Smart Grid Security

217Plug-In Electric Vehicles and Energy Storage

but it must also be able to handle the unexpected. With such a massive

increase in storage, the traditional means of relying on a human being to

perform a sanity check just won’t work. The systems must be designed

to reject data outside a permissible range and possibly bar that device

from participating in any storage-to-grid program until the right ranges

are provided. This helps to ensure that malicious or inadvertent bad data

do not cause any cascading effects. For example, if an electric vehicle

reports that it has ten times more energy available than an electric vehi-

cle is capable of storing, then the utility should preclude that device from

providing power to the grid until that anomaly ...