Use of single-phase inverter-interfaced DGs for power quality improvement in LV networks

The growing diffusion of single-phase distributed generators in LV distribution networks, already stressed by unbalanced loadings, is likely to give rise to further power quality problems, mainly voltage magnitude and unbalance issues. This paper first focuses on some recent normative decisions regarding the reactive power management for LV active users, then investigates the effects of a stronger participation of the latter to the network voltage regulation, enabled by a suitable local control strategy based on these standards. Simulations on a case study LV network are conducted for a 24 h time window, using a Backward-Forward sweep solution method.