Impact of Electric Vehicle Charging and Photovoltaic Generation on Distribution System Voltage Volatility

This paper deals with the quantitative assessment of the impact of small solar photovoltaic (PV) units and electric vehicles (EVs) on the voltage volatility in active distribution networks. In particular, the combined effect of the charging behavior of EVs, the load profiles of the consumers as well as the generation of PV power plants is analyzed using stochastic models to cope with the attendant uncertainty. Monte Carlo simulations on a representative test network were carried out for several scenarios to assess and quantify the overall impact on the voltage volatility and to identify future demand for grid extensions and improved control strategies.