Influence of inverter-based distributed generator interface control on the performance of power distribution systems

This paper presents a comparative analysis about the influences of three inverter-based distributed generators control modes on several important aspects of distribution networks. The control modes investigated are constant current, constant reactive and active power, and constant voltage and active power. The investigated aspects are steady-state voltage profile, network losses, short-circuit currents and voltage sags. The results are very useful to guide utility engineers to define operating requirements for this type of distributed generator, aiming at minimizing possible negative impacts to the distribution grid.