At DistribuTECH 2015, Duke Energy held a session about their Phase 2 project (COW II) of the Coalition of the Willing initiative.
Stuart Laval, Smart Grid Technology Manager at Duke, presented an overview of the COW II project. At most utilities the current architecture is a collection of proprietary application silos with no field interoperability. What interoperability there is is via the enterprise service bus in the central control office. Duke is proposing a distributed intelligence platform (DIP) with seamless interoperability in the field. Duke's plan is to implement a Common Information Model (CIM) into an OpenFMB field message bus which is based on mature standards - OMG Data Distribution Service and Message Queue Telemetry Transport (MQTT) which is now an OASIS Standard. CIM provides semantics in the form of standardized object model representations.
The use case is a islandable microgrid. The microgrid will include solar and battery storage and will use wireless to support field communication between all the devices on the distribution grid.
Some of the objectives of the COW II project are
- Demonstrate operation of an islandable microgrid utilizing solar PV and battery storage.
- Demonstrate a functioning distributed intelligence architecture.
- Demonstrate interoperability based on CIM between open publish/subscribe standard protocols including DDS and MQTT.
- Develop and demonstrate "edge of the grid" applications such as volt/var and solar smoothing.
- Demonstrate live interoperability at DistribuTECH 2016.
Duke has lined up 25 vendor partners to support the COW II effort. For most types of equipment, there are two vendor partners that can provide the equipment. For example, Elster and Itron manufacture smart meters.
A key part of the demonstration is a field message bus based on open standards. Duke is working with a number of partners to support this effort.
- Smart Grid Interoperability Panel (SGIP)
- North American Energy Standards Board (NAESB)
- National Renewable Energy Lab (NREL) DOE INTEGRATE project
- EPRI Integrated Grid program
- CPS Energy "Grid of the Future" deployment in San Antonio
The Smart Grid Interoperability Panel (SGIP) has already created an OpenFMB working group to support this effort.