IEC TC57 Industry Updates

IEC TC57 WG17 Update – Issue 052 June 2020

IEC TC 57 WG 17 is in charge of power system intelligent electronic device communication and associated data models for microgrids, distributed energy resources and distribution automation.

IEC 61850 for DER

Expanded Activities to Support DER Integration into the Smart energy Domain

IEC TC57 WG 17 is in charge of IED communication and associated data models for microgrids, distributed energy resources (DER), and distribution automation. Earlier this year, the WG 17 finalized the draft for comments (CDV) of the new edition of IEC 61850-7-420 which covers three fundamental data models for DERs:

1) Generic resource class and composition models of single or combinations of DER producer, consumer or storage equipment including mixed aggregations

2) Specific model supplements to reflect DER technology specific aspects such as PV systems, gensets, combined heat and power, etc., and

3) Operational function models for meeting the IEEE 1547 requirements, as well as the EN 50549 European requirements

WG 17 is benefiting from having this document out for commenting and is now starting up some key associated activities. The focus of the first activity is to provide a guidance document, IEC 61850-7-520, on how to best use this new IEC 61850-7-420 edition.

This guidebook is planned to be available at the same time as the final publication of IEC 61850-7-420. It consists in selecting very concrete use cases involving some of the key functions and indicating which sets of LNs, how these LNs might be arranged, and what data objects are recommended to fulfil them.

Among these examples, WG 17 selected use cases covering compliance to the principal IEEE 1547 and EN 50549 grid codes requirements.

The other work just kicked-off is the IEC TR 61850-90-23 addressing microgrid management, especially focused on providing standardized data model interfaces to support the planned and emergency islanding as well as reconnection of microgrids.

This work leverages the standardization work on-going in IEC TC8, and is aimed at describing in detail the six main use cases which drive the setting-up of microgrids. Based on these use cases, WG 17 will determine the “data” transposition of these microgrid requirements to the IEC 61850-7-420 modelling approach. This will permit WG 17 to identify any missing functions and any missing exchanged information models.

Another technical standardization work (IEC TR61850-90-27) addresses interactions between thermal and electrical energy resources. This report applies the modeling approach defined in the latest IEC 61850-7-420 for “electrical” DERs to develop standard data model related to thermal energy resources, as well as for functions transforming electricity to thermal and vice-versa.

A last point which is also of importance is the integration of electrical vehicles (EVs) as DERs. WG 17 produced in 2016 a first TR, IEC 61850-90-8, to address the management of EVs when connected to the grid, mostly looking at its DER facet. However, recognizing that many EV stakeholders’ requirements, such as market aspects for vehicle users and charging stations, were not sufficiently represented through this first work, the decision was to migrate it to a joint working group (JWG11) between WG 17 and TC 69 for consideration as part of the development of the IEC 63110 standard.

Unfortunately, this migration caused the “EV as DER” aspects to be “lost.” As a result, both bodies jointly came to the conclusion that WG 17 should produce a document summarizing the grid-related requirements to consider in the context of EV connection to the grid.

Given how critical DER has become over the last few years, these activities will greatly enhance the IEC 61850-7-420 data model and its usability by the smart energy industry.


Laurent Guise graduated from the Ecole Supérieure d’Electricité (ESE SUPELEC Engineering school) and has been working for Schneider Electric in electrical network protection, monitoring and control systems for more than 20 years. Within Schneider-Electric, Laurent has been awarded the distinction of a Master Expert in Smart Grids and IEC 61850. He is leading, at the corporate level, the definition, coordination, and implementation of the smart grid standardization policy. Laurent is the convener of IEC TC 57 WG 17 in charge of feeder automation based on the leading IEC 61850 standard. He also leads the group in charge of the IEC roadmap within the IEC Smart Energy System Committee. At the European level, he chairs the CEN-CENELEC-ETSI Smart Grid Coordination Group in charge of ensuring the availability of the appropriate set of standards to support smart grid deployment in Europe.