Ricerc@Sapienza

The paper proposes a computational procedure able to control in real-time the harmonic disturbance injected by nonlinear loads in an islanded MV/LV Smart Grid, characterized by low short circuit power. Aim of the proposed procedure is to keep automatically under acceptable values the penetration of harmonic disturbances caused by different loads, by means of a control algorithm suitable to a Smart Grid context.

The paper proposes a methodological approach to manage the electric vehicles recharging in an isolated power system characterized by low short circuit power. Focusing on harmonic disturbances, current harmonics injected in the network depend on the specific EV power converter. The model carried out allows for the evaluation of harmonic disturbances under variable conditions for non-linear loads and their harmonic spectra. The methodology allows estimating both current and voltage total harmonic distortion (THDV, THDI) at the point of common coupling (PCC).