IEC 62751-1:2014/AMD1:2018

Amendment 1 - Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 1: General requirements

Specifies end-to-end dimensions for given nominal sizes and pressure ratings of buttweld, two-way, global-type, straigth pattern control valves for nominal sizes DN 15 through DN 450. Aids users in their piping design by providing normalized dimensions of buttweld end control valves.

Amendement 1 - Pertes de puissance dans les valves à convertisseur de source de tension (VSC) des systèmes en courant continu à haute tension (CCHT) - Partie 1: Exigences générales

Spécifie pour les classes de pressions et les dimensions nominales données, les dimensions bout à bout des vannes de régulation à soupape à deux voies, à corps droit avec embouts à souder pour les dimensions nominales DN 15 à DN 450. Aide les utilisateurs à configurer leurs tuyauteries en fournissant les dimensions normalisées de vannes de régulation à embouts à souder.

General Information

• Status: Published
• Publication Date: 19-Apr-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 23.060.40 - Pressure regulators
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• ICS: 29.240.99 - Other equipment related to power transmission and distribution networks
• Technical Committee: SC 22F - Power electronics for electrical transmission and distribution systems
• Drafting Committee: MT 31 - TC 22/SC 22F/MT 31
• Current Stage: PPUB - Publication issued
• Start Date: 27-Apr-2018
• Completion Date: 20-Apr-2018

Relations

• Amends: IEC 62751-1:2014 - Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 1: General requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62751-1 ®
Edition 1.0 2018-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 1
AM ENDEMENT 1
Power losses in voltage sourced converter (VSC) valves for high-voltage direct
current (HVDC) systems –
Part 1: General requirements
Pertes de puissance dans les valves à convertisseur de source de tension (VSC)
des systèmes en courant continu à haute tension (CCHT) –
Partie 1: Exigences générales
IEC 62751-1:2014-08/AMD1:2018-04(en-fr)

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IEC 62751-1 ®
Edition 1.0 2018-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 1
AM ENDEMENT 1
Power losses in voltage sourced converter (VSC) valves for high-voltage direct

current (HVDC) systems –
Part 1: General requirements
Pertes de puissance dans les valves à convertisseur de source de tension (VSC)

des systèmes en courant continu à haute tension (CCHT) –

Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200; 29.240.99 ISBN 978-2-8322-5568-1

– 2 – IEC 62751-1:2014/AMD1:2018
© IEC 2018
FOREWORD
This amendment has been prepared by subcommittee 22F: Power electronics for electrical
transmission and distribution systems, of IEC technical committee 22: Power electronic
systems and equipment.
The text of this amendment is based on the following documents:
CDV Report on voting
22F/439A/CDV 22F/458A/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
_____________
2 Normative references
Add the following new normative reference:
ISO/IEC Guide 98-3, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)
4.1 General
Add, after the first existing paragraph, the following new paragraph:
The overall uncertainty of the value of losses is an important parameter for a converter and
for a converter station since the value of losses is used to compare investment cost to
capitalized cost over the life-time of the converter station. To ensure that estimates are
undisputed, adherence to the provisions of this standard and the provisions of
ISO/IEC Guide 98-3 is indispensable. All measurements shall furthermore be traceable to
national and/or international standards of measurement.

© IEC 2018
Add, before the last existing paragraph, the following new paragraph:
Thus, for most cases, the losses are estimated from component characteristics, using suitable
mathematical models of the converters. It is however important th
...