Comparison Between The Optimal Application of Variable Structure Controller (VSC) and Power System Stabilizer (PSS) Using Particle Swarm Optimization (PSO) in Improving System Stability

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Muthanna Journal of Engineering and Technology

Volume 5 issue 1, 2017

Hashim Dhahir Mohammed AL-Thabhawe

AL-Furat AL-Alwsat Technical University, Kufa Technical Institute .



This paper is studying the improvement of the power system stability by optimal   design of variable structure controller (VSC) and power system  stabilizer (PSS) based on Particle Swarm Optimization (PSO) . Switching vector and the switching  feedback gains optimal values of variable structure controller and optimal parameters of power system  stabilizer  are finding by using Particle Swarm Optimization (PSO). The variable structure controller and power system stabilizer parameters are tuned optimally to minimize the objective function of the problem . By Using each of optimal (VSC) and optimal (PSS)  with the developed model of a single machine infinite bus power system and after comparison the simulation results of two controllers, The results of using  the optimal VSC design shows it provides a simple method for arriving to the settings of the VSC and optimal VSC improved the power system stability best than PSS .



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