Effect of Distributed Photovoltaic Generation on Short-Circuit Currents and Fault Detection in Distribution Networks: A Practical Case Study

The increase in the installation of renewable energy sources electrical systems has changed power distribution networks, and a new scenario regarding protection devices arisen. Distributed generation (DG) might produce artificial delays performance when acting as result short-circuits. In this study, preliminary research results carried out to analyze effect (photovoltaic, wind generation, etc.) on grid are described. order study problem well-defined scenario, quite simple network (similar ones present rural areas) was selected. divided into three zones so that each them had DG. Institute Electrical Electronic Engineers (IEEE) system 13 bus test feeder, short-circuits with different levels penetration were performed from 1 MVA 3 (that represent 25%, 50%, 75% total load network). simulations out, it observed DG produced significant changes short-circuit currents, inadequate delay their operating times (with differences up 180% relation case without DG). latter, is, impacts photovoltaic reactions radial network, is most relevant outcome work. These first obtained collaboration framework established by staff ETSI Civil IDR/UPM Institute, (as DG) network.