Electrical energy storage (EES) systems - Part 1: Vocabulary (IEC 62933-1:2024)

IEC 62933-1:2024 defines terms applicable to electrical energy storage (EES) systems including terms necessary for the definition of unit parameters, test methods, planning, installation, operation, environmental and safety issues.
This terminology document is applicable to grid-connected systems able to extract electrical energy from an electric power system, store energy internally, and provide electrical energy to an electric power system. The step for charging and discharging an EES system can comprise an energy conversion.
This second edition cancels and replaces the first edition published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition (with revision) of the entries developed during the edition 1 stability period and, therefore, included only in other IEC 62933 parts;
b) addition of the entries developed during the edition 1 stability period and published in this document for the first time;
c) complete revision of the entries already present in edition 1.

Elektrische Energiespeichersysteme (EES-Systeme) - Teil 1: Terminologie (IEC 62933-1:2024)

Systèmes de stockage de l'énergie électrique (EES) - Partie 1: Vocabulaire (IEC 62933-1:2024)

L’IEC 62933-1:2024 définit les termes applicables aux systèmes de stockage de l’énergie électrique (EES - electrical energy storage), y compris les termes nécessaires à la définition des paramètres unitaires, des méthodes d’essai, de la planification, de l’installation, du fonctionnement et des problèmes environnementaux et de sécurité.
Le présent document terminologique est applicable aux systèmes connectés au réseau capables d’extraire l’énergie électrique d’un réseau d’alimentation électrique, de stocker l’énergie en interne et de fournir de l’énergie électrique à un réseau d’alimentation électrique. La phase de charge et de décharge d’un système EES peut inclure une conversion d’énergie.
Cette seconde édition annule et remplace la première édition parue en 2018. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout (avec révision) des articles élaborés pendant la période de stabilité de l’édition 1 et, par conséquent, inclus seulement dans d’autres parties de l’IEC 62933;
b) ajout des articles élaborés pendant la période de stabilité de l’édition 1 et publiés dans le présent document pour la première fois;
c) révision complète des articles déjà présents dans l’édition 1.

Električne naprave za shranjevanje energije (EES) - 1. del: Slovar (IEC 62933-1:2024)

V standardu IEC 62933-1:2024 so opredeljeni izrazi, ki se uporabljajo za električne naprave za shranjevanje energije (EES), vključno z izrazi, potrebnimi za opredelitev parametrov enote, preskusnih metod, načrtovanja, namestitve, delovanja ter okoljskih in varnostnih vidikov.
Ta terminološki dokument se uporablja za sisteme z omrežnim napajanjem, ki lahko pridobivajo električno energijo iz sistema električnega napajanja, jo shranjujejo v notranjosti in dovajajo sistemu električnega napajanja. Polnjenje in praznjenje električne naprave za shranjevanje energije lahko vključuje tudi pretvorbo energije.
Druga izdaja razveljavlja in nadomešča prvo izdajo, objavljeno leta 2018. Ta izdaja je tehnično popravljena izdaja.
Ta izdaja v primerjavi s prejšnjo vključuje naslednje pomembne tehnične spremembe:
a) dodani (in pregledani) so bili vnosi, ustvarjeni v obdobju stabilnosti prve izdaje in vključeni le v drugih delih standarda IEC 62933;
b) dodani so bili vnosi, ustvarjeni v obdobju stabilnosti prve izdaje, ki so v tem dokumentu prvič objavljeni;
c) vnosi, ki so že bili objavljeni v prvi izdaji, so bili v celoti pregledani.

General Information

Status
Published
Public Enquiry End Date
12-Oct-2023
Publication Date
02-Jul-2024
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jul-2024
Due Date
05-Sep-2024
Completion Date
03-Jul-2024

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SLOVENSKI STANDARD
01-september-2024
Električne naprave za shranjevanje energije (EES) - 1. del: Slovar (IEC 62933-
1:2024)
Electrical energy storage (EES) systems - Part 1: Vocabulary (IEC 62933-1:2024)
Elektrische Energiespeichersysteme (EES-Systeme) - Teil 1: Terminologie (IEC 62933-
1:2024)
Systèmes de stockage de l'énergie électrique (EES) - Partie 1: Vocabulaire (IEC 62933-
1:2024)
Ta slovenski standard je istoveten z: EN IEC 62933-1:2024
ICS:
01.040.27 Prenos energije in toplote Energy and heat transfer
(Slovarji) engineering (Vocabularies)
27.010 Prenos energije in toplote na Energy and heat transfer
splošno engineering in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62933-1

NORME EUROPÉENNE
EUROPÄISCHE NORM June 2024
ICS 01.040.17 Supersedes EN IEC 62933-1:2018
English Version
Electrical energy storage (EES) systems - Part 1: Vocabulary
(IEC 62933-1:2024)
Systèmes de stockage de l'énergie électrique (EES) - Partie Elektrische Energiespeichersysteme (EES-Systeme) - Teil
1 : Vocabulaire 1: Terminologie
(IEC 62933-1:2024) (IEC 62933-1:2024)
This European Standard was approved by CENELEC on 2024-06-19. 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,
Türkiye 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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62933-1:2024 E

European foreword
The text of document 120/358/FDIS, future edition 2 of IEC 62933-1, prepared by IEC/TC 120
"Electrical Energy Storage (EES) systems" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62933-1:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-03-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-06-19
document have to be withdrawn
This document supersedes EN IEC 62933-1:2018 and all of its amendments and corrigenda (if any).
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 62933-1:2024 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 standard indicated:
IEC 60027 series NOTE Approved as EN 60027 series
IEC 61165:2006 NOTE Approved as EN 61165:2006 (not modified)
IEC 61427-2:2015 NOTE Approved as EN 61427-2:2015 (not modified)
IEC 61850-4:2011 NOTE Approved as EN 61850-4:2011 (not modified)
IEC 61850-4:2011/A1:2020 NOTE Approved as EN 61850-4:2011/A1:2020 (not modified)
IEC 61987-1:2006 NOTE Approved as EN 61987-1:2007 (not modified)
IEC 62381:2012 NOTE Approved as EN 62381:2012 (not modified)
IEC 62443-3-3:2013 NOTE Approved as EN IEC 62443-3-3:2019 (not modified)
IEC 62477-1:2012 NOTE Approved as EN 62477-1:2012 (not modified) +A11:2014
IEC 62668-1:2019 NOTE Approved as EN IEC 62668-1:2019 (not modified)
IEC 62680 series NOTE Approved as EN IEC 62680 series
IEC 62928:2017 NOTE Approved as EN IEC 62928:2018 (not modified)
IEC 62932-1:2020 NOTE Approved as EN IEC 62932-1:2020 (not modified)
IEC 62934:2021 NOTE Approved as EN IEC 62934:2021 (not modified)
ISO 14050:2020 NOTE Approved as EN ISO 14050:2020 (not modified)

IEC 62933-1 ®
Edition 2.0 2024-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical energy storage (EES) systems –

Part 1: Vocabulary
Systèmes de stockage de l'énergie électrique (EES) –

Partie 1 : Vocabulaire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 01.040.17  ISBN 978-2-8322-8797-2

– 2 – IEC 62933-1:2024 © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions for EES systems classification . 6
3.1 Fundamental concepts for EES systems classification . 6
3.2 EES systems classification . 7
3.3 EES systems long-duration application . 9
3.4 EES systems short-duration application . 10
3.5 EES systems hybrid and emergency application . 12
4 Terms and definitions for EES systems specification . 12
4.1 Fundamental concepts for EES systems specification . 12
4.2 EES system duty cycles . 15
4.3 EES system primary POC . 17
4.4 EES system auxiliary POC . 24
4.5 EES system service life . 25
4.6 EES system energy efficiency . 27
4.7 EES system step response performances . 29
5 Terms and definitions for EES systems planning and installation . 32
5.1 Fundamental concepts for EES systems planning and installation . 32
5.2 EES system primary subsystem . 33
5.3 EES system auxiliary subsystem . 34
5.4 EES system control subsystem . 35
6 Terms and definitions for EES systems operation . 36
6.1 EES system operating state . 36
6.2 EES system operating signals . 37
6.3 EES system operating procedure . 40
6.4 EES system operating mode . 40
7 Terms and definitions for EES systems' environmental and safety issues . 41
7.1 EES system environmental issues . 41
7.2 EES system safety . 42
Annex A (informative) Index . 45
A.1 Terms index . 45
A.2 Abbreviated terms index . 45
Bibliography . 51

Figure 1 – Illustrative example of EES system energy storage capacities relation . 14
Figure 2 – Illustrative example of EES system charging-discharging cycle . 16
Figure 3 – Illustrative example of EES system power capability chart . 17
Figure 4 – Illustrative example of EES system response performances . 30
Figure 5 – EES system architecture with one POC type . 33
Figure 6 – EES system architecture with two POC types . 34
Figure 7 – Illustrative example of EES system available energies relation . 38

Table 1 – Illustrative example of EES system efficiency chart . 27

IEC 62933-1:2024 © IEC 2024 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL ENERGY STORAGE (EES) SYSTEMS –

Part 1: Vocabulary
FOREWORD
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