Optimal Sizing and Location of Distributed Generators in Distribution System for Loss Reduction

The optimal planning process of distributed generation (DG) involves its sizing and placement and has large potential for power loss decrease and voltage profile enhancement. Therefore, this present paper, an analysis on IEEE 14 bus system has been carried out to determine the effect of DG unit sizing and their location on the power loss in distribution system. The proposed model utilizes backward-forward sweep (BFS) method for load flow analysis and PSO for finest DG sizing and placement. In proposed work, two different cases viz. single DG and multiple DG have been analyses and compared with the no DG based case. The result of case analysis reveals that the placement of multiple DG at PSO-derived sites in distribution system can reduce the total power loss by 75.78% and improve the voltage profile by 18.56% in comparison of base case.