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Electric Vehicles impact on the planning of the Milan distribution network

pubblicazioni - Articolo

Electric Vehicles impact on the planning of the Milan distribution network

The study addresses the impact on planning of Low Voltage (LV) distribution grids within the urban area of a major Italian municipality due to the introduction of the Electric Mobility. It takes into account that, in this area, the diffusion of Electric Vehicles (EV), will be greater than in the rest of Italy. Two scenarios are analyzed. In the 2020 scenario, the expected penetration of cars in LV distribution grids, will require substitution of a small amount of MV/LV transformers, while in the 2030 scenario, the amount of EV recharging on LV networks will double, since all additional EV will use fast charging stations connected to MV lines. In the worst case, less than 3% of MV/LV transformers will need to be considered for substitution. Hosting capacity of lateral feeders, feeders and main feeders of each LV grid are also evaluated. For this purpose data collected by the smart metering systems become very helpful. The hosting capacity is calculated as the difference of the rating of each cable and load curves obtained integrating load curves recorded by customers’ smart meters.

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