Optimal Allocati on of Distributed Generation in Distribution System for Loss Reduction

Abstract

I ntegration of renewable energy based distributed generation (DG) units provides potential benefits to conventional distribution systems. The power injections from renewable DG units located close to the load centers provide an opportunity for system voltage support, reduction in energy losses and emissions, and reliability improvement. Therefore, the allocation of DG units should be carefully determined with the consideration of different planning incentives. This paper presents a simple method for real power loss reduction, voltage profile improvement, substation capacity release and is based on voltage sensitivity index analysis. Power flow analysis is done using the forward-backward sweep method. Study carried out on an IEEE-33 bus test system validates the suitability of this proposed method. Keyw ords: rad ial distribution system, distributed generation, renewable energy sources, voltage sensitivity index, real power loss.