Optimal Source Placement in a DC Microgrid Considering Line Losses and Cables Weight

This research paper presents a methodology for optimizing the placement of an electric single source in a DC islanded microgrid mesh network with the aim of minimizing line losses while considering minimal cables weight. The paper utilizes the Dijkstra algorithm (a graph algorithm used in Google Maps) to identify the shortest path between a potential source node and all other variable loads in a predefined electric distribution mesh network topology. The resulting optimal placement of sources is ordered based on their corresponding line losses and optimal cables weight. Connected nodes in the mesh network are predefined, but lines optimal resistances are computed by the algorithm. The study only considers active power and provides insights into optimizing the placement of sources in DC microgrid mesh networks. The main contribution of this paper is to rank source node positions from least to highest line losses. The paper also provides a comparison of the mesh networks based on the optimal cables weight used when placing a source at a defined position. The proposed methodology can be useful for system designers and operators seeking to minimize line losses and optimize energy distribution in DC microgrids using a mesh network topology.