Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 2: Modular multilevel converters

This part of IEC 62751 gives the detailed method to be adopted for calculating the power
losses in the valves for an HVDC system based on the “modular multi-level converter”, where
each valve in the converter consists of a number of self-contained, two-terminal controllable
voltage sources connected in series. It is applicable both for the cases where each modular
cell uses only a single turn-off semiconductor device in each switch position, and the case
where each switch position consists of a number of turn-off semiconductor devices in series
(topology also referred to as “cascaded two-level converter”). The main formulae are given for
the two-level “half-bridge” configuration but guidance is also given in Annex A as to how to
extend the results to certain other types of MMC building block configuration.
The standard is written mainly for insulated gate bipolar transistors (IGBTs) but may also be
used for guidance in the event that other types of turn-off semiconductor devices are used.
Power losses in other items of equipment in the HVDC station, apart from the converter
valves, are excluded from the scope of this standard.
This standard does not apply to converter valves for line-commutated converter HVDC
systems.

Bestimmung der Leistungsverluste in Spannungszwischenkreis-Stromrichtern (VSC) für Hochspannungsgleichstrom(HGÜ)-Systeme - Teil 2: Modulare Mehrpunkt-Stromrichter

Pertes de puissance dans les valves à convertisseur de source de tension (VSC) des systèmes en courant continu à haute tension (CCHT) - Partie 2: Convertisseurs multiniveaux modulaires

Ugotavljanje izgub moči v napetostnih pretvorniških ventilih za visokonapetostne enosmerne sisteme - 2. del: Modularni večnivojski pretvorniki (IEC 62751-2:2014/A1:2019)

Ta del standarda IEC 62751 podaja podrobno metodo, ki naj bi se sprejela za izračun izgub moči v ventilih za sistem HVDC na osnovi »modularnega večnivojskega pretvornika«, pri katerem je vsak ventil v pretvorniku sestavljen iz številnih zaporedno vezanih samostojnih, krmiljenih napetostnih virov z dvema priključkoma. Uporablja se v primerih, kjer je posamezna modularna celica uporablja samo eno izklopno polprevodniško napravo pri vsakem stikalnem položaju, in v primerih, kjer posamezni stikalni položaj vsebuje več zaporedno vezanih izklopnih polprevodniških naprav (topologija: imenovan tudi »kaskadni dvonivojski pretvornik«). Glavne formule so podane za dvonivojsko »pol mostično« konfiguracijo, vendar so v dodatku A podane tudi smernice, kako rezultate razširiti na določene druge vrste konfiguracije gradnikov MMC. Standard je zapisan zlasti za bipolarne tranzistorje z izoliranimi vrati (IGBT), vendar se lahko uporablja tudi za navodila v primeru, da se uporabljajo druge vrste izklopnih polprevodniškh naprav. Izgube moči v drugih elementih opreme v napravi HVDC, razen pretvorniških ventilov, so izključene iz področja uporabe tega standarda. Ta standard se ne uporablja za pretvorniške ventile za sisteme HVDC s pretvorniki z linijsko komutacijo.

General Information

Status
Published
Publication Date
24-Oct-2019
Withdrawal Date
26-Sep-2022
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available - Publishing
Start Date
25-Oct-2019
Completion Date
25-Oct-2019

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62751-2:2014/A1:2020
01-januar-2020
Ugotavljanje izgub moči v napetostnih pretvorniških ventilih za visokonapetostne
enosmerne sisteme - 2. del: Modularni večnivojski pretvorniki (IEC 62751-
2:2014/A1:2019)
Power losses in voltage sourced converter (VSC) valves for high-voltage direct current
(HVDC) systems - Part 2: Modular multilevel converters (IEC 62751-2:2014/A1:2019)
Bestimmung der Leistungsverluste in Spannungszwischenkreis-Stromrichtern (VSC) für
Hochspannungsgleichstrom(HGÜ)-Systeme - Teil 2: Modulare Mehrpunkt-Stromrichter
(IEC 62751-2:2014/A1:2019)
Pertes de puissance dans les valves à convertisseur de source de tension (VSC) des
systèmes en courant continu à haute tension (CCHT) - Partie 2: Convertisseurs
multiniveaux modulaires (IEC 62751-2:2014/A1:2019)
Ta slovenski standard je istoveten z: EN 62751-2:2014/A1:2019
ICS:
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
29.240.01 Omrežja za prenos in Power transmission and
distribucijo električne energije distribution networks in
na splošno general
SIST EN 62751-2:2014/A1:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 62751-2:2014/A1:2020

---------------------- Page: 2 ----------------------
SIST EN 62751-2:2014/A1:2020


EUROPEAN STANDARD EN 62751-2:2014/A1

NORME EUROPÉENNE

EUROPÄISCHE NORM
October 2019
ICS 29.200; 29.240

English Version
Power losses in voltage sourced converter (VSC) valves for
high-voltage direct current (HVDC) systems - Part 2: Modular
multilevel converters
(IEC 62751-2:2014/A1:2019)
Pertes de puissance dans les valves à convertisseur de Bestimmung der Leistungsverluste in
source de tension (VSC) des systèmes en courant continu Spannungszwischenkreis-Stromrichtern (VSC) für
à haute tension (CCHT) - Partie 2: Convertisseurs Hochspannungsgleichstrom(HGÜ)-Systeme - Teil 2:
multiniveaux modulaires Modulare Mehrpunkt-Stromrichter
(IEC 62751-2:2014/A1:2019) (IEC 62751-2:2014/A1:2019)
This amendment A1 modifies the European Standard EN 62751-2:2014; it was approved by CENELEC on 2019-09-27. 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, 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 62751-2:2014/A1:2019 E

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SIST EN 62751-2:2014/A1:2020
EN 62751-2:2014/A1:2019 (E)
European foreword
The text of document 22F/479/CDV, future IEC 62751-2/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
EN 62751-2:2014/A1:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-06-27
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-09-27
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 62751-2:2014/A1:2019 was approved by CENELEC as a
European Standard without any modification.


2

---------------------- Page: 4 ----------------------
SIST EN 62751-2:2014/A1:2020
EN 62751-2:2014/A1:2019
...

SLOVENSKI STANDARD
SIST EN 62751-2:2014/oprA1:2018
01-april-2018
8JRWDYOMDQMHL]JXEPRþLYQDSHWRVWQLKSUHWYRUQLãNLKYHQWLOLK]DYLVRNRQDSHWRVWQH
HQRVPHUQHVLVWHPHGHO0RGXODUQLYHþQLYRMVNLSUHWYRUQLNL
Power losses in voltage sourced converter (VSC) valves for high-voltage direct current
(HVDC) systems - Part 2: Modular multilevel converters
Bestimmung der Leistungsverluste in Spannungszwischenkreis-Stromrichtern (VSC) für
Hochspannungsgleichstrom(HGÜ)-Systeme - Teil 2: Modulare Mehrpunkt-Stromrichter
Pertes de puissance dans les valves à convertisseur de source de tension (VSC) des
systèmes en courant continu à haute tension (CCHT) - Partie 2: Convertisseurs
multiniveaux modulaires
Ta slovenski standard je istoveten z: EN 62751-2:2014/prA1:2018
ICS:
29.200 8VPHUQLNL3UHWYRUQLNL Rectifiers. Convertors.
6WDELOL]LUDQRHOHNWULþQR Stabilized power supply
QDSDMDQMH
29.240.01 2PUHåMD]DSUHQRVLQ Power transmission and
GLVWULEXFLMRHOHNWULþQHHQHUJLMH distribution networks in
QDVSORãQR general
SIST EN 62751-2:2014/oprA1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 62751-2:2014/oprA1:2018

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SIST EN 62751-2:2014/oprA1:2018
22F/479/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62751-2/AMD1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2018-02-02 2018-04-27
SUPERSEDES DOCUMENTS:
22F/454/CD,22F/462/CC

IEC SC 22F : POWER ELECTRONICS FOR ELECTRICAL TRANSMISSION AND DISTRIBUTION SYSTEMS
SECRETARIAT: SECRETARY:
Russian Federation Mr Lev Travin
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 115
Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:

EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.

TITLE:
Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems -
Part 2: Modular multilevel converters

PROPOSED STABILITY DATE: 2025

NOTE FROM TC/SC OFFICERS:
This document is circulated as a CDV in accordance with the decision taken at SC 22F meeting held in Xi'an,
China, on October 23-24, 2017 (see 22F/472/RM, Item 9, Decision 2017-07, Action 2017-04). The Working Draft
of the Amendment was developed by SC 22F Maintenance Team 31 (convenor Mr. Colin Davidson, Great
Britain).

Copyright © 2018 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

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SIST EN 62751-2:2014/oprA1:2018
62751-2/Ed1/A1/CDV © IEC (E)              - 2 -                           22F/479/CDV

1 FOREWORD
2 This amendment has been prepared by subcommittee 22F: Power electronics for electrical
3 transmission and distribution systems, of IEC technical committee 22: Power electronic
4 systems and equipment.
5 The text of this amendment is based on the following documents:
FDIS Report on voting
22F/xxx/FDIS 22F/xxx/RVD
6
7 Full information on the voting for the approval of this amendment can be found in the report
8 on voting indicated in the above table.
9 The committee has decided that the contents of this amendment and the base publication will
10 remain unchanged until the stability date indicated on the IEC web site under
11 "http://webstore.iec.ch" in the data related to the specific publication. At this date, the
12 publication will be
13 • reconfirmed,
14 • withdrawn,
15 • replaced by a revised edition, or
16 • amended.
17
18
19
20
21
22
23
24
25
26
27
28

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SIST EN 62751-2:2014/oprA1:2018
62751-2/Ed1/A1/CDV © IEC (E)             - 3 -                           22F/479/CDV

29 3  Terms, definitions, symbols and abbreviated terms
30 3.1.11
31
...

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