Communication networks and systems for power utility automation - Part 7-1: Basic communication structure - Principles and models

Kommunikationsnetze und -systeme für die Automatisierung in der elektrischen Energieversorgung - Teil 7-1: Grundlegende Kommunikationsstruktur - Grundsätze und Modelle

Réseaux et systèmes de communication pour l'automatisation des systèmes électriques - Partie 7-1: Structure de communication de base - Principes et modèles

Komunikacijska omrežja in sistemi za avtomatizacijo porabe (električne) energije - 7-1. del: Osnovna komunikacijska struktura - Načela in modeli - Dopolnilo A1

General Information

Status
Published
Publication Date
19-Nov-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Oct-2020
Due Date
26-Dec-2020
Completion Date
20-Nov-2020

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SLOVENSKI STANDARD
SIST EN 61850-7-1:2012/A1:2020
01-december-2020

Komunikacijska omrežja in sistemi za avtomatizacijo porabe (električne) energije -

7-1. del: Osnovna komunikacijska struktura - Načela in modeli - Dopolnilo A1

Communication networks and systems for power utility automation - Part 7-1: Basic

communication structure - Principles and models
Kommunikationsnetze und -systeme für die Automatisierung in der elektrischen

Energieversorgung - Teil 7-1: Grundlegende Kommunikationsstruktur - Grundsätze und

Modelle

Réseaux et systèmes de communication pour l'automatisation des systèmes électriques

- Partie 7-1: Structure de communication de base - Principes et modèles
Ta slovenski standard je istoveten z: EN 61850-7-1:2011/A1:2020
ICS:
29.240.30 Krmilna oprema za Control equipment for electric
elektroenergetske sisteme power systems
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
SIST EN 61850-7-1:2012/A1:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61850-7-1:2012/A1:2020
---------------------- Page: 2 ----------------------
SIST EN 61850-7-1:2012/A1:2020
EUROPEAN STANDARD EN 61850-7-1:2011/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2020
ICS 33.200
English Version
Communication networks and systems for power utility
automation - Part 7-1: Basic communication structure -
Principles and models
(IEC 61850-7-1:2011/A1:2020)

Réseaux et systèmes de communication pour Kommunikationsnetze und -systeme für die

l'automatisation des systèmes électriques - Partie 7-1: Automatisierung in der elektrischen Energieversorgung -

Structure de communication de base - Principes et modèles Teil 7-1: Grundlegende Kommunikationsstruktur -

(IEC 61850-7-1:2011/A1:2020) Grundsätze und Modelle
(IEC 61850-7-1:2011/A1:2020)

This amendment A1 modifies the European Standard EN 61850-7-1:2011; it was approved by CENELEC on 2020-10-05. CENELEC

members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the

status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the

responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as

the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 61850-7-1:2011/A1:2020 E
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SIST EN 61850-7-1:2012/A1:2020
EN 61850-7-1:2011/A1:2020 (E)
European foreword

The text of document 57/2201/FDIS, future IEC 61850-7-1/A1, prepared by IEC/TC 57 “Power

systems management and associated information exchange” was submitted to the IEC-CENELEC

parallel vote and approved by CENELEC as EN 61850-7-1:2011/A1:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-07-05

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-10-05

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission

and the European Free Trade Association.
Endorsement notice

The text of the International Standard IEC 61850-7-1:2011/A1:2020 was approved by CENELEC as a

European Standard without any modification.
Remove the following reference:
IEC 61400 series NOTE Harmonized in EN 61400 series.
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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1
Edition 2.0 2020-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 1
AM ENDEMENT 1
Communication networks and systems for power utility automation –
Part 7-1: Basic communication structure – Principles and models
Réseaux et systèmes de communication pour l'automatisation des systèmes
électriques –
Partie 7-1: Structure de communication de base – Principes et modèles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-8481-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 5 ----------------------
SIST EN 61850-7-1:2012/A1:2020
– 2 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
FOREWORD
This amendment 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:
FDIS Report on voting
57/2201/FDIS 57/2221/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication 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 Abbreviated terms
Add the following new terms to the list of abbreviated terms:
MICS Model implementation conformance statement
PICS Protocol implementation conformance statement
SICS SCL implementation conformance statement
5 Overview of the IEC 61850 series concepts
5.3 The information models of substation automation systems

Add, at the end of the third paragraph below Figure 3, the following new footnote:

There is one exception: the proxy/gateway application. For details, refer to 8.2.3 Gateways and proxies.

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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 3 –
© IEC 2020
5.4 Applications modelled by logical nodes defined in IEC 61850-7-4
Figure 4 – Logical node information categories
Replace existing Figure 4 with the following new figure:
5.5 The semantic is attached to data
Figure 6 – Position information depicted as a tree (conceptual)
Replace existing Figure 6 with the following new figure:
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SIST EN 61850-7-1:2012/A1:2020
– 4 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
Replace the first table of Subclause 5.5 with the following new table:
Attribute Attribute type FC TrgOp (Value/value range) Description PresCond
name
stVal DpStatusKind ST dchg Status value of the controllable data object. M
ctlModel CtlModelKind CF dchg Control model as defined in IEC 61850-7-2 M
that reflects the behaviour of the
controllable data object.

Below this table, replace the last item of the dashed list with the following new item:

– the presence conditions, e.g. mandatory (M) or optional (O). These conditions specify

presence of elements in a given context (one LN, or one CDC, or one data attribute type,

or one data object for dataNs) and are specified in IEC 61850-7-2.

After the dashed list, replace the first paragraph and the following table with the following new

paragraph:

The data attribute names are standardised (i.e., they are reserved) names that have a specific

semantic in the context of the IEC 61850 series. The semantic of all data attribute names is

defined in IEC 61850-7-3.
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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 5 –
© IEC 2020
6 Modelling approach of the IEC 61850 series
6.2 Creating information models by stepwise composition
Table 2 – Logical node class XCBR (conceptual)
Replace existing Table 2 with the following new table:
Descriptions
External equipment name plate
Name plate of the logical node
Controls
Switch position (see below for details)
Block opening
Block closing
Charger motor enabled
Control authority at station level. Switches between station and higher level.
Status information
Mode
Behaviour
Health
External equipment health
Operation counter
Local operation (Indicates the switchover between local and remote operation;
local =TRUE, remote =FALSE)
Circuit breaker operating capability
Point on wave switching capability
Circuit breaker operating capability when fully charged
Replace the existing table below Figure 11 with the following new table:
Data object
Explanation
name
... ...
Pos (controllable) Circuit breaker/switch position.
... ...
6.4.2 Output model
6.4.2.1 Control model concept
Figure 14 – Output model (step 1) (conceptual)
Replace existing Figure 14 with the following new figure:
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SIST EN 61850-7-1:2012/A1:2020
– 6 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
Figure 14 – Output model (step 1) (conceptual)
6.4.2.2 GSE and SMV model concept
Add the following new text after the paragraph below Figure 16:

The act of receiving GOOSE and SMV messages by an IED is called subscription. How to

define subscriptions by means of configuration tools is given in the normative Annex H.

6.4.2.4 Setting data and setting group control block
Table 3 – Excerpt of integer status setting
Replace existing Table 3 by the following new table:
ING class
Attribute Attribute FC TrgOp Value/value range PresCond
name type
DataAttribute for configuration, description and extension
setting
setVal INT32 SP dchg The value of the status setting. AtMostOne
setVal INT32 SG, SE The value of the status setting. AtMostOne
configuration, description and extension
minVal INT32 CF dchg Minimum setting for 'setVal'. O
maxVal INT32 CF dchg Maximum setting for 'setVal'. O
stepSize INT32U CF dchg (range=[1...(maxVal-minVal)]) Step between the O
individual values of 'setVal'.
units Unit CF dchg Unit for 'setVal', 'minVal', 'maxVal', 'stepSize'. O
d VISIBLE DC Textual description of the data. In case it is used within O
STRING255 the CDC LPL, the description refers to the logical node.
... ... ... ...
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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 7 –
© IEC 2020
6.4.3 Input model
6.4.3.2 Data attribute value processing, monitoring and event detection

Replace the last sentence of the second paragraph with the following new sentence:

The value of mag shall be updated to the current value of instMag when the value has

changed according to the value of the configuration parameters db and dbRef of this data.

Replace Figure 19 and the subsequent paragraph with the following new figure and text:

Figure 19 – Range and deadbanded value (conceptual)

The value of the deadband configuration db shall represent the percentage of the deadband

reference dbRef in units of 0,001 % (fixed deadband). A value of dbRef of 0 means that the

value db shall represent the percentage of the last transmitted values in units of 0,001 %.

This allows for a deadband calculation that is related to the last refreshed value (variable

deadband).
Figure 20 – Input model for analogue values (step 2) (conceptual)
Replace existing Figure 20 with the following new figure:
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SIST EN 61850-7-1:2012/A1:2020
– 8 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
Remove the fourth paragraph below Figure 20.
6.4.3.3.2 Data reporting
Replace existing Table 4 with the following new table:
Table 4 – Comparison of the data access methods
Retrieval Time-critical Can lose Multiple Last change Typical client
method information changes (of clients to receive of data stored (but not
exchange sequence) information by exclusive)
Polling NO YES YES – Browser
(GetDataValues)
Unbuffered YES YES NO – Real-time GUI
Reporting
Buffered YES NO NO Server Data
Reporting concentrator
Log (used for NO NO YES Server Engineering
SOE logging) stations
Replace the existing paragraph before Figure 23 with the following new text:
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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 9 –
© IEC 2020

The basic buffered reporting mechanism is shown in Figure 23. The buffered and unbuffered

reporting starts with the reservation of the report control block by the client, followed by

configuration of the report control block, including the verification that the report control block

parameters are meeting the needs of the client. The reporting to the client starts with setting

the enable buffer attribute to TRUE; setting to FALSE stops the reporting to the client.

Before the last sentence of the first paragraph below Figure 23 add the following new

sentence.
The buffering is independent from the reporting being enabled or not.
6.4.3.4 Peer-to-peer data value publishing
Replace the last paragraph of 6.4.3.4 by the new following new text:

Which event triggers the publishing of values as well as how often and how fast the values

are to be published is a matter of the requirements of the function being implemented.

6.4.4 Model for statistical and historical statistical data
Figure 28 – Conceptual model of statistical and historical statistical data (1)
Replace existing Figure 28 with the following new figure:
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SIST EN 61850-7-1:2012/A1:2020
– 10 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
Replace the penultimate paragraph before Figure 29 with the following new text:

The lower part of the figure shows the conceptual model of the historical statistical data. In

this model, the values are calculated periodically (in this case the maximum values with

calculation mode set to PERIOD) and are stored in sequence in a log. The calculation in the

example starts at midnight of 2004-10-03. The interval is 1 h. After the first hour, the first log

entry is written. After the second hour, the second entry contains the value of the second

hour. After 5 h, the log contains the values of the last three hours (intervals 02-03, 03-04, 04-

05). The expiration of the statistical calculation is indicated by the “event” ClcExp set to TRUE

and at this moment the statistical values that have the trigger option dupd are logged even if

---------------------- Page: 14 ----------------------
SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 11 –
© IEC 2020

the values have not changed. The same concept can be applied to the reporting of statistical

data.
Remove the last paragraph of Subclause 6.4.4.
6.4.5 Model for system functions
6.4.5.1 General
Remove the last two sentences of Subclause 6.4.5.1.
6.4.5.5 GOOSE and SMV supervision
Add the following new text at the end of Subclause 6.4.5.5:

The normative Annex G describes the configuration flow with regards to these supervision

logical nodes.
7 Application view
7.3 Mode and behaviour of a logical node
Replace “on-blocked” by “blocked” in the first paragraph below Figure 37.
7.7 Data used for logical node inputs/outputs blocking (operational blocking)
Figure 39 – Data used for logical node inputs/outputs blocking (IEC 61850-7-4)
Replace existing Figure 39 by the following new figure:
7.7.2 Blocking incoming commands

Add, at the end of the last paragraph of Subclause 7.7.2, the following new text:

---------------------- Page: 15 ----------------------
SIST EN 61850-7-1:2012/A1:2020
– 12 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
or CmdBlk itself.
7.7.3 Blocking process outputs
Replace the existing text of Subclause 7.7.3 by the following new text:

The data Mod (Mode) is used to put an LN in different modes. The mode test/blocked (Beh=

test/blocked or Beh=blocked) shall be interpreted as the mode which explicitly disables any

physical outputs having an effect on the process. For example, when

XCBR.Beh = test/blocked or blocked, the physical outputs for closing/opening the breaker do

not operate and the breaker does not close or open respectively.
7.7.4 Blocking oscillating inputs
Replace the title of 7.7.4 with the following new text:
Blocking the communication of status outputs updates
Replace the first sentence of 7.7.4 with the following new text:

An operator, or an automatic function, may block the update of the value of communication

outputs (e.g. updates related to oscillating inputs).
7.8 Data used for testing
7.8.2 Multicast signals used for simulation
Replace the third paragraph of 7.8.2 with the following new text:

To allow the IED1 to process the simulated GOOSE 1 message instead of the actual GOOSE

message, the data Sim.stVal in the LN LPHD1 shall be set to TRUE. The process of the

simulated message only takes effect upon receiving the first simulated message. This will

remain as such until Sim.stVal is set back to ‘FALSE’. The processing of the simulated

message is made on a per GOOSE/SMV basis, i.e. the other signals, GOOSE 2 and GOOSE

3, are normally processed by the IED1. Note that the switching between normal signals and

simulated signals shall be done for the entire IED. In the example, this means that if a new

simulated GOOSE 2 signal appears, it will replace the actual GOOSE 2 signal. The preceding

example does not imply any specific sequence with regards to connecting the simulation

device and setting the data Sim.stVal to TRUE. Different sequences may be used. However, a

state machine diagram can be found in Figure 80 and Figure 81 that describes the different

states involved and illustrates the supervision of GOOSE/SV subscription with regards to the

active subscription state resp. the subscription to simulated stream. The affected Data

Objects are defined in the Logical Nodes LGOS and LSVS in IEC 61850-7-4.

Add, at the end of the third paragraph of 7.8.2, the following new Figures 80 and 81:

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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 13 –
© IEC 2020
Figure 80 – GOOSE subscription supervision state machine
Figure 81 – SV subscription supervision state machine
7.8.3 Input signals used for testing
Figure 41 – Example of input signals used for testing
Replace existing Figure 41 with the following new figure:
---------------------- Page: 17 ----------------------
SIST EN 61850-7-1:2012/A1:2020
– 14 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
Add the following new text at the end of the last paragraph of 7.8.3:

The signal specified in setTstRef, the associated control block srcTstCB shall be consistent

and relate to a fully configured (i.e. including the communication configuration when

necessary) control block in the SCD file.
7.8.4 Test mode
Figure 42 – Test mode example
Replace existing Figure 42 by the following new figure:
Replace the last paragraph of Subclause 7.8.4 with the following new text:
---------------------- Page: 18 ----------------------
SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 15 –
© IEC 2020

The detailed requirements for the different states of Mod/Beh can be found in IEC 61850-7-4.

8 Device view
8.2 Second modelling step – logical device model
8.2.1 The logical device concepts
Replace the second paragraph below Figure 44 with the following new text:

In the example of Figure 45, logical device “LD1” contains three logical nodes: LLN0, LPHD

and LN, the latter representing an application specific LN as defined in the IEC 61850-7-x

series. The logical node zero (LLN0) represents common data of the logical device. For

example, the mode of LLN0 is used to control the mode of the whole logical device and, as a

result, the mode of every logical node being part of the logical device. The logical node

physical device (LPHD) represents common data of the physical device hosting the logical

device. LLN0 shall be defined in every logical device while LPHD shall be defined in at least

one logical device. There exist many other system logical nodes (Group L) belonging to the

IED, e.g. LTRK which allows tracking of service parameters for a server within the IED or

LTIM which serves for diverse configurations regarding the local time of an IED. Figure 45

shows an example of a good practice. The logical device called “SYS” groups all system

logical nodes belonging to the same IED. Note that these system logical nodes could also be

spread in a hierarchy of logical devices (see 8.2.5).
8.2.3 Gateways and proxies

Replace the existing text of Subclause 8.2.3, including Figure 47, with the following new text

and figures:

Gateways are network interconnection devices that translate protocols to other protocols. For

example, gateways may convert non IEC 61850 data into IEC 61850 data.

Proxies are special devices that mirror logical devices located in other IEC 61850 physical

devices. Hence, these logical devices are, from a functional point of view, transparent. They

can be identified independently of their location (in a separate device connected to the

network or in a proxy device).
Logical devices allows for the building of proxies and/or gateways.

Figure 47 shows how a physical device is mapped to a device acting as a proxy and/or a

gateway. In the figure, LN refers to an application specific LN as defined in the IEC 61850-7-x

series.

The logical device IED1LD1 is “copied” to the proxy/gateway. The LPHD of IED1LD1 in the

proxy/gateway represents the physical device IED1.

Logical devices that mirror logical devices of other physical devices shall provide a LPHD that

represents the remote physical device on which the original LD resides (e.g., IED1LD1).

These logical devices shall have the data LPHD.Proxy.stVal of the LPHD set to TRUE.

Logical devices that do not mirror logical devices of other physical devices shall provide a

LPHD that represents the physical device on which they reside. In Figure 47, this logical

device is PXY_GTW1LD1, which shall be implemented to represent the information about the

proxy/gateway itself. The logical nodes LLN0 and LPHD of this logical device shall represent

information about the proxy/gateway device. The logical device may also contain domain

specific logical nodes.
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– 16 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020

In the example, the physical device IED2 is also proxied by the proxy/gateway. The device

contains a hierarchy of logical devices. In this case, the LPHD that represents the remote

physical device in the proxy/gateway is declared only at the root of the hierarchy.

Figure 47 also shows how non IEC 61850 external physical devices are mapped to the

proxy/gateway device. IED3LD1 is used to represent the information related to the non

IEC 61850 physical device IED3. The LPHD of IED3LD1 represents the physical device IED3.

The data supplied by IED3 is mapped to different logical nodes into IED3LD1.
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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 17 –
© IEC 2020
Figure 47 – Logical devices in proxies or gateways
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SIST EN 61850-7-1:2012/A1:2020
– 18 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020

Figure 79 shows the same example using the functional naming of the logical devices. One

can see that it is possible to make the names of the proxied logical devices exactly the same

as the ones in the source logical devices. This is possible as long as the respective access

points (Server of the Proxy and original Server) are not connected to the same network: the

name of the logical device shall be unique within the scope of a network.
Figure 79 – Logical devices in proxies or gateways (functional naming)
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IEC 61850-7-1:2011/AMD1:2020 – 19 –
© IEC 2020
8.2.4 Logical devices for monitoring external device health
Figure 48 – Logical devices for monitoring external device health
Replace existing Figure 48 with the following new figure:
8.2.5 Logical devices management hierarchy

In the second paragraph of Subclause 8.2.5, replace “object reference setting group” with

“object reference setting”.

Replace the third and fourth items in the dashed list with the following new text:

– the logical node class LPHD shall be present in any root logical device, i.e. any LD where

the LLN0 does not contain a data object GrRef. It may also be present at other levels of

the hierarchy,

– a proxy LD shall only be present at the root logical device, applying to all other level of the

associated hierarchy,
9 Communication view
9.2 The service models of the IEC 61850 series
Table 5 – ACSI models and services

Replace, in Table 5, the row "Transmission of sampled values" with the following new row.

---------------------- Page: 23 ----------------------
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– 20 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020

Transmission of Fast and cyclic transfer of samples, for example, of Multicast SVC:

sampled values instrument transformers. SendMSVMessage
GetMSVCBValues
SetMSVCBValues
GetMsvReference
GetMSVElementNumber
9.6 Logical nodes communicate with logical nodes
Figure 60 – Logical nodes communicate with logical nodes
Replace existing Figure 60 with the following new figure:
Replace the last paragraph of Subclause 9.6 with the following new text:

Note that the SCL configuration language (see IEC 61850-6) allows the configuration of the

data flow between LNs using elements “ExtRef” (see Annex H).
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SIST EN 61850-7-1:2012/A1:2020
IEC 61850-7-1:2011/AMD1:2020 – 21 –
© IEC 2020
11 Relationships between IEC 61850-7-2, IEC 61850-7-3 and IEC 61850-7-4
11.2 Example 1 – Logical node and data object class
Replace the first paragraph of Subclause 11.2 with the following new text:

Table 6 shows an example of a list of data object classes for a circuit breaker. The name of

the circuit breaker class is "XCBR". The data object classes that make up the circuit breaker

are grouped into four categories (descriptions, status information, controls, and settings).

Each category comprises some data object classes, for example, "Mode" and “Switch

position”. These data object classes are referenced by their data object name: "Mod" and

"Pos". To be more precise, each data object class also has a common data class, defining the

details, i.e. the attributes of the data object class. The last column specifies the presence

conditions that can be applicable to the data object class, i.e. whether this data object class is

mandatory (M), optional (O), in some cases forbidden (F) or can be instantiated many times

(multi). This column specifies two contexts for the presence conditions: nds for the common

context of Non Derived Statistical case and ds for the specific context where the LN instance

is derived from another one (Derived Statistical). Refer to IEC 61850-7-4 for a detailed

explanation. It follows that for each data object two presence conditions are expressed, one

object in case of nds context and a second in case of ds context. For example, the data object

Pos is mandatory (M) in the nds context and forbidden in the ds context (F).
Replace existing Table 6 by the following new table:
---------------------- Page: 25 ----------------------
SIST EN 61850-7-1:2012/A1:2020
– 22 – IEC 61850-7-1:2011/AMD1:2020
© IEC 2020
Table 6 – Logical node circuit breaker
Logical Node: Circuit breaker Name: XCBR
Data object Class Data object Common Data Class (CDC) PresCond
Name nds/ds
Descriptions
Name plate of the logical node. NamPlt LPL – Logical node name plate MONamPlt/
MONamPlt

Name plate of external (electrical, mechanical EEName DPL – Device name plate O/F

or communication) equipment to which the
logical node is associated.
Controllable Data

(controllable) Operating mode of the domain Mod ENC – Controllable integer status O/

...

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