Analysis of voltage and short-circuit current on photovoltaic generation dominated distribution systems

This paper proposes an integrated impact analysis of photovoltaic generation in the voltage profile and the short-circuit level in secondary distribution networks. The analysis is to verify the level of voltage in consumer units and the behavior of short-circuit currents considering the performances of the voltage protection of PV inverters during short-circuits. The study showed that due to the inserted PV level in the system, local of short-circuit and the short-circuit type the voltage and current during short-circuits have variations due to the performance of the protection of PV inverters. The analysis was performed on an 18-busbar test system modeled on DigSILENT® Power Factory software.