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BS EN IEC 61803:2020

BS EN IEC 61803:2020

$167.15

Determination of power losses in high-voltage direct current (HVDC) converter stations with line-commutated converters

Published By Publication Date Number of Pages
BSI 2020 44
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This document applies to all line-commutated high-voltage direct current (HVDC) converter stations used for power exchange (power transmission or back-to-back installation) in utility systems. This document presumes the use of 12-pulse thyristor converters but can, with due care, also be used for 6-pulse thyristor converters.

In some applications, synchronous compensators or static var compensators (SVC) may be connected to the AC bus of the HVDC converter station. The loss determination procedures for such equipment are not included in this document.

This document presents a set of standard procedures for determining the total losses of an HVDC converter station. The procedures cover all parts, except as noted above, and address no-load operation and operating losses together with their methods of calculation which use, wherever possible, measured parameters.

Converter station designs employing novel components or circuit configurations compared to the typical design assumed in this document, or designs equipped with unusual auxiliary circuits that could affect the losses, are assessed on their own merits.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publications with their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms, definitions and symbols
12 3.1 Terms and definitions
13 3.2 Symbols
4 Overview
4.1 General
14 4.2 Ambient conditions
4.2.1 General
4.2.2 Outdoor standard reference temperature
4.2.3 Coolant standard reference temperature
15 4.2.4 Standard reference air pressure
4.3 Operating parameters
5 Determination of equipment losses
5.1 Thyristor valve losses
5.1.1 General
16 5.1.2 Thyristor conduction loss per valve
17 5.1.3 Thyristor spreading loss per valve
5.1.4 Other conduction losses per valve
18 5.1.5 DC voltage-dependent loss per valve
19 5.1.6 Damping loss per valve (resistor-dependent term)
5.1.7 Damping loss per valve (change of capacitor energy term)
20 5.1.8 Turn-off losses per valve
5.1.9 Reactor loss per valve
21 5.1.10 Total valve losses
5.1.11 Temperature effects
5.1.12 No-load operation loss per valve
22 5.2 Converter transformer losses
5.2.1 General
5.2.2 No-load operation losses
5.2.3 Operating losses
23 5.2.4 Auxiliary power losses
24 5.3 AC filter losses
5.3.1 General
5.3.2 AC filter capacitor losses
5.3.3 AC filter reactor losses
25 5.3.4 AC filter resistor losses
5.3.5 Total AC filter losses
5.4 Shunt capacitor bank losses
5.5 Shunt reactor losses
26 5.6 DC smoothing reactor losses
5.7 DC filter losses
5.7.1 General
27 5.7.2 DC filter capacitor losses
5.7.3 DC filter reactor losses
28 5.7.4 DC filter resistor losses
5.7.5 Total DC filter losses
5.8 Auxiliaries and station service losses
29 5.9 Series filter losses
30 5.10 Other equipment losses
31 Figures
Figure 1 – Typical high-voltage direct current (HVDC) equipment for one pole
32 Figure 2 – Simplified three-phase diagram of an HVDC 12-pulse converter
Figure 3 – Simplified equivalent circuit of a typical thyristor valve
33 Figure 4 – Current and voltage waveforms of a valve operating in a 12-pulse converter
34 Figure 5 – Thyristor on-state characteristic
Figure 6 – Conduction current and voltage drop
35 Figure 7 – Distribution of commutating inductance between L1 and L2
Figure 8 – Thyristor current during reverse recovery
36 Annex A (informative) Calculation of harmonic currents and voltages
38 Annex B (informative) Typical station losses
Tables
Table B.1 – Typical values of losses
39 Annex C (informative) HVDC converter station loss evaluation – An illustration
41 Table C.1 – Conditions for calculation of losses in case D1
Table C.2 – Conditions for calculation of losses in case D2
42 Bibliography

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BS EN IEC 61803:2020
$167.15