This SAE Information Report establishes use cases for communication between plug-in electric vehicles and the electric power grid, for energy transfer and other applications.

Purpose

The purpose of J2836/1™ is to document the set of use cases which must be supported by SAE Recommended Practice J2847/1, Communication Between Plug-in Vehicles and the Utility Grid.

Use Case Methodology

Each use case is described by a ‘package' comprising several components:

• Brief written description of the use case, its actors, and intended purpose.

• Scenario matrix, specifying required and optional use case attributes.

• Equipment diagram, depicting actors and physical components of the use case.

• Communication path diagram, depicting communication transports and components.

• Activity diagram, depicting the interactions among use case actors.

• Sequence diagram, depicting the sequence of message flows in the use case.

Several of these concepts – notably, actors, and the activity and sequence diagrams – derive from EPRI Intelligrid methodology, which in turn is based on Unified Modeling Language (UML)¹

¹ http://en.wikipedia.org/wiki/Unified_Modeling_Language

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