IEC Committee Draft (CD) 61850-7-420 Ed. 2.0 just published

IEC TC 57 has just published the 57/1655/CD:

IEC CD 61850-7-420 Ed. 2.0: Communication networks and systems for power utility automation -
Part 7-420: Basic communication structure - Distributed energy resources logical nodes

Commenting closes 2016-04-08.

Attention is drawn to document 57/1658/DC which is circulated in parallel and which reflects a draft IEC TR 61850-7-520 and which contains the main guidelines on how to use the data models contained in the present CD.
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Since both documents are closely linked IEC national committees are invited to develop their comments in parallel on the present CD and on 57/1658/DC.

The major technical changes with regard to the previous edition are as follows:

• Corrections and clarifications according to information letter "IEC 61850-technical issues by the IEC TC 57” (see document 57/963/INF, 2008-07-18);
• Extensions regarding IEC 61850-90-7 (object models for converters in distributed energy resources (DER) systems);
• Some logical nodes in IEC 61850-7-420:2009 that were not specific to distributed energy resources have been transferred to IEC 61850-7-4 Ed. 2.1 and have been removed from this edition of IEC 61850-7-420 (see also Annex A);
• The definitions of logical nodes in this edition of IEC 61850-7-420 have been updated using the table format introduced in IEC 61850-7-4 Ed. 2.1;
• Most of the modelling examples and background information that was included in IEC 61850-7-420:2009 has been transferred to IEC 61850-7-520

This CD is not available publicly as a CDV. The CDV may be available later this year. 

Stay tuned to this blog.