Voltage sourced converter (VSC) valves for static synchronous compensator (STATCOM) - Electrical Testing (IEC 62927:2017)

This document applies to self-commutated valves, for use in voltage sourced converter (VSC)
for static synchronous compensator (STATCOM). It is restricted to electrical type and
production tests.
The tests specified in this document are based on air insulated valves. For other types of
valves, the test requirements and acceptance criteria are agreed between the purchaser and
the supplier.

Ventile von Spannungszwischenkreis-Stromrichtern (VSC) für STATCOM - Elektrische Prüfungen (IEC 62927:2017)

Valves de convertisseur source de tension (VSC) pour compensateur synchrone statique (STATCOM) - Essais électriques (IEC 62927:2017)

L'IEC 62927:2017 s'applique aux valves autocommutées, conçues pour être utilisées dans un convertisseur source de tension (VSC) pour compensateur synchrone statique (STATCOM). Elle se limite aux essais de type électrique et de production. Les essais spécifiés dans le présent document sont établis pour des valves isolées à l'air. Pour les autres types de valves, les exigences relatives aux essais et les critères d'acceptation font l'objet d'un accord entre le client et le fournisseur.

Elektronke za napetostno napajane pretvornike za statični sinhroni kompenzator (STATCOM) - Električno preskušanje (IEC 62927:2017)

Ta dokument se uporablja za ventile s samokomutacijo za uporabo v elektronkah za napetostno napajane pretvornike (VSC) za statični sinhroni kompenzator (STATCOM). Omejen je na električno vrsto in proizvodne preskuse.
Preskusi, določeni v tem dokumentu, temeljijo na zračno izoliranih elektronkah. Za druge vrste elektronk kupec in dobavitelj skleneta dogovor glede zahtev preskusa in meril sprejemljivosti.

General Information

Status
Published
Publication Date
09-Jan-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Dec-2017
Due Date
15-Feb-2018
Completion Date
10-Jan-2018

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SLOVENSKI STANDARD
SIST EN 62927:2018
01-februar-2018
(OHNWURQNH]DQDSHWRVWQRQDSDMDQHSUHWYRUQLNH]DVWDWLþQLVLQKURQLNRPSHQ]DWRU
67$7&20 (OHNWULþQRSUHVNXãDQMH ,(&
Voltage sourced converter (VSC) valves for static synchronous compensator
(STATCOM) - Electrical Testing (IEC 62927:2017)
Ventile von Spannungszwischenkreis-Stromrichtern (VSC) für STATCOM - Elektrische
Prüfungen (IEC 62927:2017)

Valves de convertisseur source de tension (VSC) pour compensateur synchrone statique

(STATCOM) - Essais électriques (IEC 62927:2017)
Ta slovenski standard je istoveten z: EN 62927:2017
ICS:
19.080 (OHNWULþQRLQHOHNWURQVNR Electrical and electronic
SUHVNXãDQMH testing
29.200 8VPHUQLNL3UHWYRUQLNL Rectifiers. Convertors.
6WDELOL]LUDQRHOHNWULþQR Stabilized power supply
QDSDMDQMH
SIST EN 62927:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 62927:2018
---------------------- Page: 2 ----------------------
SIST EN 62927:2018
EUROPEAN STANDARD EN 62927
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2017
ICS 29.200; 29.240.99
English Version
Voltage sourced converter (VSC) valves for static synchronous
compensator (STATCOM) - Electrical Testing
(IEC 62927:2017)

Valves de convertisseur source de tension (VSC) pour Ventile von Spannungszwischenkreis-Stromrichtern (VSC)

compensateur synchrone statique (STATCOM) - Essais für STATCOM - Elektrische Prüfungen

électriques (IEC 62927:2017)
(IEC 62927:2017)

This European Standard was approved by CENELEC on 2017-08-16. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62927:2017 E
---------------------- Page: 3 ----------------------
SIST EN 62927:2018
EN 62927:2017
European foreword

The text of document 22F/412/CDV, future edition 1 of IEC 62927, prepared by SC 22F "Power

electronics for electrical transmission and distribution systems", of IEC/TC 22 "Power electronic

systems and equipment" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN 62927:2017.
The following dates are fixed:
latest date by which the document has to be implemented at (dop) 2018-05-16
national level by publication of an identical national
standard or by endorsement
latest date by which the national standards conflicting with (dow) 2020-08-16
the document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

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

Endorsement notice

The text of the International Standard IEC 62927:2017 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

ISO/IEC 17025 NOTE Harmonized as EN ISO/IEC 17025.
IEC 61954 NOTE Harmonized as EN 61954.
IEC 62747 NOTE Harmonized as EN 62747.
---------------------- Page: 4 ----------------------
SIST EN 62927:2018
EN 62927:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60060 series High-voltage test techniques -- Part 1: EN 60060 series
General definitions and test requirements
IEC 60060-1 - High-voltage test techniques -- Part 1: EN 60060-1 -
General definitions and test requirements
IEC 60071-1 2006 Insulation co-ordination -- Part 1: EN 60071-1 2006
Definitions, principles and rules
IEC 60700-1 2015 Thyristor valves for high voltage direct EN 60700-1 2015
current (HVDC) power transmission -- Part
1: Electrical testing
IEC 62501 - Voltage sourced converter (VSC) valves EN 62501 -
for high-voltage direct curent (HVDC)
power transmission - Electrical testing
---------------------- Page: 5 ----------------------
SIST EN 62927:2018
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SIST EN 62927:2018
IEC 62927
Edition 1.0 2017-07
INTERNATIONAL
STANDARD
colour
inside
Voltage sourced converter (VSC) valves for static synchronous compensator
(STATCOM) – Electrical testing
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.200; 29.240.99 ISBN 978-2-8322-4521-7

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN 62927:2018
– 2 – IEC 62927:2017 © IEC 2017
CONTENTS

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

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 7

3.1 Insulation co-ordination terms ................................................................................. 7

3.2 Power semiconductor terms .................................................................................... 8

3.3 Operating states of converter .................................................................................. 8

3.4 STATCOM construction terms ................................................................................. 9

3.5 Valve structure terms ............................................................................................ 10

4 General requirements .................................................................................................... 11

4.1 Guidelines for the performance of type tests ......................................................... 11

4.1.1 General ......................................................................................................... 11

4.1.2 Dielectric tests ............................................................................................... 11

4.1.3 Operational tests ........................................................................................... 11

4.1.4 Electromagnetic interference tests ................................................................. 11

4.1.5 Evidence in lieu ............................................................................................. 11

4.1.6 Test object ..................................................................................................... 12

4.1.7 Test procedure .............................................................................................. 12

4.1.8 Ambient temperature for testing ..................................................................... 12

4.1.9 Frequency for testing ..................................................................................... 12

4.1.10 Conditions to be considered in determination of type test parameters ............ 12

4.1.11 Test reports ................................................................................................... 12

4.2 Atmospheric correction factor ............................................................................... 12

4.3 Treatment of redundancy ...................................................................................... 13

4.3.1 Operational tests ........................................................................................... 13

4.3.2 Dielectric tests ............................................................................................... 13

4.4 Permissible component failures during type testing ............................................... 14

5 List of tests .................................................................................................................... 14

6 Operational tests ........................................................................................................... 15

6.1 Purpose of tests .................................................................................................... 15

6.2 Test object ............................................................................................................ 15

6.3 Test circuit ............................................................................................................ 16

6.4 Maximum continuous operating duty test .............................................................. 16

6.5 Maximum temporary overload operating duty test ................................................. 17

6.6 Minimum start voltage test .................................................................................... 17

7 Dielectric tests on valve support .................................................................................... 18

7.1 Purpose of tests .................................................................................................... 18

7.2 Test object ............................................................................................................ 18

7.3 Test requirements ................................................................................................. 18

7.3.1 Valve support DC voltage test........................................................................ 18

7.3.2 Valve support AC voltage test ........................................................................ 19

7.3.3 Valve support lightning impulse test ............................................................... 20

8 Dielectric tests on multiple valve unit (MVU) .................................................................. 20

8.1 General ................................................................................................................. 20

8.2 Purpose of tests .................................................................................................... 20

8.3 Test object ............................................................................................................ 20

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SIST EN 62927:2018
IEC 62927:2017 © IEC 2017 – 3 –

8.4 Test requirements ................................................................................................. 20

8.4.1 MVU AC voltage test ..................................................................................... 20

8.4.2 MVU DC voltage test ..................................................................................... 21

8.4.3 MVU lightning impulse test ............................................................................ 21

9 Dielectric tests between valve terminals ........................................................................ 21

9.1 Purpose of the test ................................................................................................ 21

9.2 Test object ............................................................................................................ 22

9.3 Test methods ........................................................................................................ 22

9.3.1 General ......................................................................................................... 22

9.3.2 Method 1 ....................................................................................................... 22

9.3.3 Method 2 ....................................................................................................... 23

9.4 Test requirements ................................................................................................. 23

9.4.1 Valve AC voltage or AC-DC voltage test ........................................................ 23

9.4.2 Valve switching impulse test .......................................................................... 25

10 IGBT overcurrent turn-off test ........................................................................................ 26

10.1 Purpose of test ..................................................................................................... 26

10.2 Test object ............................................................................................................ 26

10.3 Test requirements ................................................................................................. 26

11 Tests for valve insensitivity to electromagnetic disturbance ........................................... 27

11.1 Purpose of tests .................................................................................................... 27

11.2 Test object ............................................................................................................ 27

11.3 Test requirements ................................................................................................. 27

11.3.1 General ......................................................................................................... 27

11.3.2 Approach 1 .................................................................................................... 27

11.3.3 Approach 2 .................................................................................................... 28

11.3.4 Acceptance criteria ........................................................................................ 28

12 Short-circuit current test (optional)................................................................................. 28

12.1 Purpose of tests .................................................................................................... 28

12.2 Test object ............................................................................................................ 28

12.3 Test requirements ................................................................................................. 29

13 Production tests............................................................................................................. 29

13.1 General ................................................................................................................. 29

13.2 Purpose of tests .................................................................................................... 29

13.3 Test object ............................................................................................................ 29

13.4 Test requirements ................................................................................................. 29

13.5 Production test objectives ..................................................................................... 30

13.5.1 Visual inspection ........................................................................................... 30

13.5.2 Connection check .......................................................................................... 30

13.5.3 Voltage-grading circuit check ......................................................................... 30

13.5.4 Control, protection and monitoring circuit checks ........................................... 30

13.5.5 Voltage withstand check ................................................................................ 30

13.5.6 Turn-on/turn-off check ................................................................................... 30

13.5.7 Pressure test ................................................................................................. 30

14 Presentation of type test results .................................................................................... 30

Annex A (informative) Overview of STATCOM valves .......................................................... 32

A.1 General ................................................................................................................. 32

A.2 STATCOM applications and operating limits ......................................................... 32

A.3 Overview of STATCOM valve types....................................................................... 33

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SIST EN 62927:2018
– 4 – IEC 62927:2017 © IEC 2017

A.4 STATCOMs based on switch type valve ................................................................ 33

A.4.1 General ......................................................................................................... 33

A.4.2 Two-level converter ....................................................................................... 34

A.4.3 Three-level converters ................................................................................... 34

A.4.4 Multi-level converters..................................................................................... 35

A.5 STATCOMs based on controllable voltage source type valve ................................ 36

A.6 Valve switching principles ..................................................................................... 37

Annex B (informative) Valve component fault tolerance........................................................ 39

Bibliography .......................................................................................................................... 40

Figure A.1 – STATCOM U-I characteristics ........................................................................... 33

Figure A.2 – Two-level converter .......................................................................................... 34

Figure A.3 – Three-level NPC converter ................................................................................ 35

Figure A.4 – Three-level flying capacitor converter ............................................................... 35

Figure A.5 – Modular multilevel converter ............................................................................. 36

Figure A.6 – Single-phase full-bridge converter..................................................................... 37

Figure A.7 – Two-level converter output voltage ................................................................... 37

Figure A.8 – Output voltage shape of three-level converter and modular multi-level

converter .............................................................................................................................. 38

Table 1 – Minimum number of valve levels to be tested as a function of the number of

valve levels per valve ............................................................................................................ 12

Table 2 – Valve level faults permitted during type tests ......................................................... 14

Table 3 – List of type tests .................................................................................................... 15

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SIST EN 62927:2018
IEC 62927:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VOLTAGE SOURCED CONVERTER (VSC) VALVES FOR STATIC
SYNCHRONOUS COMPENSATOR (STATCOM) –
ELECTRICAL TESTING
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC

Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

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

International Standard IEC 62927 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 International Standard is based on the following documents:
CDV Report on voting
22F/412/CDV 22F/431A/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 11 ----------------------
SIST EN 62927:2018
– 6 – IEC 62927:2017 © IEC 2017

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://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.
A bilingual version of this publication may be issued at a later date.

The contents of the corrigendum of December 2017 have been included in this copy.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 12 ----------------------
SIST EN 62927:2018
IEC 62927:2017 © IEC 2017 – 7 –
VOLTAGE SOURCED CONVERTER (VSC) VALVES FOR STATIC
SYNCHRONOUS COMPENSATOR (STATCOM) –
ELECTRICAL TESTING
1 Scope

This document applies to self-commutated valves, for use in voltage sourced converter (VSC)

for static synchronous compensator (STATCOM). It is restricted to electrical type and

production tests.

The tests specified in this document are based on air insulated valves. For other types of

valves, the test requirements and acceptance criteria are agreed between the purchaser and

the supplier.
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 60060 (all parts), High-voltage test techniques

IEC 60060-1, High-voltage test techniques – Part 1: General definitions and test requirements

IEC 60071-1:2006, Insulation co-ordination – Part 1: Definitions, principles and rules

IEC 60700-1:2015, Thyristor valves for high voltage direct current (HVDC) power transmission

– Part 1: Electrical testing

IEC 62501, Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC)

power transmission – Electrical testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Insulation co-ordination terms
3.1.1
test withstand voltage

value of a test voltage of standard waveshape at which a new valve, with unimpaired integrity,

does not show any disruptive discharge and meets all other acceptance criteria specified for

the particular test, when subjected to a specified number of applications or a specified

duration of the test voltage, under specified conditions
---------------------- Page: 13 ----------------------
SIST EN 62927:2018
– 8 – IEC 62927:2017 © IEC 2017
3.1.2
internal insulation

air external to the components and insulating materials of the valve, but contained within the

profile of the valve or multiple valve unit
3.1.3
external insulation

air between the external surface of the valve or multiple valve unit and its surroundings

3.2 Power semiconductor terms
3.2.1
turn-off semiconductor device

controllable semiconductor device which may be turned on and off by a control signal, for

example an IGBT

Note 1 to entry: There are several types of turn-off semiconductor devices, for example IGBT, IGCT and GTO,

which can be used in voltage sourced converters for STATCOM. For convenience, the term IGBT is used

throughout this document to refer to the main, controllable turn-off, semiconductor device. However, this document

is equally applicable to other types of controllable semiconductor switch device.

3.2.2
gate turn-off thyristor
GTO thyristor
turn-off semiconductor device which can be turned on and off by its gate lead

Note 1 to entry: A GTO thyristor is a special type of thyristor, which is a high-power semiconductor device.

Note 2 to entry: Gate commutated thyristor (GCT) and integrated gate commutated thyristor (IGCT) are special

types of GTO thyristor.
3.2.3
insulated gate bipolar transistor
IGBT

transistor provided for power switching having a conduction channel and a PN junction and in

which the current flowing through the channel and the junction is controlled by an electric field

resulting from a voltage applied between the gate and emitter terminals
3.2.4
free-wheeling diode
FWD
power semiconductor device with diode character
...

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