India

Received 30 September 2014; Accepted 2 February 2015

Academic Editor: Nikos D. Lagaros

Copyright © 2015 Nagendra Singh and Yogendra Kumar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Proposed in this paper is a new particle swarm optimization technique for the solution of economic load dispatch as well as environmental emission of the thermal power plant with power balance and generation limit constraints. Economic load dispatch is an online problem to minimize the total generating cost of the thermal power plant and satisfy the equality and inequality constraints. Thermal power plants use fossil fuels for the generation of power; fossil fuel emits many toxic gases which pollute the environment. This paper not only considers the economic load dispatch problem to reduce the total generation cost of the thermal power plant but also deals with environmental emission minimization. In this paper, fuel cost and the environmental emission functions are considered and formulated as a multiobjective economic load dispatch problem. For obtaining the solution of multiobjective economic load dispatch problem a new PSO called moderate random search PSO was used. MRPSO enhances the ability of particles to explore in the search spaces more effectively and increases their convergence rates. The proposed algorithm is tested for the IEEE 30 bus test systems. The results obtained by MRPSO algorithm show that it is effective and efficient.