Just published: the Committee Draft for Vote (CDV) of the 3rd edition of the Standard for Wind turbines - IEC 61400-25-2: Communications for monitoring and control of wind power plants - Information models
IEC 61400-25-2 ED3, 88/1199/CDV for Public Commenting (157 pages)
DATE OF CIRCULATION: 2026-10-16
CLOSING DATE FOR VOTING: 2027-01-08
Excerpt from the Foreword:
"This edition includes the following significant technical changes with respect to the previous edition:
The harmonization of IEC 61400-25-2 with IEC 61850 in term of data modelling and document structure. The IEC 61400-25-2 Edition 3 is auto-generated from the reference UML model, following the process set-up in TC57 and described in IEC TS 61850-1-2. A benefit of this process is that this document is provided with Code Components, including the NSD.
Common data classes (CDC) specific to the wind power domain have been removed and replaced by existing CDCs from the IEC 61850-7-3:2011+AMD1:2020 to follow the rules set in IEC TS 61850-1-2. ..."
I highly appreciate that this 3rd edition compared to the first two editions is really harmonized with the original standard IEC 61850 - which was the base for the IEC 61400-25-2 ... BUT the group decided some 20+ years ago to be (for good reasons) "special" ... unfortunately I (and a few other experts) were not able to convince that the real benefit would be to just use the IEC 61850 as a base and just extend models for wind turbines.
IEC awarded me with the IEC 1906 Award vor my involvement in IEC 61850 AND the adoption for wind turbines:
Congratulation for this step forward to reach a harmonious set of information models published by IEC 61850 AND IEC 61400-25-2 !!!
All other "tools" like SCL configuration language, services, protocols like IEC 61850-8-1 ad IEC 61850-8-3 (Websockets, JSON encoded messages; in preparation) ... can be used also for the wind turbines. The need for an extra comprehensive mapping of the models to OPC UA is ... !?
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