EN IEC 60633:2019

SLOVENSKI STANDARD
01-januar-2020
Nadomešča:
SIST EN 60633:2001
SIST EN 60633:2001/A1:2010
SIST EN 60633:2001/A2:2015
Visokonapetostni enosmerni prenos (HVDC) - Slovar (IEC 60633:2019)
High-voltage direct current (HVDC) transmission - Vocabulary (IEC 60633:2019)
High-voltage direct current (HVDC) transmission - Vocabulary (IEC 60633:2019)
Transport d'énergie en courant continu à haute tension (CCHT) - Vocabulaire (IEC
60633:2019)
Ta slovenski standard je istoveten z: EN IEC 60633:2019
ICS:
01.040.29 Elektrotehnika (Slovarji) Electrical engineering
(Vocabularies)
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60633

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2019
ICS 29.200 Supersedes EN 60633:1999
English Version
High-voltage direct current (HVDC) transmission - Vocabulary
(IEC 60633:2019)
Transport d'énergie en courant continu à haute tension Hochspannungsgleichstrom-Übertragung (HGÜ) - Begriffe
(CCHT) - Vocabulaire (IEC 60633:2019)
(IEC 60633:2019)
This European Standard was approved by CENELEC on 2019-05-30. 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60633:2019 E
European foreword
The text of document 22F/480/CDV, future edition 3 of IEC 60633, prepared by SC 22F "Power
electronics for electrical transmission and distribution systems" of IEC/TC 22 "Power electronic
systems and equipment" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60633:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-02-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-30
document have to be withdrawn
This document supersedes EN 60633:1999.
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.

Endorsement notice
The text of the International Standard IEC 60633:2019 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 60027 (series) NOTE Harmonized as EN 60027 (series)
IEC 60076 (series) NOTE Harmonized as EN 60076 (series)
IEC 60099 (series) NOTE Harmonized as EN 60099 (series)
IEC 60146-1-1 NOTE Harmonized as EN 60146-1-1
IEC 60146-1-3:1991 NOTE Harmonized as EN 60146-1-3:1993 (not modified)
IEC 60700-2 NOTE Harmonized as EN 60700-2
IEC/TR 60919-2:2008 NOTE Harmonized as CLC/TR 60919-2:2010 (not modified)

IEC 60633 ®
Edition 3.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage direct current (HVDC) transmission – Vocabulary

Transport d'énergie en courant continu à haute tension (CCHT) – Vocabulaire

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200 ISBN 978-2-8322-6812-4

– 2 – IEC 60633:2019 © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Symbols and abbreviated terms . 5
3.1 Letter symbols . 5
3.2 Subscripts . 6
3.3 Abbreviated terms . 6
4 Graphical symbols . 6
5 General terms related to converter circuits . 6
6 Converter units and valves . 9
7 Converter operating conditions . 12
8 HVDC systems and substations . 15
9 HVDC substation equipment . 19
10 Modes of control . 23
11 Control systems . 23
12 Control functions . 26
Bibliography . 37

Figure 1 – Graphical symbols . 27
Figure 2 – Bridge converter connection . 27
Figure 3 – Example of a converter unit . 28
Figure 4 – Commutation process at rectifier and inverter modes of operation . 29
Figure 5 – Illustrations of commutation in inverter operation . 30
Figure 6 – Typical valve voltage waveforms . 31
Figure 7 – Example of an HVDC substation . 32
Figure 8 – Example of bipolar two-terminal HVDC transmission system . 33
Figure 9 – Example of a multiterminal bipolar HVDC transmission system with parallel
connected HVDC substations . 33
Figure 10 – Example of a multiterminal HVDC transmission system with series
connected HVDC substations . 34
Figure 11 – Simplified steady-state voltage-current characteristic of a two-terminal
HVDC system . 34
Figure 12 – Hierarchical structure of an HVDC control system . 35
Figure 13 – Capacitor commutated converter configurations . 36

IEC 60633:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE DIRECT CURRENT
(HVDC) TRANSMISSION – VOCABULARY

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
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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.
International Standard IEC 60633 has been prepared by subcommittee 22F: Power electronics
for electrical transmission and distribution systems, of IEC technical committee 22: Power
electronic systems and equipment.
This third edition cancels and replaces the second edition published in 1998,
Amendment 1:2009 and Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) 40 terms and definitions have been amended and 31 new terms and definitions have been
added mainly on converter units and valves, converter operating conditions, HVDC
systems and substations and HVDC substation equipment;
b) a new Figure 13 on capacitor commutated converter configurations has been added.

– 4 – IEC 60633:2019 © IEC 2019
The text of this International Standard is based on the following documents:
CDV Report on voting
22F/480/CDV 22F/491A/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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.
IEC 60633:2019 © IEC 2019 – 5 –
HIGH-VOLTAGE DIRECT CURRENT
(HVDC) TRANSMISSION – VOCABULARY

1 Scope
This document defines terms for high-voltage direct current (HVDC) power transmission
...