JIC_V4_N4_RP2 Ch. Durga Prasad G. Pavan Kumar Journal on Instrumentation & Control Engineering 2321–1148 4 4 16 22 Hybrid Power System, I-controller, PI-controller, PID-controller, PSO Algorithm, Wind Energy In this paper, an Inter Connected Hybrid Power System with Wind Energy in presence of Classical Controllers Tuned by Particle Swarm Optimization is studied. Integration of renewable resources into existing plants will affect the system frequency and hence design of a suitable controller is needed to maintain frequency within limits. In this paper, PSO technique is used to design conventional controllers such as I-controller, and PI- controller. For classical thermal and diesel units, the PSO method will tune the controller parameters in the secondary loop, whereas in case of wind turbine model; the pitch angle is controlled by the same Particle Swarm Optimization algorithm. Results are carried out in Matlab/Simulink software. August - October 2016 Copyright © 2016 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=8229