Optimisation and Improvement of Voltage stability in a Standalone Wind-diesel-micro Hydro Hybrid System

This paper suggests the application of PSO based SVC controller for Reactive Power compensation and optimisation of an isolated hybrid system consisting of wind diesel and micro hydro system. The small signal linear model of the hybrid wind Diesel micro hydro model is considered with different loading conditions. The reactive power compensation and stability analysis have been carried out with SVC Controller with an IEEE exciter I. The PSO algorithm is used to optimise the SVC controller and a comparison is made with the GA based controller. The system undergoes through variable wind power inputs and uncertain load change. The stability of the system is verified from the eigen value analysis.