The grid of the future will require treating data differently; leveraging metadata and performing analysis locally to process the mountain of new data available from new technologies. Traditional headend systems, illustrated on the left below, have relied on relatively few sources of field information. New asset classes on the grid (AMI, smart inverters, PMUs, etc.) have added large amounts of data that can quickly and accurately describe the state of the power system. Traditional headend systems were not designed to process this increased volume of information as quickly as is needed to react to current operational scenarios and fully realize the benefits of these new grid edge assets.
Information no longer needs to go to the central system to enable decision making. Federated local data can be made securely available between assets at the grid edge to complement and enhance operations. OpenFMB nodes, shown as blue hexagons on the right of the figure below, host applications that analyze information to develop a higher resolution of situational awareness, and provide the ability to affect local control in coordination with other operational decision making.
Figure 1: Traditional system (left) and OpenFMB system (right)
OpenFMB provides the ability to leverage new along with existing grid assets to ensure that the future power system is more resilient, reliable, safe, secure, and cost effective than traditional approaches. The OpenFMB reference architecture offers best practices and a variety of solution options that a utility service provider can draw upon in defining its specific OpenFMB implementation. Together, the business oriented framework approach and reference architecture support a utility service provider’s procurement process.
The OpenFMB framework consists of a top-down approach moving from business case to use case, data modeling (UML and XSD/IDL), and then implementation approaches (apps/adapters, test/field and maintenance). The reference architecture includes operational, management services, and security best practices.
Figure 2: Framework Lifecycle
OpenFMB nodes are the deployment unit, and range in form from virtual software environments to a variety of physical hardware based options. The following diagram illustrates representative operational interactions between OpenFMB nodes, shown in yellow. Applications providing services, native controllers for their related field equipment, adapters to existing field controllers and their related equipment, and adapters to other systems such as central systems are shown in blue. In green are field equipment related to their native controllers as well as existing systems such as existing field controllers and their related equipment and other existing systems such as central systems.
Shown in red are Industrial Internet of Things (IIoT) publish-subscribe middleware instances that provides authorized communications within a node without messages leaving the node as well as authorized communications between nodes. These communications utilize data profiles based on existing standards, such as IEC’s Common Information Model (CIM), for the semantic data model as developed through the framework approach. In this way, OpenFMB deployments can be scaled independently to meet specific needs without a system-wide rollout. For resiliency, peer-to-peer publish-subscribe protocols are commonly used.
Figure 3: OpenFMB Node Architecture
In March 2015, the Smart Grid Interoperability Panel (SGIP) formally kicked-off its OpenFMB effort to foster field interoperability drawing upon Duke Energy’s previous Coalition of the Willing I and Distributed Intelligence Platform work. By the 2015 SGIP Annual Conference in November, three microgrid use cases had been developed and demonstrated: optimization, unscheduled islanding, and grid reconnection.
In February 2016, the first OpenFMB reference implementation, utilizing SGIP’s microgrid use cases at Duke Energy’s Mount Holly microgrid test center, was demonstrated at the 2016 DistribuTECH Conference by Duke Energy’s Coalition of the Willing II (COW-II) vendor partners. To advance interoperability among established and new technologies, the demonstration highlighted multiple technology options from 25 vendors with at least two independently developed implementations of each function.
For the annual SGIP Grid Modernization Summit in November 2016 the SGIP OpenFMB task force published a series of related foundational use cases that center on Distributed Energy Resources (DER) Circuit Segment Management for the active coordination of power systems equipment to DER, including a microgrid.
Figure 4: Example DER Circuit Segment Management Reference Implementation at Duke Energy
The DER Circuit Segment Management and other OpenFMB use cases listed below are planned to be implemented as pilot projects by several utilities.
The North American Energy Standards Board (NAESB) established a Retail Markets Quadrant Task Force, RMQ.26, to develop the OpenFMB framework and reference architecture document in parallel with SGIP’s OpenFMB effort. SGIP appointed a liaison to the task force so that the framework and reference architecture reflects the experiences and lessons from the initial business case, use case, data modeling, implementation, and SGIP Annual Conference interoperability demonstration activities.
OpenFMB was ratified by the North American Energy Standards Board on March 7, 2016. The official release is NAESB RMQ.26 Open Field Message Bus (OpenFMB) Model Business Practices. It is part of the version 3.1 bundle of all their standards released at the end of March.
Utilities and other members of NAESB have access to NAESB RMQ.26 OpenFMB. The lower center of www.naesb.org has a link "NAESB Copyright Policy & Access & Use of NAESB Standards” which goes to a page with a link in the middle center “NAESB Copyright Policy and Companies with Access to NAESB Standards Under the Copyright Policy” that lists entities with access to RMQ.26 OpenFMB. Ask your entity’s NAESB representative for access to RMQ.26 OpenFMB.
Overview of 25 vendor Duke Energy Coalition of the Willing Phase II microgrid
OpenFMB participants and activities by SGIP VP of Operations
OpenFMB lead-up to SGIP 2016 Grid Modernization Summit
These guidelines describe the proper use of the OpenFMB™ trademark, which is owned by SGIP 2.0, Inc. (“SGIP”). SGIP is currently developing certification standards and procedures for OpenFMB™. This document describes the correct usage of the OpenFMBTM trademark. Please see “Guidelines for use of OpenFMB™ Trademark” for information.
Primary scenario and five extension scenarios for managing DER including islanding microgrids on a circuit segment
Optimization and circuit segment coordination
Seamless microgrid islanding
Seamless microgrid reconnection
Optimization of Microgrid Resource Dispatching
Management of unscheduled microgrid transition
Management of reconnecting a microgird to grid
The Smart Grid Interoperability Panel (SGIP) hosts general OpenFMB meetings and specialized task force meetings for topics such as use cases and cybersecurity. These meetings are where SGIP members including utilities, vendors, academic institutions, government agencies, and others come together to advance OpenFMB. These efforts have produced OpenFMB use cases, demonstrations, and other materials. Learn more about how to participate and join the SGIP.
In addition, the OpenFMB software web page and GitHub site provide a simulation and sample code especially for utilities and others to quickly start with OpenFMB. Read the wikis, clone or fork a repository, and get started.
July 25 – 28, 2017
OpenFMB presentation and working session
January 31 – February 2, 2017
OpenFMB technical presentations
November 7 – 10, 2016
OpenFMB Expo, presentation, and working session
February 9 – 11, 2016
OpenFMB booths, live demonstration, and technical presentations
November 3 – 5, 2015
OpenFMB Expo, presentations, and working session
OpenFMB code repositories hosted on GitHub — a code repository, workflow and hosting site allowing developers to pull code and provide updates with approval. These repositories are intended to provide Utilities and Vendors with reproducible OpenFMB demonstrations using AMQP, DDS, and MQTT. The forward path will include core projects that can be used as a developers kit for OpenFMB.
Review the current use cases and data models. Learn about device simulators for customer loads, solar, ESS and others. Learn about the device adapters such as DNP3, Modbus, and others.
Microgrid Demo of OpenFMB presented at DistribuTECH 2016. It has instructions for setting up the demo, leveraging several of the repositories that show the basic concepts of OpenFMB.