IEC TS 63266:2023

Representation of communication in power utility automation

IEC TS 63266:2023 specifies a structure for representation of exchanged information that is essential for testing and maintenance of the devices in power utility automation systems. It is mainly intended to be applied to communication equipment that communicate information in accordance with IEC 61850 (all parts) in at least one part of their communication flow.
The following communication equipment is included within the scope:
– optical instrument transformer;
– conventional instrument transformers related to IEC 61850 traffic;
– merging unit;
– stand-alone merging unit;
– protection, control and measuring devices with at least one IEC 61850 interface;
– switchgear control unit (breaker IED);
– switchgear providing IEC 61850 interface;
– IEC 61850 time synchronization device;
– IEC 61850 gateway (RTU) and station HMI;
– digital disturbance recorder / digital fault recorder;
– digital communication protocol gateways with at least one IEC 61850 interface;
– protection, control and measuring devices that utilise a proprietary protocol for communication with devices that have at least one IEC 61850 interface.
The following communication equipment, scheme and protocols are excluded from the scope:
– IEC 61850 Ethernet switches and network topology;
– PMU phasor measurement unit with at least one IEC 61850 interface;
– the full path of substation-to-substation communication;
EXAMPLE 1: The description of R­GOOSE Publisher in substation A does not include the description of R GOOSE Subscriber in substation B.
– functions with only hardwired communication, e.g. direct analogue copper wired connection;
EXAMPLE 2: A current transformer connected to a protection relay with hardwired tripping of a circuit breaker.
– functions using only proprietary communication protocol systems;
EXAMPLE 3: A dedicated system for collecting disturbance recorder files with courier protocol or path from IEC 60870­5­103 to IEC 60870-5-101 will not be presented in this document.
– protocol mappings to XMPP (IEC 61850-8-2).
This document forms a supplement to other documentation standards in power utility automation.
It also harmonizes the representation of the logical data flow structures based on IEC 61850 communication among different devices in order to provide a reference document that can be created for any IEC 61850 substation.
This document focuses in principle on the visualization of the digital information exchanged between IEDs and control or measurement devices in a power utility automation system. The information visualization does not refer to any graphical modelling but to a tabular format of presentation. The data in tabular format can be used as a basis for other kinds of visual presentation outside the scope of this document.
For representing all kinds of substation information, a single suitable tabular form is not possible to find. This document instead presents a limited number of high visual performance representation formats.
Presentation formats described in this document provide interactive visualization that assists users in analysing data and identifying some important and essential information in a more efficient way.

General Information

• Status: Published
• Publication Date: 14-Sep-2023
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: TC 3 - Documentation, graphical symbols and representations of technical information
• Drafting Committee: JWG 17 - TC 3/JWG 17
• Current Stage: PPUB - Publication issued
• Start Date: 22-Sep-2023
• Completion Date: 15-Sep-2023

Standards Content (Sample)

IEC TS 63266 ®
Edition 1.0 2023-09
TECHNICAL
SPECIFICATION
Representation of communication in power utility automation

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: [e-mail].
IEC TS 63266 ®
Edition 1.0 2023-09
TECHNICAL
SPECIFICATION
Representation of communication in power utility automation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200  ISBN 978-2-8322-7501-6

– 2 – IEC TS 63266:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 9
4 General description of physical resource documentation. 10
4.1 Secondary system documentation description . 10
4.2 Target users of the documentation . 10
4.3 Use cases . 11
5 Documentation requirement . 11
6 Physical source of communication description in tabular format . 11
6.1 Sampled value presentation . 11
6.1.1 General . 11
6.1.2 Creation of sampled values, LPIT . 12
6.1.3 Sample values publisher to subscriber . 13
6.1.4 Creation of sampled values by a SAMU . 15
6.2 GOOSE communication presentation . 17
6.2.1 General . 17
6.2.2 Publisher to subscriber . 17
6.3 Client-to-server control presentation . 19
6.4 Reporting . 21
6.5 Time synchronization . 23
6.5.1 General . 23
6.5.2 SNTP time synchronization . 23
6.5.3 PTP IEC/IEEE 61850-9-3 time synchronization . 24
6.6 Disturbance recorder . 26
6.7 Digital communication protocol gateways . 28
6.8 Protection and control devices with only proprietary communication protocol . 28
Annex A (informative) Representation of information concept for power utility
automation . 30
Bibliography . 31

Figure 1 – Example of an optical instrument transformer with digital output (LPIT) . 12
Figure 2 – Sample values publisher (IED 1) to subscriber (IED 2) . 14
Figure 3 – Analogue transformer connected to a SAMU . 15
Figure 4 – Communication scheme of publisher (IED 1) to subscriber (IED 2) . 18
Figure 5 – Communication scheme of client to server . 19
Figure 6 – Communication scheme of server to client . 21
Figure 7 – Communication scheme of SNTP time synchronization . 23
Figure 8 – Communication scheme of PTP IEC/IEEE 61850-9-3 . 25
Figure 9 – Communication scheme of disturbance recorder . 27
Figure 10 – Communication scheme of digital communication protocol gateways . 28

Figure 11 – Communication scheme of protection and control devices with only
proprietary communication protocol . 29
Figure A.1 – Positioning of the RCCA within the documentation system for an

IEC 61850 substation . 30

Table 1 – Abbreviations . 9
Table 2 – Data presentation for use in SV communication . 12
Table 3 – Information about all MUs connected to the instrument transformer for data
stream n. 13
Table 4 – Communication between the publishing MU and the subscribing IEDs . 14
Table 5 – Presentation of subscriber n to an SV stream . 15
Table 6 – Data presentation for use in SV communication . 16
Table 7 – Presentation of a SAMU connected to a conventional transformer . 17
Table 8 – Presentation of a publisher of a GOOSE . 18
Table 9 – Presentation of Subscriber to a GOOSE . 19
Table 10 – Presentation of MMS client . 20
Table 11 – Presentation of MMS server . 21
Table 12 – Presentation of an MMS report server . 22
Table 13 – Presentation of an MMS report client . 23
Table 14 – Presentation of a SNTP server . 24
Table 15 – Presentation of a client . 24
Table 16 – Presentation of PTP GMC . 25
Table 17 – Presentation of a PTP slave clock . 26
Table 18 – Presentation of disturbance recorder, server . 27
Table 19 – Presentation of disturbance recorder, client . 27
Table 20 – Presentation of communication conversion . 28
Table 21 – Presentation of protection and control device with proprietary
communication protocol . 29

– 4 – IEC TS 63266:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REPRESENTATION OF COMMUNICATION
IN POWER UTILITY AUTOMATION
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.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC TS 63266 has been prepared by IEC technical committee 3: Documentation, graphical
symbols and representations
...