Estudo Probabilístico da Capacidade de Hospedagem Combinada de Microgeradores Fotovoltaicos e Veículos Elétricos sob Controle Volt-VAr Local em Redes de Distribuição de Baixa Tensão

Abstract

This paper presents a methodology for probabilistic assessment of the combined hosting capacity (HC) of photovoltaic (PV) microgenerators and electric vehicles (EV) in low- voltage (LV) distribution networks considering local Volt-VAr control of both PV inverters and EV charging. The proposed methodology is based on the Monte Carlo method considering uncertainties associated with PV generation and EV charging. The used stochastic variables are PV location, EV user behavior, residential load profile, PV rated capacity, and regulatory aspects. Tests and simulations have been performed in a real LV distribution network using Python and OpenDSS via DLL interface. The simulation results have been statistically analyzed by boxplots. The following operational variables have been monitored simultaneously: voltage magnitude, voltage unbalance, transformer loading. In addition, a complementary study on the real losses in the LV network is presented. Finally, the simulation results show that the local Volt- VAr control is effective to increase the combined HC of PV and EV charging in LV distribution networks.