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BSI PD IEC TR 63127:2019

BSI PD IEC TR 63127:2019

$198.66

Guideline for the system design of HVDC converter stations with line-commutated converters

Published By Publication Date Number of Pages
BSI 2019 68
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System design is the basis of construction and operation of HVDC systems. It defines the overall philosophy for the HVDC transmission system and enables the ratings and specifications for the equipment integrated in the project.

This document focuses on the system design of converter stations. It is applicable to point-topoint and back-to-back HVDC systems based on line-commutated converter (LCC) technology.

This document provides guidance and supporting information on the procedure for system design and the technical issues involved in the system design of HVDC transmission projects for both purchaser and potential suppliers. It can be used as the basis for drafting a procurement specification and as a guide during project implementation.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
3 Terms and definitions
12 4 Symbols
4.1 Letter symbols for variables
13 4.2 Subscripts
5 Overview of HVDC system design
5.1 General
14 Figures
Figure 1 – System design in an HVDC project
15 5.2 Formulation of system design
5.2.1 HVDC system ratings
5.2.2 HVDC system configuration
5.2.3 Reactive power compensation and control
5.2.4 AC/DC interaction and control
16 5.2.5 Insulation coordination
5.2.6 AC/DC harmonic filtering
5.2.7 Environmental considerations
5.3 System studies and simulations
17 Tables
Table 1 – Studies and simulations in HVDC system design
18 6 Determination of design conditions and requirements
6.1 Environmental conditions and requirements
19 6.2 DC transmission line (cable) and earth electrode
6.2.1 Parameters of DC overhead transmission line
20 6.2.2 Parameters of DC cable
6.2.3 Parameters of electrode line and ground electrode
6.3 AC system conditions
6.3.1 Operating scenarios of AC/DC system
6.3.2 AC system modelling
21 6.3.3 Relevant AC system protection
6.3.4 Reactive power supply and absorption
22 6.3.5 Short-circuit current or capacity
6.3.6 AC bus voltage
23 6.3.7 AC system frequency
6.3.8 Pre-existing harmonic and negative sequence voltage
Figure 2 – Example of schematic diagram of AC system frequency variation range
24 6.4 Requirements for HVDC systems arising from AC/DC interaction
25 6.5 AC system equivalents
6.5.1 General
6.5.2 Equivalent for AC/DC system dynamic or transient simulation
26 6.5.3 Impedance equivalent for AC filter design
Figure 3 – Sector diagram of system harmonic impedance
27 6.5.4 System equivalent for low order harmonic resonance study
Figure 4 – Circle diagram of system harmonic impedance
28 7 Main circuit design
7.1 Ratings
7.1.1 Rated power
Figure 5 – Structure of equivalent network for low order harmonic resonance study
29 7.1.2 Rated voltage
Table 2 – Preferred rated voltages for overhead line HVDC power transmission
Table 3 – Preferred rated voltages for submarine HVDC power transmission
30 7.1.3 Rated current
7.2 Configurations
7.2.1 Pole and return path
31 7.2.2 Converter topology
32 7.2.3 DC switchyard configuration
Figure 6 – Converter transformer connection topology
35 Figure 7 – Sketch maps of the DC yard switches of HVDC system
Figure 8 – Schematic diagram of converter parallel connection
36 Figure 9 – Schematic diagram of pole line parallel connection
Figure 10 – Procedure of NBS disconnecting DC fault
37 Figure 11 – Current transfer path of the MRTS
Figure 12 – Current transfer path of ERTS
38 Figure 13 – Connection and function of the NBES
Figure 14 – Commutating process of NBES in case of DMR
39 Figure 15 – High speed bypass switch
Figure 16 – Converter paralleling switches
40 7.2.4 Reactive power equipment
7.3 Determination of main circuit parameters
7.3.1 General
41 7.3.2 Control strategy
42 7.3.3 Tolerances and errors
7.3.4 Determination of converter transformer impedance
7.3.5 Relative inductive voltage drop (dxN) and relative resistive voltage drop (drN)
43 7.3.6 Ideal no-load DC voltage
7.3.7 DC voltage and DC current
44 7.3.8 Rated capacity of converter transformer
45 7.3.9 Converter transformer taps
46 7.3.10 Inductance of smoothing reactor
8 Insulation coordination
47 9 Filter design
9.1 General
9.2 AC filter design
9.3 DC filter design
48 9.4 Power line carrier (PLC) filters
9.5 Radio frequency interference (RFI)
49 10 Reactive power compensation and control
10.1 General
10.2 Reactive power consumption
10.2.1 Reactive power consumption calculation
50 10.2.2 Maximum reactive power consumption
10.2.3 Minimum reactive power consumption
10.3 Determination of reactive power equipment capacity
10.3.1 General
10.3.2 Capacity of reactive power supply equipment
10.3.3 Capacity of reactive power absorption equipment
51 10.3.4 Sizing of reactive power sub-bank
10.3.5 Sizing of reactive power bank
10.4 Reactive power control
10.4.1 General
52 10.4.2 Reactive power exchange control/voltage control
10.4.3 Voltage limitation
53 10.5 Temporary overvoltage control
11 Basic parameters of main equipment
11.1 General
11.2 Converter valves
11.2.1 General
11.2.2 Valve hall environment
54 11.2.3 Current rating
11.2.4 Voltage rating
55 11.2.5 Losses of converter valves
11.2.6 Testing requirements
11.3 Converter transformers
11.3.1 General
56 11.3.2 Current rating
11.3.3 Voltage rating
11.3.4 Other rating
11.3.5 Rated loss
57 11.3.6 Test requirements
11.4 Smoothing reactor
11.4.1 General
11.4.2 Current ratings
58 11.4.3 Voltage rating
11.4.4 Other ratings
11.4.5 Losses
11.4.6 Test requirements
11.5 Wall bushings
11.5.1 General
11.5.2 Current rating
11.5.3 Voltage rating
11.5.4 Testing requirement
59 11.6 AC and DC filter equipment
11.7 PLC filter equipment
11.8 Other equipment in DC yard
60 Annex A (informative) Typical control, measurement and equipment manufacturing tolerance in HVDC systems
Table A.1 – Tolerance for main circuit calculation
Table A.2 – Control parameters for main circuit calculation
61 Annex B (informative)Technical parameters for equipment specification
B.1 Converter valve
63 B.2 Converter transformer
64 B.3 Smoothing reactor
65 Bibliography

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BSI PD IEC TR 63127:2019
$198.66