IEC 61803:1999/AMD1:2010

IEC 61803 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Determination of power losses in high-voltage direct current (HVDC) converter
stations with line-commutated converters

Détermination des pertes en puissance dans les postes de conversion en
courant continu à haute tension (CCHT) munis de convertisseurs commutés par
le réseau
IEC 61803:1999/A1:2010
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IEC 61803 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Determination of power losses in high-voltage direct current (HVDC) converter
stations with line-commutated converters

Détermination des pertes en puissance dans les postes de conversion en
courant continu à haute tension (CCHT) munis de convertisseurs commutés par
le réseau
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
F
CODE PRIX
ISBN 978-2-88912-272-1
ICS 29.200
– 2 – 61803 Amend.1 Ó IEC:2010
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/214/CDV 22F/224/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 web site 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• withdrawn,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.
_____________
Determination of power losses in high-voltage direct current (HVDC) converter stations.
Replace the title of the document as follows:
Determination of power losses in high-voltage direct current (HVDC) converter stations
with line-commutated converters
2 Normative references
Delete the following reference:
IEC 60289:1988, Reactors
Replace the existing references to IEC 60076-1:1993, IEC 60633:1998, IEC 60700-1:1988,
IEC 60747-6:1983 and IEC 60871-1:1997 as follows:
IEC 60076-1, Power transformers – Part 1: General
IEC 60633, Terminology for high-voltage direct current (HVDC) transmission
IEC 60700-1, Thyristor valves for high voltage direct current (HVDC) power transmission –
Part 1: Electrical testing
IEC 60747-6, Semiconductor devices – Part 6: Thyristors

61803 Amend.1 Ó IEC:2010 – 3 –
IEC 60871-1, Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V –
Part 1: General
Add the following new reference:
IEC 60076-6, Power transformers – Part 6: Reactors
3 Definitions and symbols
3.1 Definitions
Add the following new definition
3.1.7
station essential auxiliary load
load whose failure will affect the conversion capability of the HVDC converter station (e.g.
valve cooling), as well as load that must remain working in case of complete loss of a.c.
power supply (e.g. battery chargers, operating mechanisms)
NOTE Total “operating losses” minus “no load operation losses” may be considered as being quantitatively
equivalent to “load losses” as in conventional a.c. substation practice.
3.2 Letter symbols
Replace the definitions of letter symbols α, µ, Id, R and U as follows:
v0
α (trigger) delay angle, in radians (rad)
µ overlap angle, in radians (rad)
I direct current, in amperes (A)
d
R resistance value, in ohms (W)
U r.m.s. value of the phase-to-phase no-load voltage on the valve side of the converter
v0
transformer excluding harmonics, in volts (V)
4.2.1 Outdoor standard reference temperature
Add, after the first sentence, the following new sentence:
Corresponding valve hall temperature may be defined by the supplier if necessary.
Add the following note:
NOTE If not defined, the wet-bulb temperature is recommended to be 14 °C which corresponds to approximately
50 % RH at 20 °C dry bulb temperature.
4.3 Operating parameters
Add the following words at the end of the fourth paragraph:
“… or as decided by the control system for the defined operating condition”.

– 4 – 61803 Amend.1 Ó IEC:2010
5.1 Thyristor valve losses
Replace, in the first line of the third paragraph, the words “Symbol t combines …” with
“Symbol th combines …”.
5.1.4 D.C. voltage-dependent loss per valve
Replace the following equation for P :
v4
U 2
ì ü
4 3 6 m- 12 m- 7
ï ï
v0
P = + [cos()2a+ cos(2a+ 2m)]+ [sin()2a- sin(2a+2m)+2m]
í ý
V4
ï ï
R
2p  î 3 4 8 þ
DC
with the following new equation:
ì ü
U
4 3 6m- 12m- 7
ï ï
v0
P= p+ [cos ()2a+ cos (2a+ 2m)]+ [sin ()2a- sin (2a+2m)+2m]
í ý
v4
2p  R 3 4 8
ï ï
DC
î þ
5.2.3 Operating losses
Add the following note at the end of the subclause:
NOTE 3 The measured values for P , P , and P are based on the reference temperature as given in
R SE1 WE1
IEC 60076-1. Values should be corrected to the operating temperature of the transformer.
5.2.4 Auxiliary power losses
Replace the final sentence as follows::
They shall be measured separately during factory test.
5.3.1 General
Add, at the end of the subclause, the following new paragraph:
For the calculation, it shall be assumed that the a.c. system operates at nominal frequency
and the filter components are at their nominal values.
5.3.2 AC filter capacitor losses
Add, at the end of the subclause, the following new paragraph:
Losses in low voltage capacitors (for filters with 2 or more tuning frequencies) are very small
and can be neglected.
5.3.3 AC filter reactor losses
Replace, in the third line, the phrase “.corrected to the maximum operating temperature of
the winding.” with “…corrected to the operating temperature of the winding.”.
5.5 Shunt reactor losses
Replace, in the first paragraph, the reference to “IEC 60289” by “IEC 60076-6”:.

61803 Amend.1 Ó IEC:2010 – 5 –
5.6 DC smoothing reactor losses
Replace, in the third paragraph, the reference to “IEC 60289” by “IEC 60076-6”.
Replace the last sentence of the last paragraph as follows:
They shall be measured separately during the factory test.
5.7.3 DC filter reactor losses
Replace in the first paragraph, fourth line, the phrase “.corrected to the maximum operating
temperature of the winding.” with “.corrected to the operating temperature of the winding”.
5.8 Auxiliaries and station service losses
Add, at the end of th
...