Global connections

Impacts from electric mobility in V2G and V4G modes in the distribution network planning and operation

Part of the effort in decarbonizing economy and society relies on mobility, involving the electrification of the transportation sector and leading to the so-called electric mobility phenomenon. The increase in electric mobility requires a considerable effort in the operation of electrical distribution networks to allow charging batteries of the electric vehicles (EV). As matter of fact, electric vehicles became a new electricity consumer presenting a special characteristic – flexibility. This new consumer can charge the batteries slowly, in periods ranging typically from four to six hours, or, in a fast manner, in periods between 15 and 30 minutes involving powers from the 50 kW to 350 kW for the case of the fast and ultra-fast chargers, respectively. The presence of this new type of consumer in the electrical grid is changing the patterns of load consumption, causing in some situations overloads in branches (like for dumb charging), excessive voltage drops and, in some cases, compromises power quality. In face of these concerns, the power systems community has timely identified and developed several solutions for charging the EV batteries taking profit of the flexibility of this new load type. The most common approach is the controlled charging of the EV batteries – the smart charging – involving the management of the chargers of the batteries in charging places of parking lots, garages of buildings and even in individual electrical installations, like households, managing the charging of the batteries together with the remaining loads of the electrical installations.

To read this article subscribe to ELECTRA. A range of options are available, including free access for a limited time. Access to all editions is free for CIGRE members.

Already have an account? Sign in

Subscribe now

Global Connections

Global Connections Section includes invited articles and interviews along with CIGRE articles to broaden global power system expertise. Invited authors and interviews approved by the Electra Editorial Board may express opinions solely their own.

Top of page