Analysis of the impact of distributed generation placement on voltage profile in distribution systems

This paper analyzes the impact of distributed generation (DG) placement on voltage profile under certain penetration level in low-voltage (LV) distribution networks. DGs are allocated via different probabilistic approaches to account for uncertainties of DG installation in the future. The main contribution of this paper is in understanding how to apply proper probability distribution functions (PDFs) and constraints for DG placement location to prevent under- and over-voltage problems or unexpected load disconnections. The results prove that the developed approach can reduce the probability of having load voltage violations, which means the network may have more DGs accommodated. Such techniques can be considered as a tool for the network planning engineer to facilitate the installation of DGs in the future.