Energy management system application program interface (EMS-API) - Part 600-1: Common Grid Model Exchange Specification (CGMES) - Structure and rules

IEC 61970-600-1:2021 covers the definition of Common Grid Model Exchange Standard (CGMES), defines the main rules and application’s requirements to meet business requirements for assembled and merged model to fit relevant business services. This document does not define the business requirements, business processes nor how applications are implemented. This document defines how relevant Common Information Model (CIM) standards work together so that specific business requirements can be resolved. It also includes extensions to the Common Information Model (CIM). The current extensions are defined in IEC 61970-301:2020 and will be covered in its future Amendment 1, but additional extensions can be defined in other standards in the IEC 61970-600-series. The extensions can be used to define additional profiles or to expand IEC 61970-450-series or IEC 61968-13 profiles. However, primary CGMES includes additional constraints on existing profiles and validation of assembled and merged models that is based on existing profiles. This can be done by making optional attributes and associations mandatory (required). In addition, this document includes the specification of the serialisation that must be supported by referring to an existing standard defined in IEC 61970-550-series, e.g. IEC 61970-552, and making relevant constraints related to it. The goal is to achieve interoperability between applications using CGMES in a high-performance environment with combined minimum effort so that relevant business processes are satisfied. This first edition cancels and replaces IEC TS 61970-600-1 published in 2017. This edition constitutes a technical revision.

Schnittstelle der Anwendungsprotokolle von Energieverwaltungssystemen (EMS-API) - Teil 600-1: Spezifikation für den Austausch von Elektrizitätsversorgungssystemmodellen (CGMES) - Strukturen und Regeln

Interface de programmation d'application pour système de gestion d'énergie (EMS-API) – Partie 600-1: Spécification pour l'échange de modèle de réseau commun (CGMES) – Structure et règles

Aplikacijski programski vmesnik za sistem upravljanja z energijo (EMS-API) - 600-1. del: Specifikacija izmenjave skupnega modela mreže (CGMS) - Struktura in pravila

General Information

Status
Published
Publication Date
11-Oct-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Oct-2021
Due Date
10-Dec-2021
Completion Date
12-Oct-2021

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SLOVENSKI STANDARD
SIST EN IEC 61970-600-1:2021
01-november-2021

Aplikacijski programski vmesnik za sistem upravljanja z energijo (EMS-API) - 600-

1. del: Specifikacija izmenjave skupnega modela mreže (CGMS) - Struktura in
pravila
Energy management system application program interface (EMS-API) - Part 600-1:
Common Grid Model Exchange Specification (CGMES) - Structure and rules
Ta slovenski standard je istoveten z: EN IEC 61970-600-1:2021
ICS:
29.240.30 Krmilna oprema za Control equipment for electric
elektroenergetske sisteme power systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN IEC 61970-600-1:2021 en

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

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SIST EN IEC 61970-600-1:2021
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SIST EN IEC 61970-600-1:2021
EUROPEAN STANDARD EN IEC 61970-600-1
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2021
ICS 33.200
English Version
Energy management system application program interface
(EMS-API) - Part 600-1: Common Grid Model Exchange
Standard (CGMES) - Structure and rules
(IEC 61970-600-1:2021)

Interface de programmation d'application pour système de Schnittstelle der Anwendungsprotokolle von

gestion d'énergie (EMS-API) - Partie 600-1: Spécification Energieverwaltungssystemen (EMS-API) - Teil 600-1:

pour l'échange de modèle de réseau commun (CGMES) - Spezifikation für den Austausch von

Structure et règles Elektrizitätsversorgungssystemmodellen (CGMES) -
(IEC 61970-600-1:2021) Strukturen und Regeln
(IEC 61970-600-1:2021)

This European Standard was approved by CENELEC on 2021-07-09. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard 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 European Standard 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

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61970-600-1:2021 E
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SIST EN IEC 61970-600-1:2021
EN IEC 61970-600-1:2021 (E)
European foreword

The text of document 57/2366/FDIS, future edition 1 of IEC 61970-600-1, 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 IEC 61970-600-1:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2022–04–09

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024–07–09

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.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 61970-600-1:2021 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 61970-501:2006 NOTE Harmonized as EN 61970-501:2006 (not modified)
IEC 61970-452 NOTE Harmonized as EN 61970-452
IEC 61970-453 NOTE Harmonized as EN 61970-453
IEC 61970-456 NOTE Harmonized as EN IEC 61970-456
IEC 61968-13 NOTE Harmonized as EN IEC 61968-13
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SIST EN IEC 61970-600-1:2021
EN IEC 61970-600-1:2021 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61970-301 2020 Energy management system application EN IEC 61970-301 2020
program interface (EMS-API) - Part 301:
Common information model (CIM) base
IEC 61970-302 2018 Energy management system application EN IEC 61970-302 2018
program interface (EMS-API) - Part 302:
Common information model (CIM)
dynamics
IEC 61970-552 2016 Energy management system applicationEN 61970-552 2016
program interface (EMS-API) - Part 552:
CIMXML Model exchange format
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SIST EN IEC 61970-600-1:2021
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SIST EN IEC 61970-600-1:2021
IEC 61970-600-1
Edition 1.0 2021-06
INTERNATIONAL
STANDARD
colour
inside
Energy management system application program interface (EMS-API) –
Part 600-1: Common Grid Model Exchange Standard (CGMES) – Structure and
rules
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-9814-5

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

® Registered trademark of the International Electrotechnical Commission
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SIST EN IEC 61970-600-1:2021
– 2 – IEC 61970-600-1:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 9

3 Terms, definitions and abbreviated terms ...................................................................... 10

3.1 Terms and definitions ............................................................................................ 10

3.2 Abbreviated terms ................................................................................................. 11

4 Data exchange context .................................................................................................. 12

5 Specifications and functionalities ................................................................................... 15

5.1 General constraints ............................................................................................... 15

5.2 Model authority sets (MAS) ................................................................................... 17

5.3 File header ........................................................................................................... 18

5.4 File body ............................................................................................................... 19

5.5 Profiles and instance file types.............................................................................. 19

5.5.1 General ......................................................................................................... 19

5.5.2 CGMES profiles’ properties ........................................................................... 19

5.5.3 CGMES extensions ........................................................................................ 21

5.5.4 Equipment profile and instance file ................................................................ 22

5.5.5 Topology profile and instance file .................................................................. 23

5.5.6 Steady state hypothesis profile and instance file ............................................ 23

5.5.7 State variables profile and instance file ......................................................... 24

5.5.8 Equipment boundary profile and instance file ................................................. 24

5.5.9 Topology boundary profile and instance file ................................................... 24

5.5.10 Diagram layout profile and instance file ......................................................... 24

5.5.11 Geographical location profile and instance file ............................................... 25

5.5.12 Dynamics profile and instance file .................................................................. 25

5.6 File exchange ....................................................................................................... 26

5.7 Boundary point – properties and location .............................................................. 27

5.8 Model merging process ......................................................................................... 29

5.9 CIM XML document/distribution validity ................................................................. 32

5.10 Naming Convention ............................................................................................... 33

6 CGMES governance ...................................................................................................... 36

6.1 General ................................................................................................................. 36

6.2 Versions of the CGMES and the profiles ............................................................... 37

6.3 Conformity assessment ......................................................................................... 38

6.4 Implementation process ........................................................................................ 38

Annex A (xxxx) ..................................................................................................................... 39

Annex B (normative) File header guidelines ......................................................................... 40

B.1 General ................................................................................................................. 40

B.2 Exchange scenarios .............................................................................................. 40

B.3 Examples .............................................................................................................. 41

B.3.1 Example 1: File header of full model .............................................................. 41

B.3.2 Example 2: File header of full model that is depending on another

model ............................................................................................................ 42

B.3.3 Example 3: File header of full model that is depending on a model and

supersedes another model ............................................................................. 43

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SIST EN IEC 61970-600-1:2021
IEC 61970-600-1:2021 © IEC 2021 – 3 –
B.3.4 Example 4: File header of difference model that is depending on a full

model and supersedes another full model ...................................................... 44

B.3.5 Example 5: File header of difference model that is depending on a

difference model and supersedes another difference model ........................... 45

Bibliography .......................................................................................................................... 47

Figure 1 – CGMES instance file dependency ........................................................................ 20

Figure 2 – Boundary point placed on a tie-line ...................................................................... 27

Figure 3 – Boundary point placed in a substation .................................................................. 27

Figure 4 – HVDC as interconnection or internal line .............................................................. 28

Figure 5 – HVDC grid ............................................................................................................ 28

Figure 6 – Merge process ..................................................................................................... 31

Figure B.1 – Example workflow events .................................................................................. 40

Table 1 – IdentifiedObject attributes ..................................................................................... 36

Table 2 – IdentifiedObject attributes in EQBD profile ............................................................ 36

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SIST EN IEC 61970-600-1:2021
– 4 – IEC 61970-600-1:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENERGY MANAGEMENT SYSTEM APPLICATION
PROGRAM INTERFACE (EMS-API) –
Part 600-1: Common Grid Model Exchange Standard (CGMES) –
Structure and rules
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

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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.

International Standard IEC 61970-600-1 has been prepared by IEC technical committee 57:

Power systems management and associated information exchange.

This first edition cancels and replaces IEC TS 61970-600-1 published in 2017. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to

IEC TS 61970-600-1:2017:
• Terms and definitions were updated.

• The “Type” column in all tables was deleted to increase readability of the document as all

the rules are considered required, hence categorisation is not necessary.

• Requirement HGEN4 was added to define additional rules to the file header compared to

IEC 61970-552:2016.
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SIST EN IEC 61970-600-1:2021
IEC 61970-600-1:2021 © IEC 2021 – 5 –

• Annex B on “Summary of specific rules for naming conventions” is deleted as the information

was either integrated in the UML or considered outdated.

• Annex D referring to the PST modelling is deleted as it will be fully integrated in

IEC 61970-301:2020+AMD1 .

• Annex E “Implementation guide” is deleted as all rules and implementation guidance is or

will be integrated in either Clause 5 of this document or IEC 61970-301:2020 (and its future

Amendment 1) or IEC 61970-452 or IEC 61970-456 as referenced by this document. Note

that former Subclause E.11.2 on ConformLoadGroup and NonConformLoadGroup was

implemented differently due to another issue, please refer to IEC 61970-600-2:2020.

• Rules GENC17, GENC18, GENC19, EQ__4, EQ__5, SV__4, BPPL12, BPPL13, MVAL5,
EXCH9, TP__4 and MARP12 were added.
• Rules GENC3, GENC6, PROF2, PROF4, PROF5, PROF8, PROF9, EXCH5, EXCH6,
EXCH7, MAS_4, MAS_6, MAS_9, MAS_10, MAS_11, MAS_13, EQ__1, HREF2, HREF3,
HREF5, MVAL3, TPBD1, TPBD2, BPPL10, NAMC12 and NAMC13 are deleted as they are
considered not relevant due to other changes.
• The following rules were modified: GENC1, GENC2, GENC4, GENC5, GENC7, GENC8,
GENC9, GENC10, GENC16, EQBD2, BPPL11, EXCH2, EXCH3, EXCH8, FBOD3, FBOD5,
PROF10, PROF11, MAS_1, MAS_8, HGEN3, HREF1,EEXT1, EQ__2, TP__1, TP__2,
TP__3, MARP10, MARP11, NAMC1, NAMC4, NAMC11, NAMC14, BPPL1, BPPL2 and
BPPL3.

• Explicit equipment boundary profile definition (EQBD) has been deprecated (refer to

Subclause 4.6.5 of IEC 61970-301:2020 and future Amendment 1 for details on

deprecations) in this edition in favour of using its full profile counterpart (EQ) for exchange

of boundary datasets. The topology boundary profile (TPBD) is not included in the CGMES

as TP is considered output and therefore it is no need to exchange Topology information

part of the boundary model authority set.
• Annex F has been deleted.
The text of this International Standard is based on the following documents:
FDIS Report on voting
57/2366/FDIS 57/2382/RVD

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 International Standard is English.

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/standardsdev/publications.

A list of all parts in the IEC 61970 series, published under the general title Energy management

system application program interface (EMS-API), can be found on the IEC website.
___________
An amendment to IEC 61970-301:2020 is currently under consideration.
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SIST EN IEC 61970-600-1:2021
– 6 – IEC 61970-600-1:2021 © IEC 2021

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://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 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.

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SIST EN IEC 61970-600-1:2021
IEC 61970-600-1:2021 © IEC 2021 – 7 –
INTRODUCTION

The purpose of this document is to define the Common Grid Model Exchange Standard

(CGMES) based on Common Information Model (CIM) standards defined in IEC 61970-series,

IEC 61968-series and IEC 62325-series and to address requirements defined by the European

legislation. However, the document is not limited to the European legislation requirements and

business processes, it is created to support data exchange between applications that support

power system model management and analysis. The data exchange can be between internal

applications or between applications at System Operators (SO) and Reginal Coordination

Centre (RCC). This covers DSO-DSO, DSO-TSO, TSO-TSO, TSO-RCC/ISO/RTO and RCC-
RCC interfaces, but not limited to these.

The CGMES is created to address the information exchange requirements provided in Common

Grid Model methodologies (CGMm) in accordance with the legal requirements stated in various

European network codes guidelines. The CGMES applies to applications dealing with power

system data management, as well as applications supporting the following analyses:

• power flow and contingency analyses,
• short circuit calculations,
• market information and transparency,
• capacity calculation for capacity allocation and congestion management, and
• dynamic security assessment.

The conformity of applications used for system operation and system development data

exchanges with the CGMES is crucial for the needed interoperability of these applications. This

document provides the grouping of all principle requirements for the CGMES Conformity

Assessment Framework and the guiding principles for assessing applications’ CGMES

conformity. The description of the CGMES Conformity Assessment Process is currently not part

of the IEC 61970-600-series, but it is planned to be included as an international standard in

order to validate that the CGMES is correctly implemented by suppliers of the applications used

by system operators (ISO/TSO/DSO etc) and for Regional Coordination Centres (RCCs).

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SIST EN IEC 61970-600-1:2021
– 8 – IEC 61970-600-1:2021 © IEC 2021
ENERGY MANAGEMENT SYSTEM APPLICATION
PROGRAM INTERFACE (EMS-API) –
Part 600-1: Common Grid Model Exchange Standard (CGMES) –
Structure and rules
1 Scope

This part of IEC 61970, which covers the definition of Common Grid Model Exchange Standard

(CGMES), defines the main rules and application’s requirements to meet business requirements

for assembled and merged model to fit relevant business services. This document does not

define the business requirements, business processes nor how applications are implemented.

This document defines how relevant Common Information Model (CIM) standards work together

so that specific business requirements can be resolved.

It also includes extensions to the Common Information Model (CIM). The current extensions are

defined in IEC 61970-301:2020 and will be covered in its future Amendment 1, but additional

extensions can be defined in other standards in the IEC 61970-600-series. The extensions can

be used to define additional profiles or to expand IEC 61970-450-series or IEC 61968-13

profiles. However, primary CGMES includes additional constraints on existing profiles and

validation of assembled and merged models that is based on existing profiles. This can be done

by making optional attributes and associations mandatory (required).

In addition, this document includes the specification of the serialisation that must be supported

by referring to an existing standard defined in IEC 61970-550-series, e.g., IEC 61970-552, and

making relevant constraints related to it.

The goal is to achieve interoperability between applications using CGMES in a high-

performance environment with combined minimum effort so that relevant business processes

are satisfied.

An overview of IEC 61970-600 series is provided in the following table, which also presents

identified needs that are not yet addressed.
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SIST EN IEC 61970-600-1:2021
IEC 61970-600-1:2021 © IEC 2021 – 9 –
Part Description Scope
61970-600-1 Structure and rules. In the scope
This part defines the structure of the series of standard
and the rules that needs to be applied on the assembled
and merged models that are defined by the different profile
standards.
61970-600-2 Exchange profiles specification. In the scope
This part defines the IEC 61970-450-series and
IEC 61968-13 related profiles that are included in CGMES.
It includes the references to published standards and
additional constraints defined to the relevant standard. If
the relevant edition of a standard is not published, it also
includes the profile definition and the standard’s
constraints.
to be defined (TBD) Information extension. Identified as a
need and not yet
This part defines additional information model that is not
addressed neither
included in the relevant edition of IEC 61970-301,
in this document
IEC 61970-302 or IEC 61968-11 that is needed to meet
nor in IEC 61970-
business requirement.
600 series
to be defined (TBD) Extended exchange profiles specification.
This part defines additional profiles that is not included in
IEC 61970-450-series and IEC 61968-13 that is needed to
meet business requirement.
to be defined (TBD) Conformity Assessment Scheme (CAS).
This part defines the Conformity Assessment Scheme
(CAS) including test use cases and references to test
configurations to evaluate if an application tool conforms
to the CGMES.

Clause 4, Data exchange context, describes the context the CGMES is developed to support.

Clause 5, Specifications and functionalities, defines the rules that shall be applied for validating

a model part, an assembled and a merged model. When the rule is defined in the relevant profile

it will include a refence to the rule.

Clause 6, CGMES governance, defines the governance of CGMES and the version strategy.

Annex A is left blank.

Annex B (normative), File header guidelines, explains the usage of the file header that is

defined in IEC 61970-552.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.

IEC 61970-552:2016, Energy management system application program interface (EMS-API) –

Part 552: CIMXML Model exchange format

IEC 61970-301:2020, Energy management system application program interface (EMS-API) –

Part 301: Common information model (CIM) base

IEC 61970-302:2018, Energy management system application program interface (EMS-API) –

Part 302: Common information model (CIM) dynamics
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3 Terms, definitions and abbreviated terms

For the purposes of this document, the following terms, definitions and abbreviated terms apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

NOTE For definitions which are not specified in the CGMES the definitions in the IEC 61970 standard series shall

be applied.
3.1 Terms and definitions
3.1.1
assembled model
model of a Model Authority Set with i
...

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