FUZZIFIED PSO FOR MULTIOBJECTIVE ECONOMIC LOAD DISPATCH PROBLEM

N.Ramyasri, G. Srinivasulu Reddy

Abstract: Power system engineers are always striving hard to run the system with effective utilization of real and reactive powers generated by the generating plants. Reactive power is used to provide better voltage profile as well as to reduce system losses. Membership functions are written for fuel cost, losses, stability index and emission release. As minimization of real power loss over the transmission lines, an attempt is made in this paper to optimize each objective individually using Fuzzy logic approach. In this paper basic assumption is Decision Maker (DM) has imprecise or fuzzy goals of satisfying each of the objectives, the multi objective problem is thus formulated as a fuzzy satisfaction maximization problem which is basically a min-max problem. The multi objective problem is handled using the fuzzy decision satisfaction maximization technique which is an efficient technique to obtain trade off solution in multi objective problems. The developed algorithm for Optimization of each objective is tested on IEEE 30 bus system. Simulation results of IEEE 30 bus network are presented to show the effectiveness of the proposed method.

Keywords: Real power, Reactive power, losses, membership functions, fuzzy logic and trade off solution

DOI: https://doi.org/10.15623/ijret.2013.0208026