EN IEC 60071-11:2022
(Main)Insulation co-ordination - Part 11：Definitions, principles and rules for HVDC system
Insulation co-ordination - Part 11：Definitions, principles and rules for HVDC system
IEC 60071-11:2022 applies to high-voltage direct current (HVDC) systems. It specifies the principles on the procedures for the determination of the specified withstand voltages, creepage distance and air clearances for the equipment and the installations of these systems. This document gives the insulation co-ordination principles related to line commutated converter (LCC) and voltage sourced converters (VSC) HVDC systems. The main principles of this document also apply to other special converter configurations of LCC, such as the capacitor commutated converter (CCC) as well as the controlled series compensated converter (CSCC), etc. This document applies to insulation co-ordination of equipment connected between the converter AC bus (including the AC harmonic filters, the converter transformer, the circuit breakers) and the DC line side. The line and cable terminations in so far as they influence the insulation co-ordination of converter station equipment are also covered. This document applies only for HVDC applications in power systems and not for industrial conversion equipment. Principles and guidance given are for insulation co-ordination purposes only. The requirements for human safety are not covered by this document. This international standard replaces, in conjunction with IEC 60071-12, IEC 60071-5 published in 2014. This edition includes the following significant technical changes with respect to IEC 60071‑5:2014:
This standard applies to both LCC and VSC HVDC systems whereas IEC 60071-5 only dealt with LCC HVDC system;
Annex C (normative) gives the recommended specified withstand voltage (LI and SI);
Annex C (normative) gives the minimum air clearances;
Annex E shows the correlation of clauses between this standard and IEC 60071-5:2014.
Isolationskoordination - Teil 11: Begriffe, Grundsätze und Anforderungen für HGÜ-Systeme
Coordination de l'isolement - Partie 11: Définitions, principes et règles relatifs au réseau CCHT
L'IEC 60071-11:2022 s'applique aux réseaux à courant continu à haute tension (CCHT). Elle spécifie les principes relatifs aux procédures de détermination des tensions de tenue spécifiées, de la ligne de fuite et des distances d'isolement dans l'air pour l'équipement et l'installation de ces réseaux. Le présent document donne les principes de coordination de l'isolement relatifs aux réseaux CCHT qui comportent des convertisseurs commutés par le réseau (LCC) et des convertisseurs à source de tension (VSC). Les principes fondamentaux du présent document s'appliquent également à d'autres configurations spécifiques de LCC, comme le convertisseur à condensateur commuté (CCC), le convertisseur à condensateurs en série contrôlés (CCSC), etc. Le présent document s'applique à la coordination de l'isolement du matériel raccordé entre la barre à courant alternatif du convertisseur (y compris les filtres d'harmoniques côté courant alternatif, le transformateur convertisseur, les disjoncteurs) et le côté courant continu. Il traite également des terminaisons de lignes et de câbles, en raison de leur incidence sur la coordination de l'isolement du matériel des postes de conversion. Le présent document ne s'applique qu'aux applications CCHT dans les réseaux d'alimentation, et non au matériel de conversion à usage industriel. Les principes et les recommandations ne sont fournis que dans le cadre de la coordination de l'isolement. Les exigences relatives à la sécurité des personnes ne sont pas traitées dans le présent document. Cette Norme internationale remplace, conjointement avec l'IEC 60071-12, l'IEC 60071-5 parue en 2014. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'IEC 60071‑5:2014:
la présente norme s'applique aux réseaux CCHT LCC et VSC, tandis que l'IEC 60071-5 concernait uniquement le réseau CCHT LCC;
l'Annexe C (normative) fournit la tension de tenue spécifiée recommandée (LI et SI);
l'Annexe C (normative) fournit les distances minimales d'isolement dans l'air;
l'Annexe E indique la correspondance entre les articles/paragraphes de la présente norme et ceux de l'IEC 60071-5:2014.
Koordinacija izolacije - 11. del: Definicije, načela in pravila za visokonapetostni enosmerni (HVDC) sistem
Standard IEC 60071-11:2022 se uporablja za visokonapetostne enosmerne (HVDC) sisteme. Določa načela o postopkih za zagotavljanje navedenih vzdržnih napetosti, plazilnih razdalj in zračnih razdalj za opremo in inštalacije teh sistemov.
Ta dokument podaja načela za koordinacijo izolacije v zvezi z vodovno komutiranimi pretvorniki (LCC) in napetostnimi pretvorniki (VSC) visokonapetostnih enosmernih sistemov. Glavna načela tega dokumenta veljajo tudi za druge posebne konfiguracije vodovno komutiranih pretvornikov, kot sta kondezatorsko komutiran pretvornik (CCC) in krmiljen serijsko kompenziran pretvornik (CSCC) itd.
Ta dokument se uporablja za koordinacijo izolacije opreme, ki je povezana med vozlišče izmeničnega toka pretvornika (vključno s harmoničnimi filtri izmeničnega toka, pretvornikom-transformatorjem, odklopnikom) in stranjo voda z enosmernim tokom. Zajeti so tudi zaključki vodov in kablov, če vplivajo na koordinacijo izolacije opreme pretvorniške postaje.
Ta dokument se uporablja samo za uporabe visokonapetostnih enosmernih sistemov v napajalnih sistemih in ne za industrijsko pretvorno opremo. Podana načela in smernice so namenjeni samo koordinaciji izolacije. Zahteve za varnost ljudi niso obravnavane v tem dokumentu.
Ta mednarodni standard skupaj s standardom IEC 60071-12 nadomešča standard IEC 60071-5, objavljen leta 2014.
Ta izdaja vključuje naslednje pomembne tehnične spremembe glede na standard IEC 60071-5:2014:
Ta standard se uporablja za visokonapetostne enosmerne sisteme z vodovno komutiranimi pretvorniki in napetostnimi pretvorniki, medtem ko je standard IEC 60071-5 obravnaval samo visokonapetostne enosmerne sisteme z vodovno komutiranimi pretvorniki;
– Dodatek C (normativni) podaja priporočene specifične zdržne napetosti;
– Dodatek C (normativni) podaja minimalne zračne razdalje;
– Dodatek E prikazuje korelacijo med tem standardom in standardom IEC 60071-5:2014.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2023
Nadomešča:
SIST EN 60071-5:2015
Koordinacija izolacije - 11. del: Definicije, načela in pravila za visokonapetostni
enosmerni (HVDC) sistem
Insulation co-ordination - Part 11：Definitions, principles and rules for HVDC system
Isolationskoordination - Teil 11: Begriffe, Grundsätze und Anforderungen für HVDC
Systeme
Coordination de l'isolement - Partie 11: Définitions, principes et règles relatifs au réseau
CCHT
Ta slovenski standard je istoveten z: EN IEC 60071-11:2022
ICS:
29.080.01 Električna izolacija na Electrical insulation in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60071-11
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2022
ICS 29.080.30 Supersedes EN 60071-5:2015 (partially)
English Version
Insulation co-ordination - Part 11:Definitions, principles and rules
for HVDC system
(IEC 60071-11:2022)
Coordination de l'isolement - Partie 11: Définitions, Isolationskoordination - Teil 11: Begriffe, Grundsätze und
principes et règles relatifs au réseau CCHT Anforderungen für HVDC Systeme
(IEC 60071-11:2022) (IEC 60071-11:2022)
This European Standard was approved by CENELEC on 2022-12-13. 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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60071-11:2022 E
European foreword
The text of document 99/374/FDIS, future edition 1 of IEC 60071-11, prepared by IEC/TC 99
"Insulation co-ordination and system engineering of high voltage electrical power installations above
1,0 kV AC and 1,5 kV DC" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60071-11:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-09-13
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-12-13
document have to be withdrawn
This document, in conjunction with EN IEC 60071-12:2022, supersedes (partially) EN 60071-5:2015
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 60071-11:2022 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 60071-5:2014 NOTE Harmonized as EN 60071-5:2015 (not modified)
IEC 60700-1:2015 NOTE Harmonized as EN 60700-1:2015 (not modified)
IEC 60633 NOTE Harmonized as EN IEC 60633
IEC 60099-5:2018 NOTE Harmonized as EN IEC 60099-5:2018 (not modified)
IEC 60505:2011 NOTE Harmonized as EN 60505:2011 (not modified)
IEC 60721-3-0:2020 NOTE Harmonized as EN IEC 60721-3-0:2020 (not modified)
IEC/TR 60919-2:2008 NOTE Harmonized as CLC/TR 60919-2:2010 (not modified)
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 60060-1 - High-voltage test techniques - Part 1: EN 60060-1 -
General definitions and test
requirements
IEC 60071-1 2019 Insulation co-ordination - Part 1: EN IEC 60071-1 2019
Definitions, principles and rules
IEC 60071-2 2018 Insulation co-ordination - Part 2: EN IEC 60071-2 2018
Application guidelines
IEC 60099-4 2014 Surge arresters - Part 4: Metal-oxide EN 60099-4 2014
surge arresters without gaps for a.c.
systems
IEC/TS 60815-1 2008 Selection and dimensioning of high- - -
voltage insulators intended for use in
polluted conditions - Part 1: Definitions,
information and general principles
IEC/TS 60815-2 2008 Selection and dimensioning of high- - -
voltage insulators intended for use in
polluted conditions - Part 2: Ceramic and
glass insulators for a.c. systems
IEC/TS 60815-3 2008 Selection and dimensioning of high- - -
voltage insulators intended for use in
polluted conditions - Part 3: Polymer
insulators for a.c. systems
IEC 60071-11 ®
Edition 1.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulation co-ordination –
Part 11: Definitions, principles and rules for HVDC system
Coordination de l'isolement –
Partie 11: Définitions, principes et règles relatifs au réseau CCHT
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.080.30 ISBN 978-2-8322-6026-5
– 2 – IEC 60071-11:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Symbols and abbreviations . 13
4.1 General . 13
4.2 Subscripts . 14
4.3 Letter symbols . 14
4.4 Abbreviations . 15
5 Principles of insulation co-ordination . 15
5.1 General . 15
5.2 Essential differences between AC and DC systems . 15
5.3 Insulation co-ordination procedure . 16
5.4 Differences of withstand voltage selection in AC and DC systems . 16
6 Design procedure of insulation co-ordination . 18
6.1 General . 18
6.2 Arrester characteristics . 18
6.3 Insulation characteristics . 18
6.4 Determination of the representative overvoltages (U ) . 18
rp
6.5 Determination of the co-ordination withstand voltages (U ) . 19
cw
6.6 Determination of the required withstand voltages (U ) . 19
rw
6.7 Determination of the specified withstand voltage (U ) . 21
w
7 Requirements for withstand voltage tests. 21
8 Creepage distances . 21
8.1 General . 21
8.2 Base voltage for creepage distance . 22
8.3 Creepage distance for outdoor insulation under DC voltage . 22
8.4 Creepage distance for indoor insulation under DC or mixed voltage . 22
8.5 Creepage distance of AC insulators . 22
9 Clearances in air . 23
Annex A (informative) Typical HVDC converter station schemes . 24
Annex B (informative) Example of air clearances calculation . 28
B.1 Introductory remarks . 28
B.2 Calculated minimum air clearance for switching impulse stress . 28
B.2.1 General . 28
B.2.2 Example calculation . 29
B.3 Calculated minimum air clearance for lightning impulse stress . 29
B.3.1 General . 29
B.3.2 Example calculation . 30
Annex C (normative) Example of typical DC voltages with possible insulation levels
and corresponding air clearances . 31
C.1 Introductory remarks . 31
C.2 List of typical DC voltagesand possible insulation levels . 31
IEC 60071-11:2022 © IEC 2022 – 3 –
C.3 Example of presumed switching impulse insulation levels and minimum air
clearances . 31
C.4 Example of presumed lightning impulse insulation levels and minimum air
clearances . 33
C.5 Possible/Presumed specified DC withstand voltages . 33
C.5.1 General . 33
C.5.2 Specified DC withstand voltages . 34
C.5.3 List of specified power frequency withstand voltages . 34
Annex D (informative) Typical arrester characteristics . 35
Annex E (informative) The Correlation of clauses between IEC 60071-11 and
IEC 60071-5:2014 . 36
Bibliography . 37
Figure 1 – Comparison of the selection between withstand voltages for AC equipment
and for HVDC converter station equipment . 17
Figure A.1 – Possible arrester locations in one pole of bipole LCC converter station
with 12-pulse converters in series .
...
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