EN 62747:2014/A1:2019

Terminology for voltage-sourced converters (VSC) for high-voltage direct current (HVDC) systems

This International Standard defines terms for the subject of self-commutated voltage-sourced converters used for transmission of power by high voltage direct current (HVDC). The standard is written mainly for the case of application of insulated gate bipolar transistors (IGBTs) in voltage sourced converters (VSC) but may also be used for guidance in the event that other types of semiconductor devices which can both be turned on and turned off by control action are used. Line-commutated and current-sourced converters for high-voltage direct current (HVDC) power transmission systems are specifically excluded from this standard.

Terminologie für Spannungszwischenkreis-Stromrichter (VSC) für Hochspannungsgleichstrom(HGÜ)-Systeme

Terminologie relative aux convertisseurs de source de tension (VSC) des systèmes en courant continu à haute tension (CCHT)

La présente Norme internationale définit les termes relatifs aux convertisseurs de source de tension autocommutés utilisés pour le transport d’énergie en courant continu à haute tension (CCHT). La norme a été essentiellement élaborée pour l’application des transistors bipolaires à grille isolée (IGBT) des convertisseurs de source de tension (VSC), mais elle peut également être utilisée comme guide en cas d’utilisation d’autres dispositifs à semiconducteur pouvant être activés ou désactivés par une action de commande. Les convertisseurs commutés par le réseau et les convertisseurs à source de courant des systèmes de transport d’énergie en courant continu à haute tension (CCHT) sont exclus de la présente norme.

Terminologija za napetostne pretvornike (VSC) za visokonapetostne enosmerne sisteme

General Information

• Status: Published
• Publication Date: 21-Mar-2019
• Withdrawal Date: 27-Feb-2022
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• ICS: 29.240 - Power transmission and distribution networks
• ICS: 29.240.99 - Other equipment related to power transmission and distribution networks
• Technical Committee: CLC/TC 22X - Power electronics
• Drafting Committee: IEC/SC 22F - IEC_SC_22F
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 22-Mar-2019
• Completion Date: 22-Mar-2019
• Ref Project: SIST EN 62747:2014/A1:2019 - Terminology for voltage-sourced converters (VSC) for high-voltage direct current (HVDC) systems

Relations

• Amends: EN 62747:2014 - Terminology for voltage-sourced converters (VSC) for high-voltage direct current (HVDC) systems
• Effective Date: 13-Jun-2017

Overview

EN 62747:2014/A1:2019 is a European standard developed by CLC that establishes precise terminology for voltage-sourced converters (VSC) used in high-voltage direct current (HVDC) transmission systems. This standard specifically focuses on self-commutated VSC technologies, predominantly utilizing Insulated Gate Bipolar Transistors (IGBTs), which are central to modern HVDC applications. Importantly, it excludes line-commutated and current-sourced converters, honing its scope to voltage-sourced applications. The standard provides essential definitions and symbols that facilitate uniform communication and understanding across industries, ensuring consistency in HVDC converter technology documentation and implementation.

Key Topics

• Voltage-Sourced Converters (VSC): Definitions and terminology focused on the structure and operation of VSCs, including the configuration and control of power electronic devices.

• IGBT-based Converters: The standard concentrates on VSCs that employ IGBTs, reflecting current industry practice for controllable, self-commutated semiconductor devices that can be switched on and off via control.

• Terms for Converter Components: Clarifies key components such as converter arms, valves, and converter units, with updated definitions and symbols to standardize communication.

• Converter Operating States: Defines operational conditions like the "blocked state" where all IGBTs received a continuous turn-off signal, crucial for understanding converter control strategies.

• HVDC System Configurations: Includes terminology for asymmetrical monopolar HVDC systems, detailing configurations that have one earthed DC terminal and asymmetrical voltage distribution.

• Substation Equipment: Defines key equipment terms such as metallic return transfer switches (MRTS) and earth return transfer switches (ERTS), which are vital for HVDC protection and transfer operations.

• Letter Symbols and Subscripts: Provides normalized letter symbols for voltages and currents (e.g., U_ce, I_c) and subscripts (e.g., c for converter side, v for valve), assisting in consistent circuit notation.

Applications

• HVDC Power Transmission: The standard supports the design, engineering, and operation of HVDC transmission systems employing voltage-sourced converters, critical for efficient long-distance electric power transfer.

• Power Electronics Engineering: Serves as a key reference for engineers integrating IGBT-based VSCs in electrical grid infrastructure, enhancing clarity in system specifications and documentation.

• Standardization and Compliance: Enables electrical utilities, manufacturers, system operators, and regulators to use consistent terminology, facilitating interoperability, training, and regulatory compliance.

• Technical Documentation: Useful for creating unambiguous technical manuals, instructional materials, and product data sheets related to VSC HVDC equipment.

Related Standards

• IEC 60633: Terminology for high-voltage direct current (HVDC) transmission systems, referenced for specialized equipment terms primarily related to line-commutated HVDC schemes.

• IEC 62751-1 & 62751-2: Standards covering power losses in VSC valves for HVDC systems, providing complementary technical requirements and analysis methods.

• IEC 60747 Series: Documents semiconductor device definitions, which underpin the basic technologies applied within VSC valves.

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By adopting EN 62747:2014/A1:2019, stakeholders in HVDC technology ensure uniform understanding of voltage-sourced converter terminologies, promoting reliable engineering practices and advancing high-voltage DC power transmission innovations.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2019
Terminologija za napetostne pretvornike (VSC) za visokonapetostne enosmerne
sisteme
Terminology for voltage-sourced converters (VSC) for high-voltage direct current (HVDC)
systems
Terminologie für Spannungszwischenkreis-Stromrichter (VSC) für
Hochspannungsgleichstrom(HGÜ)-Systeme
Terminologie relative aux convertisseurs de source de tension (VSC) des systèmes en
courant continu à haute tension (CCHT)
Ta slovenski standard je istoveten z: EN 62747:2014/A1:2019
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 62747:2014/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 29.200; 29.240.99
English Version
Terminology for voltage-sourced converters (VSC) for high-
voltage direct current (HVDC) systems
(IEC 62747:2014/A1:2019)
Terminologie relative aux convertisseurs de source de Terminologie für Spannungszwischenkreis-Stromrichter
tension (VSC) des systèmes en courant continu à haute (VSC) für Hochspannungsgleichstrom(HGÜ)-Systeme
tension (CCHT) (IEC 62747:2014/A1:2019)
(IEC 62747:2014/A1:2019)
This amendment A1 modifies the European Standard EN 62747:2014; it was approved by CENELEC on 2019-02-28. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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 62747:2014/A1:2019 E

European foreword
The text of document 22F/481/CDV, future IEC 62747/A1, 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
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-11-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-02-28
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.

Endorsement notice
The text of the International Standard IEC 62747:2014/A1:2019 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:
Delete the following reference:
IEC 60633 NOTE Harmonized as EN 60633
Update the following references:
IEC 62751-1 NOTE Harmonized as EN 62751-1
IEC 62751-2 NOTE Harmonized as EN 62751-2

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.
Add the following reference:
Publication Year Title EN/HD Year
IEC 60633 -  Terminology for high-voltage direct current EN 60633 -
(HVDC) transmission
IEC 62747 ®
Edition 1.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Terminology for voltage-sourced converters (VSC) for high-voltage direct

current (HVDC) systems
Terminologie relative aux convertisseurs de source de tension (VSC) des

systèmes en courant continu à haute tension (CCHT)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200; 29.240.99 ISBN 978-2-8322-6426-3

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