Demand response implementation requires ‘signals’ such as a kilowatthour tariff, which must be sent from some central system to a smart meter or home energy management system and possibly on down to a smart appliance.
While conceptually straightforward, the integrity of this data must be guaranteed end to end, without any translation issues between the multiple interfaces and taking into account the range of potential technologies, e.g. wireless or wired, and the diversity of standards from different organisations.
In order to achieve this, a consortium comprised of the European smart energy association ESMIG, quality assurance company DNV GL and the Dutch research organisation TNO are undertaking an investigation on the alignment of data formats for demand side flexibility.
“We need to establish the standards to use to exchange energy market and energy management information in order to achieve seamless data flows for different applications and types of infrastructure,” says ESMIG Managing Director Willem Strabbing in a presentation.
The project, which is supported by the European Commission’s Network, Content and Technology directorate (DG Connect), is now in the closing stages with wrapping up expected before the end of the year.
The basis for the work is the new SAREF (Smart Appliances REFerence) standard for smart appliances in smart homes.
Examples of widely used data standards from different sectors of the energy system are DLMS/COSEM for metering from the utilities, SPINE for home automation from the smart appliance sector and the industry developed CIM/OpenADR for demand response.
“We are using the SAREF ontology to make the connections and align these data models,” Strabbing explains.
These are then being applied to the demand side flexibility functionalities that have been identified by the European standards organisations CEN, CENELEC and ETSI. The outcomes with recommendations are then being delivered back to these organisations.
“Our approach has been to identify, define and demonstrate,” Strabbing says – the latter referring to a demonstration of this standardisation effort comprising a heat pump, charging station, smart appliances, smart meters and communication technology presented at European Utility Week 2017.
A study on the flexibility potential of smart appliances prepared for ESMIG found that these were highly cost effective, with ubiquitous rollout able to achieve payback in as little as one year.