Analysis of the impact of electric vehicles on an urban residential network in its dual mode of operation load-storage

Abstract

For the purpose of reduce the pollution in the transport system, the electric vehicles emerge as replacement of the conventional means of locomotion. This paper presents an analysis of the level of electric vehicles   insertion in a 13,2 kV network, through the evaluation of different charger technologies (slow and semi-fast charging), different user consumption habits and a dual mode operation of the electric vehicles. Charge-discharge profiles were evaluated for the purpose of “flatten” the feeder demand curve. Successive daily load flows were made, gradually increasing the number of electric vehicles.

The results show that the network studied, supports a 100% insertion of electric vehicles for both load systems analysed. The limitations of the network are presented by overload in the first trunk tranche of the distributor. The semi-fast charging system generates greater impact in terms of power demanded in the network.