Architecting the Smart Grid Using the Industrial Internet of Things
Figure 3: OpenFMB 2015 Work Plan
The OpenFMB Framework Priority Action Plan (PAP) was officially kicked off March 5, 2015. The
SGIP volunteer organization agreed to the following work plan for 2015:
1. Develop microgrid use cases: The OpenFMB PAP team developed three microgrid use
cases:
1) Unscheduled Islanding: This use case begins with an unexpected event, such as a
cyber or physical threat, or grid instability, requiring the microgrid to disconnect
rapidly from the grid in an unscheduled way.
2) Islanded Optimization: This use case optimizes the usage of Distributed Energy
Resources (DERs) while in islanded mode (disconnected from the grid). The
microgrid controller is responsible for balancing supply and load using the
available DERs (solar, wind and battery).
3) Grid Reconnect: This use case performs the communications, checks and
balances, and operational management processes required to reconnect the
microgrid to the grid. This is a structured event initiated by first clearing the issue
that caused the microgrid to island itself, then communicating with the central
power company managing the grid to coordinate and synchronize bringing the
microgrid back online.
2. Develop a UML information profile based on an existing Smart Grid information model
standard: The OpenFMB PAP team is not interested in “reinventing the wheel” and
agreed that one founding principle would be to leverage existing information models
and message protocols wherever possible. Several information model choices were
appropriate to support the use cases described above. The team chose IEC 61968/61970
(also called the Common Information Model or CIM) as the starting point. The CIM UML
was “pruned” to create a minimum message payload profile and missing data elements
were added to “extend” the profile to give full support to the three use cases.
IIC Journal of Innovation
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