IEC TS 63471:2023
(Main)DC voltages for HVDC grids
DC voltages for HVDC grids
IEC TS 63471:2023 provides a recommended DC voltage series for HVDC grids with a DC voltage above 1,5 kV. It concerns the selection of a nominal DC voltage of multi-terminal HVDC power transmission and distribution systems and meshed HVDC networks, grids, rather than a rated DC voltage or highest DC voltage.
There is no stringent requirement to consider this DC voltage series for the DC voltage selection for any stand-alone (not forming part of DC Grid) HVDC projects, e.g. a point-to-point HVDC power transmission and distribution system. However, in order to facilitate the later progression towards larger HVDC systems in the future the use of standardized DC voltages is very useful. At later stages, with multi-terminal systems and meshed HVDC grids, the use of harmonized voltages will indeed become essential in order to optimize both capital and operational costs. Also, for entirely new projects, system planning should include this outlook and can benefit from the use of the recommended DC voltage series.
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Standards Content (Sample)
IEC TS 63471 ®
Edition 1.0 2023-12
TECHNICAL
SPECIFICATION
DC voltages for HVDC grids
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IEC TS 63471 ®
Edition 1.0 2023-12
TECHNICAL
SPECIFICATION
DC voltages for HVDC grids
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.200; 29.240.01 ISBN 978-2-8322-7998-4
– 2 – IEC TS 63471:2023 IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Recommended DC voltages for HVDC grids . 7
Bibliography . 8
Table 1 – Recommended nominal DC voltages for HVDC grids with a DC voltage
above 1,5 kV . 7
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DC VOLTAGES FOR HVDC GRIDS
FOREWORD
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IEC TS 64571 has been prepared by IEC technical committee 115: High Voltage Direct Current
(HVDC) transmission for DC voltages above 100 kV. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
115/343/DTS 115/358/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.
– 4 – IEC TS 63471:2023 IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
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The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
INTRODUCTION
While high voltage direct current (HVDC) solutions for bulk power transmission have been
developed and implemented commercially since 1954, recent years have seen a strong
increase in the number
...
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