IEEE Power & Energy Magazine - July/August 2017 - 29

The microgrid may be defined as the resources-
generation, storage, and loads-within a boundary
that are managed by the controller.

deployment of microgrids by establishing a common technical
basis for interconnection and interaction with the distribution
utility at the point of interconnection.
The DOE/OE supported preparation and submission of the
project authorization request (PAR) for a microgrid controller standard to the IEEE Standards Association (IEEE SA) in
the fall of 2013. Under sponsorship of the transmission and
distribution committee of the IEEE Power & Energy Society,
the PAR was submitted to the IEEE SA in April 2014 and a
working group was formed. IEEE P2030.7 was approved by
the IEEE SA on 11 June 2014. The draft standard was submitted to the IEEE SA in February 2017 as the first step in the
balloting process.
The PAR for IEEE P2030.8 was approved by IEEE SA on
11 June 2015. The working group, already formed, promptly
scheduled its meetings to coincide with those of the IEEE
P2010.7 working group to better align the development of
requirements. As of this writing, a balloting group has been
formed, and the draft standard is being balloted with results
expected by June 2017.
Both working groups received the support of individuals
engaged with other DOE/OE projects, and FOA 997 awardees were encouraged to participate actively and contribute to
writing groups. The working groups called upon the functional use cases in their initial discussions, forming the basis
for the discussion on functionalities and requirements.

Microgrid Controller for Interactive
Operations with Utilities
Grid Interactive Microgrid Controller
The DOE/OE requested that EPRI study issues related to grid
interactive microgrid controllers in early 2014. This project
was intended to advance the state of the art of microgrid controllers by developing and defining standardized functions
for them. A key focus was on the overall utility system architecture of microgrid controllers with respect to the DMS. As
result, the roles of the microgrid operator (via the functionality of the microgrid controller) and the distribution system
operator (DSO) (via the DMS) were defined, as well as the
interfaces between them.
The report examined the relationship between DERs and
the microgrid controller and the distributed energy management system (DERMS), as well as the relationship between
the microgrid controller/DERMS and the DMS. Architectural variations among DMS, microgrid controllers, DERMS,
july/august 2017

and DERs were explained. Looking at the architecture from
DERs to microgrid controllers/DERMS, the report identified the interface, messages, information exchanged, communications protocols, and functional requirements for each
of the functions that relate DERs to microgrid controllers/
DERMS. An in-depth discussion of the integration of the
microgrid controller/DERMS with the DMS was included.
The remaining technical gaps in the integration of DMS,
DERMS, and microgrid controllers were also identified.
This project advanced the state of the art in microgrids and
aggregated DERs by developing and defining standardized
functions for the microgrid controller. Further, it established
the roles of microgrid management and DERMS functionalities within the microgrid controller and identified the interface
between the microgrid controller and the DSO through interaction with the DMS. The result contributes to a modernized
distribution grid that uses optimal methods to meet both local
(microgrid) and overall grid operations. The relationship between
the microgrid controller and the DMS is shown in Figure 4.

Microgrid Controllers and Distribution
Management Systems
Coincident with the research project with EPRI on grid
interactive microgrid controllers, the DOE/OE requested
that Argonne National Laboratory (ANL) conduct a research
study on advanced DMSs. The purpose was to examine
issues related to the integration of microgrids and DERs with
distribution networks; effectively, this means the microgrid
controller and the DMS. The resulting report includes much
useful information on the interaction of microgrids and distribution utilities.
The relationship between the distribution utility and the
microgrid is important for optimizing DERs within the
microgrid and the power delivery system overall. This takes
place through the interaction between the utility's DMS and
the microgrid controller within the context of an operating
agreement for the interconnection of the microgrid with
the utility.
The EPRI and ANL projects were developed in parallel to give complementary perspectives on the functionality
and interaction of the microgrid controller, both within the
microgrid and across the point of interconnection with the
utility. Simply put, grid to point of interconnection (POI)
and microgrid to POI. These projects were intended to provide the industry with a point of reference and guidance to
research and standards development organizations.
ieee power & energy magazine

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Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - July/August 2017

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IEEE Power & Energy Magazine - July/August 2017 - Cover3
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