Title: PSS parameters values finding using SMVSDFT objective function and a new technique for multi-objective function in a multi-machine power system

Authors: Zahra Rafiee; Abbas Fattahi Meyabadi; Hamidreza Heydari

Addresses: Islamic Azad University Eslamshahr Branch, Shahid Sayyad-e-Shrazi Street, Namaz Square, P.O. Box 3314767653, Eslamshahr City, Tehran, Iran ' Hamadan University of Technology, Shahid Fahmideh Avenue, Mardom Street, P.O. Box 65155579, Hamadan City, Hamadan 6516913733, Iran ' Technical College of Shahid Jabarian, Technical and Vocational University, P.O. Box 6516613165, Hamadan City, Iran

Abstract: In power systems, the application of power system stabiliser (PSS) has been proved to lead to the stability of power systems. It is necessary to determine PSS parameters, exactly. In this study, a new objective function is presented to study stability of the power system. This function applies for the obtaining of PSSs parameters also, when there are several PSSs simultaneously in a multi-machine power system with two areas. Stability of a multi-area power system is a multi-objective problem, so in this study, the use of a new multi-objective function has been presented. The power plant system that is simulated in this study is the model of Kundur's two-area power system. PSSs parameters are optimised particle swarm optimisation and genetic algorithms and by using a new multi-objective function algorithm, simultaneously. The responses are compared with PSS parameters for the Kundur's two area power system. The responses PSO-PSS and GA-PSO are also compared with each other and of the multi-objective function algorithm and of the efficiency new objective function called SMVS-DFT will be proved.

Keywords: power system stabilisers; PSS; genetic algorithms; GAs; particle swarm optimisation; PSO; multi-objective optimisation; fast Fourier transform; FFT; samples magnitude values sum; DFT; SMVS-DFT; discrete Fourier transform; multi-machine power systems; simulation.

DOI: 10.1504/IJPEC.2015.070471

International Journal of Power and Energy Conversion, 2015 Vol.6 No.3, pp.252 - 266

Received: 13 May 2014
Accepted: 22 Sep 2014
Published online: 07 Jul 2015 *

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