In the US, the Smart Grid Interoperability Panel (SGIP) will release a public review paper this week on a new standard that aims to make facilities' energy management systems interoperable.
The SGIP created a working group in response to facilities - defined as a home, commercial office building, factory or campus - wanting to participate in demand response programmes but lacking a common agreement of what the term 'demands' means, writes Allen Jones, an independent consultant specialising in the interaction between facilities and the smart grid.
Mr Jones said the Facility Smart Grid Information Model (FSGIM), which will be made public on 7 August, is not a protocol but can be used by other protocols to aid them in adapting to the smart grid.
The FSGIM supports energy management applications and grid interactions including on-site generation, demand response, electrical storage, peak demand management and end load monitoring.
SGIP asked American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to coordinate the development of the standard.
The model simulates the information that would need to be exchanged within a facility to participate in the smart grid and is based on four basic building blocks:
- the load component used to model devices that consume energy,
- the generator component used to model devices that provide energy
- the meter component – used to model devices that measure energy, power, or pollutant emissions that result from generating power
- the energy manager component used to model devices that make decisions based on power, energy, emissions, costs, weather, etc.
Modular information model
Jones explains that FSGIM is modular so that users can ignore parts that do not apply to their domain. For example, if the user does not do anything with generation or energy storage, they can ignore the generator component.
Jones said in his review of the paper: "Within each logical component, there are one or more class diagrams that explain the component.
"A listing of the classes in each diagram, along with a description of each class, appears immediately after each drawing. Many users will not need a more detailed understanding than what they will learn from these diagrams and class descriptions."
The Publication Public Review is the last major step before the draft standard will become an official ANSI/ASHRAE/NEMA standard.
The smart grid interoperability document can be downloaded from 7 August until 6 October.