Seven IEC 61850 Model Documents Published for Public CDV Comments

Please note that seven IEC 61850-7-xxx model documents have been published for CDV comments on 2026-02-13. The following documents are available for public comments until 2026-04-10:

IEC 61850-7-4 ED3
Communication networks and systems for power utility
automation - Part 7-4: Basic communication structure -
Compatible logical node classes and data object classes -
Core

IEC 61850-7-40 ED1
... Common part

IEC 61850-7-43 ED1
... Primary equipment

IEC 61850-7-44 ED1
... Instrument transformers

IEC 61850-7-400 ED1
.... Substation automation

IEC 61850-7-401 ED1
... Protection

IEC 61850-7-440 ED1
... Power quality metering

Enjoy!

New TC 57 CDVs For Public Comments Posted

IEC TC 57 has posted two new CDVs for public comments (for everybody to read the document for free):

57/2068/CDV
IEC 62351-3/AMD2 ED1: Amendment 2 - Power systems management and associated information exchange - Data and communications security -
Part 3: Communication network and system security - Profiles including TCP/IP 

57/2069/CDV (67 pages)
IEC 62351-8 ED1: Power systems management and associated information exchange - Data and communications security -
Part 8: Role-based access control 

This effort will transform the existing IEC TS 62351-8 ED1 from an IEC TS (Technical Specification) into an IS (International Standard) ED1

Excerpt from the Scope:

"The scope of this standard is to facilitate role-based access control (RBAC) for power system management. RBAC assigns human users, automated systems, and software applications (called “subjects” in this document) to specified “roles”, and restricts their access to only those resources, which the security policies identify as necessary for their roles.

As electric power systems become more automated and cyber security concerns become more prominent, it is becoming increasingly critical to ensure that access to data (read, write, control, etc.) is restricted. As in many aspects of security, RBAC is not just a technology; it is a way of running a business. RBAC is not a new concept; in fact, it is used by many operating systems to control access to system resources. Specifically, RBAC provides an alternative to the all-or-nothing super-user model in which all subjects have access to all data, including control commands. ..."

Be aware that RBAC is required in systems where multiple clients (in the sense of, e.g., IEC 61850) need to access a server. One use case is where multiple power market participants want to manage a power resource. 

New IEC TC 57 and TC 88 CDV Documents Available for Public Comments

Please note that the following documents are now available for public comments:

57/1721/CDV
IEC 61970-452 Ed.3: Energy management system application program interface (EMS-API) - Part 452: CIM static transmission network model profiles

88/587/CDV

IEC 61400-25-1 Ed.2: Wind energy generation systems - Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and models 

Click HERE for accessing the two documents for comments.

Please note that the general title of the series of IEC 61400-25 has changed to "Wind energy generation systems" ... so does the title change as well:

IEC 61400-25-1: Wind energy generation systems -

Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and models