SIST EN IEC 61954:2022
(Main)Static var compensators (SVC) - Testing of thyristor valves (IEC 61954:2021)
Static var compensators (SVC) - Testing of thyristor valves (IEC 61954:2021)
This International Standard defines type, production and optional tests on thyristor valves used in thyristor controlled reactors (TCR), thyristor switched reactors (TSR) and thyristor switched capacitors (TSC) forming part of static VAR compensators (SVC) for power system applications. The requirements of the standard apply both to single valve units (one phase) and to multiple valve units (several phases).
Clauses 4 to 7 detail the type tests, i.e. tests which are carried out to verify that the valve design meets the requirements specified. Clause 8 covers the production tests, i.e. tests which are carried out to verify proper manufacturing. Clauses 9 and 10 detail optional tests, i.e. tests additional to the type and production tests.
Statische Blindleistungskompensatoren (SVC) - Prüfung von Thyristorventilen (IEC 61954:2021)
Compensateurs statiques de puissance réactive (SVC) - Essais des valves à thyristors (IEC 61954:2021)
IEC 61954:2021 est disponible sous forme de IEC 61954:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 61954:2021 définit les essais de type, les essais de production et les essais facultatifs des valves à thyristors utilisées dans les bobines d'inductance commandées par thyristors (TCR - thyristor controlled reactor), les bobines d'inductance commutées par thyristors (TSR - thyristor switched reactor) et les condensateurs commutés par thyristors (TSC - thyristor switched capacitor) qui font partie des compensateurs statiques de puissance réactive (SVC - static VAR compensator) pour des applications de système de puissance. Les exigences du présent document s'appliquent tant aux unités à valve unique (monophasées) qu'aux unités à valves multiples (polyphasées). Les Articles 4 à 7 décrivent les essais de type, c’est-à-dire les essais effectués pour assurer que la conception des valves satisfait aux exigences spécifiées. L’Article 8 traite des essais de production, c'est-à-dire les essais effectués pour assurer que la fabrication est correcte. Les Articles 9 et 10 décrivent des essais facultatifs, c’est-à-dire des essais supplémentaires aux essais de type et de production. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: d’importantes clarifications ont été apportées en 4.4.1.2, 5.1.2.2, 5.1.3.2, 5.2.3.2, 6.1.2.2, 6.1.2.4, 6.1.3.2, 6.2.2.2, 6.2.2.4, 6.3.2.2 et 9.3.2.
Statični kompenzatorji jalove energije (var) - Preskušanje tiristorskih ventilov (IEC 61954:2021)
Ta mednarodni standard opredeljuje tip, proizvodnjo in neobvezne preskuse tiristorskih ventilov, ki se uporabljajo v tiristorskih krmiljenih reaktorjih (TCR), tiristorskih preklopnih reaktorjih (TSR) in tiristorskih preklopnih kondenzatorjih (TSC), ki so del statičnih kompenzatorjev jalove energije (SVC) za aplikacije elektroenergetskega sistema. Zahteve standarda veljajo tako za enote z enim ventilom (ena faza) kot za enote z več ventili (več faz).
V točkah od 4 do 7 so podrobno opisani tipski preskusi, tj. preskusi, v katerih se preverja, ali zasnova ventila izpolnjuje določene zahteve. V točki 8 so navedeni proizvodni preskusi, tj. preskusi, s katerimi se preverja pravilna proizvodnja. V točkah 9 in 10 so podrobno opisani neobvezni preskusi, tj. preskusi, ki jih je mogoče izvesti poleg tipskih in proizvodnih preskusov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 61954:2022
01-marec-2022
Nadomešča:
SIST EN 61954:2011
SIST EN 61954:2011/A1:2016
SIST EN 61954:2011/A2:2018
Statični kompenzatorji jalove energije (var) - Preskušanje tiristorskih ventilov (IEC
61954:2021)
Static var compensators (SVC) - Testing of thyristor valves (IEC 61954:2021)
Statische Blindleistungskompensatoren (SVC) - Prüfung von Thyristorventilen (IEC
61954:2021)
Compensateurs statiques de puissance réactive (SVC) - Essais des valves à thyristors
(IEC 61954:2021)
Ta slovenski standard je istoveten z: EN IEC 61954:2021
ICS:
29.240.99 Druga oprema v zvezi z Other equipment related to
omrežji za prenos in power transmission and
distribucijo električne energije distribution networks
31.080.20 Tiristorji Thyristors
SIST EN IEC 61954:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 61954:2022
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SIST EN IEC 61954:2022
EUROPEAN STANDARD EN IEC 61954
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 29.240.99; 31.080.20 Supersedes EN 61954:2011 and all of its amendments
and corrigenda (if any)
English Version
Static VAR compensators (SVC) - Testing of thyristor valves
(IEC 61954:2021)
Compensateurs statiques de puissance réactive (SVC) - Statische Blindleistungskompensatoren (SVC) - Prüfung
Essais des valves à thyristors von Thyristorventilen
(IEC 61954:2021) (IEC 61954:2021)
This European Standard was approved by CENELEC on 2021-11-08. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61954:2021 E
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SIST EN IEC 61954:2022
EN IEC 61954:2021 (E)
European foreword
The text of document 22F/642/FDIS, future edition 3 of IEC 61954, 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 IEC 61954:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–08–08
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–11–08
document have to be withdrawn
This document supersedes EN 61954:2011 and all of its amendments and corrigenda (if any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61954:2021 was approved by CENELEC as a European
Standard without any modification.
2
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SIST EN IEC 61954:2022
EN IEC 61954:2021 (E)
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 Where 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 EN 60060 series
IEC 60060-1 2010 High-voltage test techniques - Part 1: EN 60060-1 2010
General definitions and test requirements
IEC 60060-2 - High-voltage test techniques - Part 2: EN 60060-2 -
Measuring systems
IEC 60071 series Insulation co-ordination EN IEC 60071 series
IEC 60071-1 2019 Insulation co-ordination - Part 1: EN IEC 60071-1 2019
Definitions, principles and rules
IEC 60270 - High-voltage test techniques - Partial EN 60270 -
discharge measurements
IEC 60700-1 2015 Thyristor valves for high voltage direct EN 60700-1 2015
current (HVDC) power transmission - Part
1: Electrical testing
3
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SIST EN IEC 61954:2022
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SIST EN IEC 61954:2022
IEC 61954
®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Static VAR compensators (SVC) – Testing of thyristor valves
Compensateurs statiques de puissance réactive (SVC) – Essais des valves à
thyristors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.240.99; 31.080.20 ISBN 978-2-8322-1033-1
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
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SIST EN IEC 61954:2022
– 2 – IEC 61954:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 7
4 General requirements for type, production and optional tests . 9
4.1 Summary of tests . 9
4.2 Objectives of tests . 10
4.2.1 General . 10
4.2.2 Dielectric tests . 10
4.2.3 Operational tests . 10
4.2.4 Electromagnetic interference tests . 11
4.2.5 Production tests . 11
4.2.6 Optional tests. 11
4.3 Guidelines for the performance of type and optional tests . 11
4.4 Test conditions . 12
4.4.1 General . 12
4.4.2 Valve temperature at testing . 13
4.4.3 Redundant thyristor levels . 13
4.5 Permissible component failures during type testing . 14
4.6 Documentation of test results . 14
4.6.1 Test reports to be issued . 14
4.6.2 Contents of a type test report . 15
5 Type tests on TCR and TSR valves . 15
5.1 Dielectric tests between valve terminals and earth . 15
5.1.1 General . 15
5.1.2 AC test . 16
5.1.3 Lightning impulse test . 16
5.2 Dielectric tests between valves (MVU only) . 17
5.2.1 General . 17
5.2.2 AC test . 17
5.2.3 Lightning impulse test . 18
5.3 Dielectric tests between valve terminals . 18
5.3.1 General . 18
5.3.2 AC test . 18
5.3.3 Switching impulse test . 20
5.4 Operational tests . 21
5.4.1 Periodic firing and extinction test . 21
5.4.2 Minimum AC voltage test . 22
5.4.3 Temperature rise test . 23
6 Type tests on TSC valves . 23
6.1 Dielectric tests between valve terminals and earth . 23
6.1.1 General . 23
6.1.2 AC-DC test . 24
6.1.3 Lightning impulse test . 25
6.2 Dielectric tests between valves (for MVU only) . 26
6.2.1 General . 26
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SIST EN IEC 61954:2022
IEC 61954:2021 © IEC 2021 – 3 –
6.2.2 AC-DC test . 26
6.2.3 Lightning impulse test . 28
6.3 Dielectric tests between valve terminals . 28
6.3.1 General . 28
6.3.2 AC-DC test . 28
6.3.3 Switching impulse test . 30
6.4 Operational tests . 31
6.4.1 Overcurrent tests . 31
6.4.2 Minimum AC voltage test . 35
6.4.3 Temperature rise test . 36
7 Electromagnetic interference tests . 36
7.1 Objectives . 36
7.2 Test procedures . 36
7.2.1 General . 36
7.2.2 Switching impulse test . 37
7.2.3 Non-periodic firing test . 37
8 Production tests . 37
8.1 General . 37
8.2 Visual inspection . 37
8.3 Connection check . 37
8.4 Voltage-dividing/damping circuit check . 38
8.5 Voltage withstand check . 38
8.6 Check of auxiliaries . 38
8.7 Firing check . 38
8.8 Cooling system pressure test . 38
8.9 Partial discharge tests . 38
9 Optional tests on TCR and TSR valves . 38
9.1 Overcurrent test . 38
9.1.1 Overcurrent with subsequent blocking . 38
9.1.2 Overcurrent without blocking . 39
9.2 Positive voltage transient during recovery test . 39
9.2.1 Objectives . 39
9.2.2 Test values and waveshapes . 39
9.2.3 Test procedures . 40
9.3 Non-periodic firing test . 40
9.3.1 Objectives . 40
9.3.2 Test values and waveshapes . 40
9.3.3 Test procedures . 41
10 Optional tests on TSC valves . 42
10.1 Positive voltage transient during recovery test . 42
10.1.1 Test objective . 42
10.1.2 Test values and waveshapes . 42
10.1.3 Test procedures . 42
10.2 Non-periodic firing test . 42
10.2.1 Objectives . 42
10.2.2 Test values and waveshapes . 43
10.2.3 Test procedures . 44
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SIST EN IEC 61954:2022
– 4 – IEC 61954:2021 © IEC 2021
Figure 1 – TSC branch . 33
Figure 2 – One-loop overcurrent . 34
Figure 3 – Two-loop overcurrent . 35
Table 1 – List of tests . 9
Table 2 – Number of thyristor levels permitted to fail during type tests . 15
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SIST EN IEC 61954:2022
IEC 61954:2021 © IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
STATIC VAR COMPENSATORS (SVC) –
TESTING OF THYRISTOR VALVES
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 61954 has been prepared by subcommittee 22F: Power electronics
for electrical transmission and distribution systems, of IEC technical committee 22: Power
electronic systems and equipment.
This third edition cancels and replaces the second edition published in 2011,
Amendment 1:2013 and Amendment 2:2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition: important clarifications were made in 4.4.1.2, 5.1.2.2, 5.1.3.2, 5.2.3.2, 6.1.2.2,
6.1.2.4, 6.1.3.2, 6.2.2.2, 6.2.2.4, 6.3.2.2 and 9.3.2.
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SIST EN IEC 61954:2022
– 6 – IEC 61954:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
22F/642/FDIS 22F/658/RVD
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.
The language used for the development of this International Standard is English.
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/standardsdev/publications.
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.
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SIST EN IEC 61954:2022
IEC 61954:2021 © IEC 2021 – 7 –
STATIC VAR COMPENSATORS (SVC) –
TESTING OF THYRISTOR VALVES
1 Scope
This document defines type, production and optional tests on thyristor valves used in thyristor
controlled reactors (TCR), thyristor switched reactors (TSR) and thyristor switched capacitors
(TSC) forming part of static VAR compensators (SVC) for power system applications. The
requirements of the document apply both to single valve units (one phase) and to multiple
valve units (several phases).
Clauses 4 to 7 detail the type tests, i.e. tests which are carried out to verify that the valve
design meets the requirements specified. Clause 8 covers the production tests, i.e. tests
which are carried out to verify proper manufacturing. Clauses 9 and 10 detail optional tests,
i.e. tests additional to the type and production tests.
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 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60060-2, High-voltage test techniques – Part 2: Measuring systems
IEC 60071 (all parts), Insulation co-ordination
IEC 60071-1:2019, Insulation co-ordination – Part 1: Definitions, principles and rules
IEC 60270, High-voltage test techniques – Partial discharge measurements
IEC 60700-1:2015, Thyristor valves for high-voltage direct current (HVDC) power transmission
– Part 1: 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
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SIST EN IEC 61954:2022
– 8 – IEC 61954:2021 © IEC 2021
3.1
thyristor level
part of a thyristor valve comprising a thyristor, or thyristors connected in parallel or anti-
parallel, together with their immediate auxiliaries and reactor, if any
3.2
thyristor (series) string
series connected thyristors forming one direction of a thyristor valve
3.3
valve reactor
reactor incorporated within some valves for limitation of stresses
Note 1 to entry: For testing purposes it is considered an integral part of the valve.
3.4
valve section
electrical assembly, comprising a number of thyristors and other components, which exhibits
pro-rated electrical properties of a complete thyristor valve, but only a portion of the full
voltage blocking capability of the thyristor valve, and which can be used for tests
3.5
thyristor valve
electrically and mechanically combined assembly of thyristor levels, complete with all
connections, auxiliary components and mechanical structures, which can be connected in
series with each phase of the reactor or capacitor of an SVC
3.6
valve structure
physical structure which insulates the valves to the appropriate level above earth potential
and from each other
3.7
valve base electronics
VBE
electronic unit, at earth potential, which is the interface between the control system of the
SVC and the thyristor valves
3.8
multiple valve unit
MVU
assembly of several valves in the same physical structure which cannot be separated for test
purposes (e.g. three-phase valves)
3.9
redundant thyristor levels
maximum number of thyristor levels in the thyristor valve that may be short-circuited,
externally or internally, during service without affecting the safe operation of the thyristor
valve as demonstrated by type tests; and which if and when exceeded, would require either
the shutdown of the thyristor valve to replace the failed thyristors, or the acceptance of
increased risk of failures
3.10
voltage breakover (VBO) protection
means of protecting the thyristors from excessive voltage by firing them at a predetermined
voltage
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SIST EN IEC 61954:2022
IEC 61954:2021 © IEC 2021 – 9 –
4 General requirements for type, production and optional tests
4.1 Summary of tests
Table 1 lists the tests given in the following clauses and subclauses.
Table 1 – List of tests
Test Subclause Test object
TCR/TSR TSC
Dielectric tests between valve terminals and earth (type tests)
AC test 5.1.2 Valve
AC-DC test 6.1.2 Valve
Lightning impulse test 5.1.3 6.1.3 Valve
Dielectric tests between valves (MVU only) (type tests)
AC test 5.2.2 MVU
AC-DC test 6.2.2 MVU
Lightning impulse test 5.2.3 6.2.3 MVU
Dielectric tests between valve terminals (type tests)
AC test 5.3.2 Valve
AC-DC test 6.3.2 Valve
Switching impulse test 5.3.3 6.3.3 Valve
Operational tests (type tests)
Periodic firing and extinction test 5.4.1 Valve or valve section
Overcurrent test 6.4.1 Valve or valve section
Minimum AC voltage test 5.4.2 6.4.2 Valve or valve section
Temperature rise test 5.4.3 6.4.3 Valve or valve section
Electromagnetic interference tests (type tests)
Switching impulse test 7.2.2 7.2.2 Valve
Non-periodic firing test 7.2.3 7.2.3 Valve
Production tests
Visual inspection 8.2 8.2
Connection check 8.3 8.3
Voltage dividing/damping circuit check 8.4 8.4
Voltage withstand check 8.5 8.5
Check of auxiliaries 8.6 8.6
Firing check 8.7 8.7
Cooling system pressure test 8.8 8.8
P
...
SLOVENSKI STANDARD
oSIST prEN IEC 61954:2021
01-april-2021
Statični kompenzatorji jalove energije (var) - Preskušanje tiristorskih elektronk
Static var compensators (SVC) - Testing of thyristor valves
Compensateurs statiques de puissance réactive (SVC) - Essais des valves à thyristors
Ta slovenski standard je istoveten z: prEN IEC 61954:2021
ICS:
29.240.99 Druga oprema v zvezi z Other equipment related to
omrežji za prenos in power transmission and
distribucijo električne energije distribution networks
31.080.20 Tiristorji Thyristors
oSIST prEN IEC 61954:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 61954:2021
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oSIST prEN IEC 61954:2021
22F/608/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61954 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-02-05 2021-04-30
SUPERSEDES DOCUMENTS:
22F/589/CD, 22F/600/CC
IEC SC 22F : POWER ELECTRONICS FOR ELECTRICAL TRANSMISSION AND DISTRIBUTION SYSTEMS
SECRETARIAT: SECRETARY:
Russian Federation Mr Lev Travin
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 115
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.
TITLE:
Static var compensators (SVC) - Testing of thyristor valves
PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
As the plenary meeting of SC 22F was cancelled in 2020 due to COVID-19 pandemiс (see 22F/591/INF),
comments and proposals of National Committees on 22F/589/CD contained in 22F/600/CC were discussed by
correspondence by a group consisting of Mr. Huigao Zhou, the Chair of SC 22F, Mr. Lev Travin, SC 22F
secretary, Mr. Marcio de Oliveira, the convenor of SC 22F/MT 10 and MT 10 members.
The decision to develop the current CDV, based on the results of this discussion was taken by Mr. Huigao
Zhou, the Chair of SC 22F (supported by Mr. Lev Travin, SC 22F secretary).
Copyright © 2020 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee
positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose
without permission in writing from IEC.
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1 CONTENTS
2 CONTENTS . - 2 -
3 FOREWORD . - 5 -
4 1 Scope . - 7 -
5 2 Normative references . - 7 -
6 3 Terms and definitions . - 7 -
7 4 General requirements for type, production and optional tests . - 9 -
8 4.1 Summary of tests . - 9 -
9 4.2 Objectives of tests . - 10 -
10 4.2.1 General . - 10 -
11 4.2.2 Dielectric tests . - 10 -
12 4.2.3 Operational tests . - 10 -
13 4.2.4 Electromagnetic interference tests . - 11 -
14 4.2.5 Production tests . - 11 -
15 4.2.6 Optional tests . - 11 -
16 4.3 Guidelines for the performance of type and optional tests . - 11 -
17 4.4 Test conditions . - 11 -
18 4.4.1 General . - 11 -
19 4.4.2 Valve temperature at testing. - 13 -
20 4.4.3 Redundant thyristor levels . - 13 -
21 4.5 Permissible component failures during type testing . - 14 -
22 4.6 Documentation of test results . - 14 -
23 4.6.1 Test reports to be issued . - 14 -
24 4.6.2 Contents of a type test report . - 14 -
25 5 Type tests on TCR and TSR valves . - 15 -
26 5.1 Dielectric tests between valve terminals and earth . - 15 -
27 5.1.1 General . - 15 -
28 5.1.2 AC test . - 15 -
29 5.1.3 Lightning impulse test . - 16 -
30 5.2 Dielectric tests between valves (MVU only) . - 16 -
31 5.2.1 General . - 16 -
32 5.2.2 AC test . - 17 -
33 5.2.3 Lightning impulse test . - 17 -
34 5.3 Dielectric tests between valve terminals . - 18 -
35 5.3.1 General . - 18 -
36 5.3.2 AC test . - 18 -
37 5.3.3 Switching impulse test . - 19 -
38 5.4 Operational tests . - 21 -
39 5.4.1 Periodic firing and extinction test . - 21 -
40 5.4.2 Minimum a.c. voltage test . - 22 -
41 5.4.3 Temperature rise test . - 23 -
42 6 Type tests on TSC valves. - 23 -
43 6.1 Dielectric tests between valve terminals and earth . - 23 -
44 6.1.1 General . - 23 -
45 6.1.2 AC-DC test . - 23 -
46 6.1.3 Lightning impulse test . - 25 -
47 6.2 Dielectric tests between valves (for MVU only) . - 26 -
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48 6.2.1 General . - 26 -
49 6.2.2 AC-DC test . - 26 -
50 6.2.3 Lightning impulse test . - 28 -
51 6.3 Dielectric tests between valve terminals . - 28 -
52 6.3.1 General . - 28 -
53 6.3.2 AC-DC test . - 28 -
54 6.3.3 Switching impulse test . - 30 -
55 6.4 Operational tests . - 31 -
56 6.4.1 Overcurrent tests . - 31 -
57 6.4.2 Minimum a.c. voltage test . - 34 -
58 6.4.3 Temperature rise test . - 35 -
59 7 Electromagnetic interference tests . - 35 -
60 7.1 Objectives . - 35 -
61 7.2 Test procedures . - 35 -
62 7.2.1 General . - 35 -
63 7.2.2 Switching impulse test . - 36 -
64 7.2.3 Non-periodic firing test . - 36 -
65 8 Production tests . - 36 -
66 8.1 General . - 36 -
67 8.2 Visual inspection . - 36 -
68 8.3 Connection check . - 36 -
69 8.4 Voltage-dividing/damping circuit check . - 37 -
70 8.5 Voltage withstand check . - 37 -
71 8.6 Check of auxiliaries . - 37 -
72 8.7 Firing check . - 37 -
73 8.8 Cooling system pressure test. - 37 -
74 8.9 Partial discharge tests . - 37 -
75 9 Optional tests on TCR and TSR valves . - 37 -
76 9.1 Overcurrent test . - 37 -
77 9.1.1 Overcurrent with subsequent blocking . - 37 -
78 9.1.2 Overcurrent without blocking . - 38 -
79 9.2 Positive voltage transient during recovery test . - 38 -
80 9.2.1 Objectives . - 38 -
81 9.2.2 Test values and waveshapes. - 38 -
82 9.2.3 Test procedures . - 39 -
83 9.3 Non-periodic firing test . - 39 -
84 9.3.1 Objectives . - 39 -
85 9.3.2 Test values and waveshapes. - 39 -
86 9.3.3 Test procedures . - 41 -
87 10 Optional tests on TSC valves . - 41 -
88 10.1 Positive voltage transient during recovery test . - 41 -
89 10.1.1 Test objective . - 41 -
90 10.1.2 Test values and waveshapes. - 41 -
91 10.1.3 Test procedures . - 41 -
92 10.2 Non-periodic firing test . - 42 -
93 10.2.1 Objectives . - 42 -
94 10.2.2 Test values and waveshapes. - 42 -
95 10.2.3 Test procedures . - 43 -
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96
97 Figure 1 – TSC branch . - 32 -
98 Figure 2 – One-loop overcurrent . - 33 -
99 Figure 3 – Two-loop overcurrent . - 34 -
100
101 Table 1 – List of tests . - 9 -
102 Table 2 – Number of thyristor levels permitted to fail during type tests . - 14 -
103
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104 INTERNATIONAL ELECTROTECHNICAL COMMISSION
105
106 ____________
107
108 STATIC VAR COMPENSATORS (SVC) –
109 TESTING OF THYRISTOR VALVES
110
111 FOREWORD
112 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
113 national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-
114 operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to
115 other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available
116 Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical
117 committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work.
118 International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation.
119 IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions
120 determined by agreement between the two organizations.
121 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
122 consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC
123 National Committees.
124 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in
125 that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC
126 cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.
127 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to
128 the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and
129 the corresponding national or regional publication shall be clearly indicated in the latter.
130 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment
131 services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by
132 independent certification bodies.
133 6) All users should ensure that they have the latest edition of this publication.
134 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of
135 its technical committees and IEC National Committees for any personal injury, property damage or other damage of any
136 nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the
137 publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
138 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
139 indispensable for the correct application of this publication.
140 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights.
141 IEC shall not be held responsible for identifying any or all such patent rights.
142 International Standard IEC 61954 has been prepared by subcommittee 22F: POWER ELECTRONICS
143 FOR ELECTRICAL TRANSMISSION AND DISTRIBUTION SYSTEMS, of IEC technical committee 22:
144 POWER ELECTRONIC SYSTEMS AND EQUIPMENT.
145 This third edition cancels and replaces the second edition published in 2011-04 [documents
146 22F/217/CDV and 22F/231A/RVC], Amendment 1:2013-04 [documents 22F/274/CDV and
147 22F/287A/RVC] and Amendment 2:2017-04 [documents 22F/409/CDV and 22F/418A/RVC]. The
148 technical content is identical to the base edition and its amendments This edition constitutes a
149 technical revision.
150 This edition includes the following significant technical changes with respect to the previous edition -
151 important clarifications were made in 4.4.1.2, 5.1.2.2, 5.1.3.2, 5.2.3.2, 6.1.3.2 and 9.3.2
152 The text of this International Standard is based on the following documents:
FDIS Report on voting
22F/XX/FDIS 22F/XX/RVD
153
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154 Full information on the voting for the approval of this International Standard can be found in the report
155 on voting indicated in the above table.
156 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
157 The committee has decided that the contents of this document will remain unchanged until the stability
158 date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the specific
159 document. At this date, the document will be
160 • reconfirmed,
161 • withdrawn,
162 • replaced by a revised edition, or
163 • amended.
164
165
166
167
168
169
170
171
172
173
174
175
176
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177 STATIC VAR COMPENSATORS (SVC) –
178 TESTING OF THYRISTOR VALVES
179
180
181
182 1 Scope
183 This International Standard defines type, production and optional tests on thyristor valves used in
184 thyristor controlled reactors (TCR), thyristor switched reactors (TSR) and thyristor switched capacitors
185 (TSC) forming part of static VAR compensators (SVC) for power system applications. The
186 requirements of the standard apply both to single valve units (one phase) and to multiple valve units
187 (several phases).
188 Clauses 4 to 7 detail the type tests, i.e. tests which are carried out to verify that the valve design
189 meets the requirements specified. Clause 8 covers the production tests, i.e. tests which are carried out
190 to verify proper manufacturing. Clauses 9 and 10 detail optional tests, i.e. tests additional to the type
191 and production tests.
192 2 Normative references
193 The following referenced documents are indispensable for the application of this document. For dated
194 references, only the edition cited applies. For undated references, the latest edition of the referenced
195 document (including any amendments) applies.
196 IEC 60060 (all parts), High-voltage test techniques
197 IEC 60060-1, High-voltage test techniques – Part 1: General definitions and test requirements
198 IEC 60060-2, High-voltage test techniques – Part 2: Measuring systems
199 IEC 60071 (all parts), Insulation co-ordination
200 IEC 60071-1, Insulation co-ordination – Part 1: Definitions, principles and rules
201 IEC 60270, High-voltage test techniques – Partial discharge measurements
202 IEC 60700-1, Thyristor valves for high-voltage direct current (HVDC) power transmission – Part 1:
203 Electrical testing
204 3 Terms and definitions
205 For the purposes of this document, the following terms and definitions apply:
206 3.1
207 thyristor level
208 part of a thyristor valve comprising a thyristor, or thyristors connected in parallel or antiparallel,
209 together with their immediate auxiliaries and reactor, if any
210 3.2
211 thyristor (series) string
212 series connected thyristors forming one direction of a thyristor valve
213 3.3
214 valve reactor
215 reactor incorporated within some valves for limitation of stresses
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216 NOTE For testing purposes it is considered an integral part of the valve.
217 3.4
218 valve section
219 electrical assembly, comprising a number of thyristors and other components, which exhibits pro-rated
220 electrical properties of a complete thyristor valve but only a portion of the full voltage blocking
221 capability of the thyristor valve and which can be used for tests
222 3.5
223 thyristor valve
224 electrically and mechanically combined assembly of thyristor levels, complete with all connections,
225 auxiliary components and mechanical structures, which can be connected in series with each phase of
226 the reactor or capacitor of an SVC
227 3.6
228 valve structure
229 physical structure which insulates the valves to the appropriate level above earth potential and from
230 each other
231 3.7
232 valve base electronics
233 VBE
234 electronic unit, at earth potential, which is the interface between the control system of the SVC and the
235 thyristor valves
236 3.8
237 multiple valve unit
238 MVU
239 assembly of several valves in the same physical structure which cannot be separated for test purposes
240 (e.g. three-phase valves)
241 3.9
242 redundant thyristor levels
243 the maximum number of thyristor levels in the thyristor valve that may be short-circuited, externally or
244 internally, during service without affecting the safe operation of the thyristor valve as demonstrated by
245 type tests; and which if and when exceeded, would require either the shutdown of the thyristor valve to
246 replace the failed thyristors, or the acceptance of increased risk of failures
247 3.10
248 voltage breakover (VBO) protection
249 means of protecting the thyristors from excessive voltage by firing them at a predetermined voltage
250
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251 4 General requirements for type, production and optional tests
252 4.1 Summary of tests
253 Table 1 lists the tests given in the following clauses and subclauses.
254 Table 1 – List of tests
Test Clause or subclause Test object
TCR/TSR TSC
Dielectric tests between valve terminals and earth (type tests)
AC test 5.1.2 Valve
AC-DC test 6.1.2 Valve
Lightning impulse test 5.1.3 6.1.3 Valve
Dielectric tests between valves (MVU only) (type tests)
AC test 5.2.2 MVU
AC-DC test 6.2.2 MVU
Lightning impulse test 5.2.3 6.2.3 MVU
Dielectric tests between valve terminals (type tests)
AC test 5.3.2 Valve
AC-DC test 6.3.2 Valve
Switching impulse test 5.3.3 6.3.3 Valve
Operational tests (type tests)
Periodic firing and extinction test 5.4.1 Valve or valve section
Overcurrent test 6.4.1 Valve or valve section
Minimum a.c. voltage test 5.4.2 6.4.2 Valve or valve section
Temperature rise test 5.4.3 6.4.3 Valve or valve section
Electromagnetic interference tests (type tests)
Switching impulse test 7.2.2 7.2.2 Valve
Non-periodic firing test 7.2.3 7.2.3 Valve
Production tests
Visual inspection 8.2 8.2
Connection check 8.3 8.3
Voltage dividing/damping circuit check 8.4 8.4
Voltage withstand check 8.5 8.5
Check of auxiliaries 8.6 8.6
Firing check 8.7 8.7
Cooling system pressure test 8.8 8.8
Partial discharge tests 8.9 8.9
Optional tests
Overcurrent test 9.1 Valve or valve section
Positive voltage transient during recovery test 9.2 10.1 Valve or valve section
Non-periodic firing test 9.3 10.2 Valve or valve section
255
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256 4.2 Objectives of tests
257 4.2.1 General
258 The tests described apply to the valve (or valve sections), the valve structure and those parts of the
259 coolant distribution system and firing and monitoring circuits which are contained within the valve
260 structure or connected between the valve structure and earth. Other equipment, such as valve control
261 and protection and valve base electronics may be essential for demonstrating the correct function of
262 the valve during the tests but are not in themselves the subject of the tests.
263 4.2.2 Dielectric tests
264 4.2.2.1 General
265 Tests for the following dielectric stresses are specified:
266 – a.c. voltage;
267 – combined a.c. and d.c. voltage (TSC only);
268 – impulse voltages.
269 In the interest of standardization with other equipment, lightning impulse tests between valve terminals
270 and earth and between phases of an MVU are included. For tests between valve terminals, the only
271 impulse test specified is a switching impulse.
272 4.2.2.2 Tests on valve structure
273 Tests are defined for the voltage withstand requirements between a valve (with its terminals short-
274 circuited) and earth, and also between valves for MVU. The tests shall demonstrate that
275 – sufficient clearances have been provided to prevent flashovers;
276 – there is no disruptive discharge in the insulation of the valve structure, cooling ducts, light guides
277 and other insulation parts of the pulse transmission and distribution systems;
278 – partial discharge inception and extinction voltages under a.c. and d.c. conditions are above the
279 maximum steady-state operating voltage appearing on the valve structure.
280 4.2.2.3 Tests between valve terminals
281 The purpose of these tests is to verify the design of the valve with respect to its capability to withstand
282 overvoltages between its terminals. The tests shall demonstrate that
283 – sufficient internal insulation has been provided to enable t
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