Railway applications - Fixed installations - Electronic power converters - Part 3-1: AC traction applications - Electronic power compensators

IEC 62590-3-1:2022 specifies the requirements and test methods for electronic power compensators for 1AC traction systems. This equipment is used to improve electric power quality inside the electric traction system and/or at the interface to the 3AC power network, applying power electronics technology.
This document applies to equipment which is installed to achieve one or more of the following objectives as its function(s):
- to mitigate voltage fluctuation;
- to improve power factor;
- to reduce imbalance at the interface to the 3AC power network.
This document applies to equipment with all possible configurations to implement different technical solutions for compensation, but equipment consisting of only passive components is excluded.

Applications ferroviaires - Installations fixes - Convertisseurs électroniques de puissance - Partie 3-1: Applications de traction en courant alternatif - Compensateurs électroniques de puissance

IEC 62590-3-1:2022 spécifie les exigences ainsi que les méthodes d'essai applicables aux compensateurs électroniques de puissance utilisés avec les systèmes de traction en courant alternatif monophasé (1AC). Les compensateurs sont utilisés afin d'améliorer la qualité de l'électricité au sein du système de traction électrique et/ou au niveau de l'interface avec le réseau de distribution en courant alternatif triphasé (3AC), en employant l'électronique de puissance.
Le présent document s'applique aux compensateurs mis en œuvre dans le but de répondre à un ou plusieurs des objectifs suivants:
- atténuer les fluctuations de tension ;
- améliorer le facteur de puissance ;
- réduire les déséquilibres au niveau de l'interface avec le réseau de distribution 3AC.
Le présent document s'applique aux équipements de toutes les configurations possibles qui permettent de mettre en œuvre différentes solutions techniques de compensation, mais pas aux équipements exclusivement constitués de composants passifs.

General Information

Status
Published
Publication Date
11-Aug-2022
Current Stage
PPUB - Publication issued
Completion Date
12-Aug-2022
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IEC 62590-3-1
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Fixed installations – Electronic power converters –
Part 3-1: AC traction applications – Electronic power compensators

Applications ferroviaires – Installations fixes – Convertisseurs electroniques de

puissance –
Partie 3-1: Applications de traction en courant alternatif – Compensateurs
électroniques de puissance
IEC 62590-3-1:2022-08(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62590-3-1
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Fixed installations – Electronic power converters –
Part 3-1: AC traction applications – Electronic power compensators

Applications ferroviaires – Installations fixes – Convertisseurs electroniques de

puissance –
Partie 3-1: Applications de traction en courant alternatif – Compensateurs
électroniques de puissance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 45.060.01 ISBN 978-2-8322-4774-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62590-3-1:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms, definitions and abbreviated terms ........................................................................ 9

3.1 Terms and definitions.............................................................................................. 9

3.2 Abbreviated terms ................................................................................................. 14

4 Types of electronic power compensators ....................................................................... 14

4.1 General ................................................................................................................. 14

4.2 Single-phase equipment which injects reactive power into a 1AC traction

system .................................................................................................................. 17

4.2.1 General ......................................................................................................... 17

4.2.2 Equipment installed on the far end or middle of a 1AC traction system .......... 17

4.2.3 Equipment installed on the near end of a 1AC traction system ....................... 18

4.3 Multi-phase equipment connected to the 1AC traction side ................................... 18

4.3.1 General ......................................................................................................... 18

4.3.2 Equipment exchanging active power between a pair of different 1AC

circuits and/or injecting reactive power into 1AC circuits ................................ 18

4.3.3 Application of Steinmetz principle .................................................................. 21

4.3.4 Equipment connected to the traction side of the V-connection

transformer .................................................................................................... 22

4.4 Application on 3AC power network ........................................................................ 23

4.4.1 General ......................................................................................................... 23

4.4.2 Equipment connected to the 3AC power network side of a traction

transformer .................................................................................................... 23

5 Design and integration ................................................................................................... 25

5.1 General ................................................................................................................. 25

5.2 Survey of power quality criteria ............................................................................. 26

5.3 Survey of the condition of the 3AC power network ................................................ 26

5.4 Traction load requirements ................................................................................... 26

5.5 Estimation of the power quality without any countermeasures ............................... 26

5.5.1 General ......................................................................................................... 26

5.5.2 Calculation of voltage drop in a 1AC traction system ..................................... 26

5.5.3 Calculation of three-phase imbalance at the interface to 3AC power

network ......................................................................................................... 27

5.5.4 Calculation of power factor at the interface to 3AC power network ................. 27

5.6 Choice of the countermeasures ............................................................................. 27

5.7 Evaluation of the electronic power compensator ................................................... 27

5.8 Specification of the electronic power compensator ................................................ 28

5.8.1 General ......................................................................................................... 28

5.8.2 Coordination with other systems .................................................................... 28

6 Performance requirements ............................................................................................ 28

6.1 General ................................................................................................................. 28

6.1.1 Rating ............................................................................................................ 28

6.1.2 Number of connected phases ........................................................................ 29

6.1.3 Temperature rise ........................................................................................... 29

6.1.4 Losses and efficiency .................................................................................... 29

---------------------- Page: 4 ----------------------
IEC 62590-3-1:2022 © IEC 2022 – 3 –

6.2 Control and protective function ............................................................................. 30

6.2.1 Start and stop sequence ................................................................................ 30

6.2.2 Control function ............................................................................................. 31

6.2.3 Protective function ......................................................................................... 31

6.3 Electromagnetic compatibility (EMC) ..................................................................... 31

6.4 Harmonics ............................................................................................................ 32

6.5 Failure conditions for the electronic power compensator ....................................... 32

6.6 Mechanical characteristics .................................................................................... 32

6.6.1 General ......................................................................................................... 32

6.6.2 Safety requirements for maintenance ............................................................. 33

6.6.3 Environmental conditions ............................................................................... 33

6.6.4 Degree of protection ...................................................................................... 33

6.7 Electrical safety requirements for maintenance ..................................................... 33

6.8 Rating plate .......................................................................................................... 33

7 Tests ............................................................................................................................. 34

7.1 Test category ........................................................................................................ 34

7.1.1 General ......................................................................................................... 34

7.1.2 Type test ....................................................................................................... 34

7.1.3 Routine test ................................................................................................... 34

7.1.4 Large equipment ............................................................................................ 35

7.1.5 Overview of tests ........................................................................................... 35

7.2 Test items ............................................................................................................. 36

7.2.1 Visual inspection ........................................................................................... 36

7.2.2 Test of accessory and auxiliary components .................................................. 36

7.2.3 Insulation test ................................................................................................ 36

7.2.4 Start and stop sequence test ......................................................................... 37

7.2.5 Checking of the protective functions .............................................................. 37

7.2.6 Control function test ...................................................................................... 37

7.2.7 Light load functional test ................................................................................ 37

7.2.8 Load test ....................................................................................................... 38

7.2.9 Temperature rise test .................................................................................... 38

7.2.10 Power loss determination............................................................................... 38

7.2.11 Acoustic noise measurement ......................................................................... 38

7.2.12 EMC test ....................................................................................................... 38

7.2.13 Harmonic measurement ................................................................................. 39

7.2.14 Degree of protection test ............................................................................... 39

Annex A (informative) Calculation of voltage drop in a 1AC traction system ......................... 40

Annex B (informative) Calculation of three-phase imbalance at the interface to a 3AC

power network ...................................................................................................................... 41

Annex C (informative) Examples of limits of power quality at the interface to a 3AC

power network ...................................................................................................................... 43

C.1 General ................................................................................................................. 43

C.2 Examples of limits of three-phase imbalance ........................................................ 43

C.3 Examples of limits of harmonics ............................................................................ 44

C.3.1 General ......................................................................................................... 44

C.3.2 Japan ............................................................................................................ 45

C.3.3 China ............................................................................................................. 45

C.3.4 France ........................................................................................................... 46

Bibliography .......................................................................................................................... 47

---------------------- Page: 5 ----------------------
– 4 – IEC 62590-3-1:2022 © IEC 2022
Figure 1 – Example of the possible electrical position of electronic power

compensators ....................................................................................................................... 15

Figure 2 – Single-phase equipment installed on the far end or middle of a 1AC traction

system .................................................................................................................................. 17

Figure 3 – Single-phase equipment installed on the near end of a 1AC traction system ........ 18

Figure 4 – Equipment exchanging active power between a pair of orthogonal 1AC

circuits and/or injecting reactive power into 1AC circuits ....................................................... 20

Figure 5 – Application of Steinmetz principle ........................................................................ 22

Figure 6 – Equipment connected to traction side of the V-connection traction

transformer ........................................................................................................................... 23

Figure 7 – Equipment which reduces imbalance at the 3AC power network side of a

traction transformer .............................................................................................................. 24

Figure 8 – Equipment which reduces imbalance generated in multiple traction

substations as a whole .......................................................................................................... 25

Figure A.1 – Calculation of voltage drop in a 1AC traction system......................................... 40

Figure B.1 – Typical interface methods between power network and 1AC traction

system .................................................................................................................................. 41

Table 1 – Types of typical electronic power compensators .................................................... 16

Table 2 – Immunity level ....................................................................................................... 32

Table 3 – Overview of tests................................................................................................... 35

Table B.1 – Formulae to calculate voltage imbalance at primary side of a traction

transformer ........................................................................................................................... 41

Table C.1 – Examples of limits of three-phase imbalance ..................................................... 44

Table C.2 – Limitation of harmonic content in Japan ............................................................. 45

Table C.3 – Limitation of harmonic content in China ............................................................. 45

Table C.4 – Factors for limitation of harmonic content in France ........................................... 46

---------------------- Page: 6 ----------------------
IEC 62590-3-1:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS – FIXED INSTALLATIONS –
ELECTRONIC POWER CONVERTERS –
Part 3-1: AC traction applications –
Electronic power compensators
FOREWORD

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rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC 62590-3-1 has been prepared by IEC technical committee 9: Electrical equipment and

systems for railways. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
9/2843/FDIS 9/2864/RVD

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 International Standard is English.
---------------------- Page: 7 ----------------------
– 6 – IEC 62590-3-1:2022 © IEC 2022

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/publications.

A list of all parts in the IEC 62590 series, published under the general title Railway applications

– Fixed installations – Electronic power converters, can be found on the IEC website.

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,
• replaced by a revised edition, or
• amended.
---------------------- Page: 8 ----------------------
IEC 62590-3-1:2022 © IEC 2022 – 7 –
INTRODUCTION

Single-phase AC traction systems are typically used for railway lines with high power load up

to the double-digit MW range. The nature of the loads serving the intended traffic in those

railway lines leads to permanent power fluctuations. Due to their inherent structure, single-

phase traction systems are prone to having difficulty with power quality indicators such as power

factor, voltage fluctuation and/or imbalance within the electric traction system and/or the

feeding three-phase power network. In order to improve the power quality, an electronic power

compensator can be applied.

Components of electronic power compensators especially electronic power converters must

withstand the more rugged electric environment when compared with those for other industrial

use, due to the nature of electric traction systems mentioned above. This includes not only high

load fluctuation, but also frequent switching operation with inrush current and short circuits

caused by faults on the overhead contact line systems. Therefore, specific requirements are

needed in addition to the common requirements for converters for other industrial use.

This document defines typical system configurations and basic requirements as well as

appropriate test methods for electronic power compensators used for single-phase AC traction

systems. This document is intended for the use by railway operators, manufacturers and system

integrators.
---------------------- Page: 9 ----------------------
– 8 – IEC 62590-3-1:2022 © IEC 2022
RAILWAY APPLICATIONS – FIXED INSTALLATIONS –
ELECTRONIC POWER CONVERTERS –
Part 3-1: AC traction applications –
Electronic power compensators
1 Scope

This document specifies the requirements and test methods for electronic power compensators

for 1AC traction systems. This equipment is used to improve electric power quality inside the

electric traction system and/or at the interface to the 3AC power network, applying power

electronics technology.

This document applies to equipment which is installed to achieve one or more of the following

objectives as its function(s):
• to mitigate voltage fluctuation;
• to improve power factor;
• to reduce imbalance at the interface to the 3AC power network.

NOTE In some cases, this type of equipment is used to reduce harmonics from the traction load towards the 3AC

power network, and for energy saving.

The equipment designed to conform to each particular installation site and the packaged

equipment for generic use both fall within the scope of this document.

This document applies to equipment with all possible configurations to implement different

technical solutions for compensation, but equipment consisting of only passive components is

excluded.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.

IEC 60050-151:2001, International Electrotechnical Vocabulary (IEV) – Part 151: Electrical and

magnetic devices
IEC 60050-151:2001/AMD1:2013
IEC 60050-151:2001/AMD2:2014
IEC 60050-151:2001/AMD3:2019
IEC 60050-151:2001/AMD4:2020
IEC 60050-151:2001/AMD5:2021

IEC 60146-1-1:2009, Semiconductor converters – General requirements and line commutated

converters – Part 1-1: Specification of basic requirements

IEC 60146-2:1999, Semiconductor converters – Part 2: Self-commutated semiconductor

converters including direct d.c. converters
IEC 60529, Degrees of protection provided by enclosures (IP Code)
---------------------- Page: 10 ----------------------
IEC 62590-3-1:2022 © IEC 2022 – 9 –
IEC 60850, Railway applications – Supply voltages of traction systems

IEC 61000-4-30:2015, Electromagnetic compatibility (EMC) – Part 4-30: Testing and

measurement techniques – Power quality measurement methods
IEC 61000-4-30:2015/AMD1:2021
IEC 61936-1, Power installations exceeding 1 kV AC and 1,5 kV DC – Part 1: AC

IEC 62236-2, Railway applications – Electromagnetic compatibility – Part 2: Emission of the

whole railway system to the outside world
IEC 62236-5, Railway applications – Electromagnetic compatibility – Part 5: Emi
...

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