Electric Vehicles and Plug-in EV Integration

Identifying opportunities and implications for EV grid technology

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Paul Gardner Paul Gardner
Segment Leader, Energy Storage
Technology selection, voltage level, AC or DC

Hybrid and EV cars will be 3.5% of sales by 2015. Battery power and energy density may be two-to-four or more times present levels for increased ranges and heavier vehicles. This means the need for decreasing longer charging times, rapid special-purpose chargers, and battery pack exchange stations.

EV's will have a significant impact on the local energy grid. Both with respect to Power and Energy flows. Magnitude and directions will alter as until recent unseen and unheard of. To enable an optimal integration of large numbers of both EV's and Distributed Generation, one needs to control the Energy and Power on the grid.

One of the alternatives may be addressed as the "mobile smart grid". Most EV's are stationary for long periods during the day. Connecting them to the grid during those periods would enable the use of the battery packs. The battery packs of the EV's are utilised by the DNO to stabilise the local grid by controlling the time and magnitude of the charge, or discharge power

DNV GL is actively engaged in analyzing the opportunities and implications of the emerging EV integration concepts. We work together with all stakeholders where we bring together elements like advanced metering infrastructure, smart grids, energy storage, power electronics, transmission & distribution, and protection and control.