Evaluating the Effects of Micro-Grid Formation on Hosting Capacity of Resilient Electrical Distribution Networks

Due to increasing the occurrence of High Impact Low Probability (HILP) events and their effects on public works especially electrical distribution networks (EDNs), the concept of resiliency has been appeared. An EDN can be called a resilient network which is profited by some techniques such as micro-grid (MG) formation, hardening of infrastructures, reconfiguration, etc. On the other hand, some researchers have studied the methods of improving the Hosting Capacity (HC) of EDNs by applying more Renewable Distributed Energy Resources (RDERs). A few studies have considered the impacts of line hardening on HC. However, none of the literature has studied the impacts of MG formation on HC which this article tries to cover. In this paper, the effects of MG numbers are evaluated on improving HC in hosting RDERs. In order to achieve this, the predefined number of RDERs including wind turbines, photovoltaic units, and energy storage systems that are hosted by EDNs is considered in several numbers of MGs as case studies. The simulation is implemented on the GAMS environment applying IEEE-69 bus test system. The results are compared and the results are provided in the form of Pareto optimal solutions using fuzzy satisfying approach. All the formulated equations are convex and the GUROBI solver is applied.