Proposal of Connection Assessment Diagrams to Speed up the Studies of Hosting Capacity of PV Generators in MV Distribution Systems

In 2021, an average of 5.5 generators were connected every day in Brazilian MV distribution systems, and 98.9% of these generators are photovoltaic. The increased penetration of MV distributed generation has been accompanied by a rise in the workload of utility planning engineers, who must study and propose solutions to enable the connection of every MV generator. In this context, this work proposes a quick first-assessment approach to identify if the required connection can be approved or if further studies are required. The proposed approach focuses on the most restrictive steady-state technical impacts (overvoltage and overload) related to the increased penetration of MV distributed generators. The proposed approach consists of building connection assessment diagrams that can successfully speed up the required analyses and, consequently, decrease person-hour costs.