Multiple Distributed Generation Allocation in Radial Distribution Networks by Considering Loss Reduction and Curtailment

Abstract

Multiple distributed generation (DG) causes high influx of power injected into an electrical system. As a result, economic losses are increased in the system. To optimize economic losses, the DG allocation needs to consider impacts of multiple DG power losses and curtailment in the system. In this paper, the novel multiple DG allocation method is proposed by considering loss reduction and curtailment. This method applies multi-objective optimization by using the weighted sum method. The power flow sensitivity analysis is utilized to construct power loss function for an optimization. The proposed method was tested on IEEE-33 bus systems with residential and commercial load profiles. Results showed that the proposed method can reduce power losses and DG curtailment for residential and commercial load profiles. The effect on sizing DG was also discussed in this paper.