IEC TS 61850-7-7:2018/AMD1:2023

IEC TS 61850-7-7 ®
Edition 1.0 2023-01
TECHNICAL
SPECIFICATION
colour
inside
AMENDMENT 1
Communication networks and systems for power utility automation –
Part 7-7: Machine-processable format of IEC 61850-related data models for tools

IEC TS 61850-7-7:2018-03/AMD1:2023-01(en)

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IEC TS 61850-7-7 ®
Edition 1.0 2023-01
TECHNICAL
SPECIFICATION
colour
inside
AMENDMENT 1
Communication networks and systems for power utility automation –

Part 7-7: Machine-processable format of IEC 61850-related data models for tools

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-6351-8

– 2 – IEC TS 61850-7-7:2018/AMD1:2023
© IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 7-7: Machine-processable format
of IEC 61850-related data models for tools

AMENDMENT 1
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC TS 61850-7-7:2018 has been prepared by IEC technical
committee 57:Power systems management and associated information exchange.
The text of this Amendment is based on the following documents:
Draft Report on voting
57/2471/DTS 57/2523/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.

© IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications/.
A list of all parts in the IEC 61850 series, published under the general title Communication
networks and systems for power utility automation, can be found on the IEC website.
This IEC standard includes Code Components i.e. components that are intended to be directly
processed by a computer. Such content is any text found between the markers BEGINS> and , or otherwise is clearly labeled in this standard as a Code
Component.
The purchase of this IEC standard carries a copyright license for the purchaser to sell software
containing Code Components from this standard directly to end users and to end users via
distributors, subject to IEC software licensing conditions, which can be found at:
http://www.iec.ch/CCv1.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 4 – IEC TS 61850-7-7:2018/AMD1:2023
© IEC 2023
INTRODUCTION
Add, at the end of the Introduction, the following new text:
The description of namespace concept and relation between each kind of namespace is defined
by IEC 61850-7-1 and process for creation of a namespace (domain, product, …) is defined by
IEC 61850-1-2.
© IEC 2023
1 Scope
1.1 General
Replace the existing last paragraph of Subclause 1.1 with the following new text:
The purpose of this document is limited to the publication of the XML format which should
support the data model part of any IEC 61850-related standard. The publication of code
components themselves will be part of the related IEC 61850 part, and IEC 61850-1-2 will
indicate the requirements to produce NSD files for other purpose than core datamodel.
1.2 Namespace name and version
Replace the existing title and text of Subclause 1.2 by the following new title and text:
1.2 Published versions
This technical specification defines one namespace:
– A NameSpace Definition (NSD)
Table 1 provides an overview of the references between the published versions of this standard
and the related namespace name.
Table 1 – Reference between published versions of the standard
and related namespace name
Edition Publication date Webstore Namespace
Edition 1.0 2018-03 IEC 61850-7-7:2018 IEC 61850-7-7:2017A
Edition 1.1 2023-01 IEC 61850-7-7:2022 IEC 61850-7-7:2017B5

Add, after Subclause 1.2, the following new Subclause 1.4:
1.4 Namespace name and version
Table 2 shows all the attributes of the XML schema namespace.
Table 2 – Attributes of xsd namespace
Attribute Content
Namespace nameplate
Namespace Identifier (xmlns) http://www.iec.ch/61850/2016/NSD
XSD version header attribute 2017B5
Version 2017
Revision B
Release 5
CodeComponentName NSD
1.3 Code Component distribution
Replace the existing text of Subclause 1.3 by the following new text:

– 6 – IEC TS 61850-7-7:2018/AMD1:2023
© IEC 2023
1.3.1 General
Each Code Component is a ZIP package containing at least the electronic representation of the
Code Component itself and a file describing the content of the package (IECManifest.xml).
The life cycle of a code component is not restricted to the life cycle of the related publication.
The publication life cycle goes through two stages, Version (corresponding to an edition) and
Revision (corresponding to an amendment). A third publication stage (Release) allows
publication of Code Component in case of urgent fixes of InterOp Tissues, thus without need to
publish an amendment.
Consequently, new release(s) of the Code Component may be released, which supersede(s)
the previous release, and will be distributed through the IEC TC 57 web site at:
http://www.iec.ch/tc57/supportingdocuments
The latest version/release of the document will be found by selecting the file for the code
component with the highest value for VersionStateInfo, e.g.
IEC TS 61850-7-7.NSD.{VersionStateInfo}.full.zip.
1.3.2 XML schema namespace code component
The NSD code component namespace is an XML schema file. It will be available in a full version.
The full version is freely accessible on the IEC website for download at:
https://assets.iec.ch/public/tc57/IEC_61850-7-7.2017.NSD.2017B4.full.zip
but the usage remains under the licensing conditions.
In case of any differences between the downloadable code and the IEC pdf published content,
the downloadable code(s) is(are) the valid one; it may be subject to updates. See history files.
2 Normative references
Add the following new reference:
IEC TS 61850-1-2, Communication networks and systems for power utility automation –
Part 1-2: Guidelines on extending IEC 61850
Replace the existing references to IEC TS 61850-2 and IEC 61850-7-1 with the following new
references:
IEC TS 61850-2, Communication networks and systems for power utility automation – Part 2:
Glossary
IEC 61850-7-1:2011, Communication networks and systems for power utility automation –
Part 7-1: Basic communication structure – Principles and models
6.3.2 Core namespace
Replace the existing text of the first paragraph of Subclause 6.3.2 with the following new text:
Core namespaces are related to original data model from IEC 61850. These cover:
IEC 61850-7-2, IEC 61850-7-3 and IEC 61850-7-4.

© IEC 2023
7.1 General
Replace the existing text of the first paragraph of Subclause 7.1 with the following new text:
Like SCL format (defined in IEC 61850-6), the machine-processable format is based on the
Extensible Markup Language (XML) standard to represent namespaces. The format itself is
called Namespace Definition (NSD).
7.2.1.2 Root element
Replace the existing text of Subclause 7.2.1.2 with the following new text:
The NSD file has the root element NS to identify the namespace represented with the ID, version
revision and release (both are optional):

In addition to namespace identification, the root element also indicates:
– publicationStage which allows to know if the NSD is an IS, TR, TS or a draft used during
standard development,
– namespaceType to indicates following kind a namespace: basic, domain, transitional,
product or private,
– umlDate and umlVersion to indicates the IEC 61850 UML version used to generate current
NSD,
– deprecated will allow to indicate when a namespa
...