SIST EN 61954:2011

SLOVENSKI STANDARD
SIST EN 61954:2011
01-september-2011
6WDWLþQLNRPSHQ]DWRUMLMDORYHHQHUJLMHYDU3UHVNXãDQMHWLULVWRUVNLKHOHNWURQN
Static VAR compensators (SVC) - Testing of thyristor valves
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: EN 61954:2011
ICS:
29.240.99 'UXJDRSUHPDY]YH]L] Other equipment related to
RPUHåML]DSUHQRVLQ power transmission and
GLVWULEXFLMRHOHNWULþQHHQHUJLMH distribution networks
31.080.20 Tiristorji Thyristors
SIST EN 61954:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61954:2011

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SIST EN 61954:2011

EUROPEAN STANDARD
EN 61954

NORME EUROPÉENNE
June 2011
EUROPÄISCHE NORM

ICS 29.240.99; 31.080.20 Supersedes EN 61954:1999 + A1:2003


English version


Static VAR compensators (SVC) -
Testing of thyristor valves
(IEC 61954:2011)


Compensateurs statiques de puissance Static VAR compensators (SVC) -
réactive (SVC) - Testing of thyristor valves
Essais des valves à thyristors (IEC 61954:2011)
(CEI 61954:2011)




This European Standard was approved by CENELEC on 2011-05-26. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61954:2011 E

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SIST EN 61954:2011
EN 61954:2011 - 2 -
Foreword
The text of document 22F/217/CDV, future edition 2 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 was approved by CENELEC as
EN 61954 on 2011-05-26.
This European Standard supersedes EN 61954:1999 + A1:2003.
EN 61954 :2011 includes the following significant technical changes with respect to
EN 61954:1999 + A1:2003:
a) Definitions of terms “thyristor level”, “valve section”, “valve base electronics” and ”redundant thyristor
levels” have been changed for clarification.
b) Conditions of testing thyristor valve sections instead of a complete thyristor valve have been defined.
c) The requirement has been added that if, following a type test, one thyristor level has become short-
circuited, then the failed level shall be restored and this type test repeated.
d) The time period of increasing the initial test voltage from 50 % to 100 % during type a.c. dielectric tests
on TSC, TCR or TSR valves has been set equal to approximately 10 s.
e) The duration of test voltage Uts2 during type a.c.-d.c. dielectric tests between TSC valve terminals and
earth as well as the duration of test voltage Utvv2 during dielectric tests between TSC valves (for MVU
only) has been changed from 30 min to 3 h.
f) The reference on the number of pulses per minute of the periodic partial discharge recorded during
a.c.-d.c. dielectric tests on TSC valves and exceeding the permissible level has been deleted.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-02-26
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-05-26
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61954:2011 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 61954:2011
- 3 - EN 61954:2011
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 60060 Series High-voltage test techniques EN 60060 Series

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


IEC 60060-2 - High-voltage test techniques - EN 60060-2 -
Part 2: Measuring systems


IEC 60071 Series Insulation co-ordination EN 60071 Series

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


IEC 60270 - High-voltage test techniques - Partial EN 60270 -
discharge measurements


IEC 60700-1 2008 Thyristor valves for high voltage direct current - -
(HVDC) power transmission –
Part 1: Electrical testing

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SIST EN 61954:2011

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SIST EN 61954:2011
IEC 61954
®

Edition 2.0 2011-04
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
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 29.240.99; 31.080.20 ISBN 978-2-88912-469-5

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61954:2011
– 2 – 61954  IEC:2011
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 a.c. 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 . 26
6.2 Dielectric tests between valves (for MVU only) . 26
6.2.1 General . 26
6.2.2 AC-DC test . 26

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SIST EN 61954:2011
61954  IEC:2011 – 3 –
6.2.3 Lightning impulse test . 28
6.3 Dielectric tests between valve terminals . 29
6.3.1 General . 29
6.3.2 AC-DC test . 29
6.3.3 Switching impulse test . 31
6.4 Operational tests . 32
6.4.1 Overcurrent tests . 32
6.4.2 Minimum a.c. 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 . 42
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 . 43
10.2.1 Objectives . 43
10.2.2 Test values and waveshapes . 43
10.2.3 Test procedures . 44

Figure 1 – TSC branch . 33

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SIST EN 61954:2011
– 4 – 61954  IEC:2011
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 61954:2011
61954  IEC:2011 – 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
electronics.
This second edition cancels and replaces the first edition published in 1999, amendment 1
(2003) and constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Definitions of terms “thyristor level”, “valve section”, “valve base electronics” and
“”redundant thyristor levels” have been changed for clarification.
b) Conditions of testing thyristor valve sections instead of a complete thyristor valve have
been defined.
c) The requirement has been added that if, following a type test, one thyristor level has
become short-circuited, then the failed level shall be restored and this type test repeated.
d) The time period of increasing the initial test voltage from 50 % to 100 % during type a.c.

dielectric tests on TSC, TCR or TSR valves has been set equal to approximately 10 s.

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SIST EN 61954:2011
– 6 – 61954  IEC:2011
e) The duration of test voltage U during type a.c.-d.c. dielectric tests between TSC valve

ts2
terminals and earth as well as the duration of test voltage U during dielectric tests
tvv2
between TSC valves (for MVU only) has been changed from 30 min to 3 h.
f) The reference on the number of pulses per minute of the periodic partial discharge
recorded during a.c.-d.c. dielectric tests on TSC valves and exceeding the permissible level
has been deleted.
The text of this standard is based on the following documents:
CDV Report on voting
22F/217/CDV 22F/231A/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 61954:2011
61954  IEC:2011 – 7 –
STATIC VAR COMPENSATORS (SVC) –
TESTING OF THYRISTOR VALVES



1 Scope
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.
2 Normative references
The following referenced documents are indispensable for the application 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 60060-2, High-voltage test techniques – Part 2: Measuring systems
IEC 60071 (all parts), Insulation co-ordination
IEC 60071-1:2006, Insulation co-ordination – Part 1: Definitions, principles and rules
IEC 60270, High-voltage test techniques – Partial discharge measurements
IEC 60700-1:2008, 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:
3.1
thyristor level
part of a thyristor valve comprising a thyristor, or thyristors connected in parallel or antiparallel,
together with their immediate auxiliaries and reactor, if any
3.2
thyristor (series) string
series connected thyristors forming one direction of a thyristor valve

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SIST EN 61954:2011
– 8 – 61954  IEC:2011
3.3
valve reactor
reactor incorporated within some valves for limitation of stresses
NOTE 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 a 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
the 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 61954:2011
61954  IEC:2011 – 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 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
...