SIST EN 60143-1:2004
(Main)Series capacitors for power systems -- Part 1: General
Series capacitors for power systems -- Part 1: General
Applies to both capacitor units and capacitor banks intended to be used connected in series with an a.c. transmission or distribution line or circuit forming part of an a.c. power system having a frequency of 15 Hz to 60 Hz. Focuses primarily on transmission application. The series capacitor units and banks are usually intended for high-voltage power systems. This standard is applicable to the complete voltage range. This standard formulates uniform rules regarding performance, testing and rating, formulates specific safety rules and serves as a guide for installation and operation.
Reihenkondensatoren für Starkstromanlagen -- Teil 1: Allgemeines
Condensateurs série destinés à être installés sur des réseaux -- Partie 1: Généralités
S'applique aux condensateurs unitaires et aux batteries de condensateurs destinés à être raccordés en série sur une ligne de transport ou de distribution d'énergie faisant partie d'un réseau alternatif de fréquence comprise entre 15 Hz et 60 Hz. Traite principalement des applications sur les réseaux de transport. Les condensateurs série et les batteries de condensateurs série sont habituellement destinés aux réseaux d'énergie à haute tension. Cette norme s'applique à toute la gamme de tensions. La présente norme formule des règles uniformes en ce qui concerne la qualité, les essais et les caractéristiques assignées, formule des règles spécifiques de sécurité et sert de guide pour l'installation et pour l'exploitation.
Zaporedni kondenzatorji za elektroenergetske sisteme – 1. del: Splošno
General Information
Relations
Standards Content (Sample)
SLOVENSKI SIST EN 60143-1:2004
STANDARD
september 2004
Zaporedni kondenzatorji za elektroenergetske sisteme – 1. del: Splošno
Series capacitors for power systems - Part 1: General
ICS 31.060.70 Referenčna številka
SIST EN 60143-1:2004(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD EN 60143-1
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2004
ICS 31.060.70 Supersedes EN 60143-1:1993
English version
Series capacitors for power systems
Part 1: General
(IEC 60143-1:2004)
Condensateurs série destinés Reihenkondensatoren
à être installés sur des réseaux für Starkstromanlagen
Partie 1: Généralités Teil 1: Allgemeines
(CEI 60143-1:2004) (IEC 60143-1:2004)
This European Standard was approved by CENELEC on 2004-03-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60143-1:2004 E
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EN 60143-1:2004 - 2 -
Foreword
The text of document 33/400/FDIS, future edition 4 of IEC 60143-1, prepared by IEC TC 33, Power
capacitors, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60143-1 on 2004-03-01.
This European Standard supersedes EN 60143-1:1993 + corrigendum October 1994.
The main changes with respect to the previous edition regard in particular the old section 3 "Insulation
level" that has been deeply modified and the new subclause 6.3 "Air clearances" has been added. In
addition, many technical changes have been introduced throughout the text regarding tests and
operation.
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) 2004-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60143-1:2004 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:
IEC 60273 NOTE Harmonized as HD 578 S1:1992 (not modified).
IEC 60060-2 NOTE Harmonized as EN 60060-2:1994 (not modified).
IEC 60721-2-6 NOTE Harmonized as HD 478.2.6 S1:1993 (not modified)
IEC 60110-1 NOTE Harmonized as EN 60110-1:1998 (not modified).
IEC 60252-1 NOTE Harmonized as EN 60252-1:2001 (not modified).
IEC 61048 NOTE Harmonized as EN 61048:1993 (modified).
IEC 61049 NOTE Harmonized as EN 61049:1993 (modified).
IEC 61071 NOTE Harmonized in EN 61071 series (partly modified).
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- 3 - EN 60143-1:2004
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60060-1 1989 High-voltage test techniques HD 588.1 S1 1991
+ corr. March 1990 Part 1: General definitions and test
requirements
IEC 60071-1 1993 Insulation co-ordination EN 60071-1 1995
Part 1: Definitions, principles and rules
IEC 60071-2 1996 Part 2: Application guide EN 60071-2 1997
IEC 60143-2 1994 Series capacitors for power systems EN 60143-2 1994
Part 2: Protective equipment for series
capacitor banks
IEC 60143-3 1998 Part 3: Internal fuses EN 60143-3 1998
IEC 60549 1976 High-voltage fuses for the external - -
protection of shunt power capacitors
IEC 60815 1986 Guide for the selection of insulators in - -
respect of polluted conditions
IEC 60871-2 1999 Shunt capacitors for a.c. power systems - -
having a rated voltage above 1kV
Part 2: Endurance testing
IEEE Std 693 1997 IEEE Recommended Practice for Seismic - -
Design of Substations
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NORME CEI
INTERNATIONALE IEC
60143-1
INTERNATIONAL
Quatrième édition
STANDARD
Fourth edition
2004-01
Condensateurs série destinés
à être installés sur des réseaux –
Partie 1:
Généralités
Series capacitors for power systems –
Part 1:
General
© IEC 2004 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
XA
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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60143-1 © IEC:2004 – 3 –
CONTENTS
FOREWORD.4
1 Scope and object .11
2 Normative references.13
3 Terms and definitions .13
4 Service conditions.25
4.1 Normal service conditions.25
4.2 Ambient air temperature categories .25
4.3 Abnormal service conditions .27
4.4 Abnormal power system conditions .27
5 Quality requirements and tests.27
5.1 Test requirements for capacitor units .27
5.2 Classification of tests.33
5.3 Capacitance measurement (routine test).35
5.4 Capacitor loss measurement (routine test) .37
5.5 Voltage test between terminals (routine test).37
5.6 AC voltage test between terminals and container (routine test).39
5.7 Test on internal discharge device (routine test) .39
5.8 Sealing test (routine test).39
5.9 Thermal stability test (type test) .39
5.10 AC voltage test between terminals and container (type test) .43
5.11 Lightning impulse voltage test between terminals and container (type test).43
5.12 Cold duty test (type test) .45
5.13 Discharge current test (type test) .47
5.14 Endurance test ( special test).49
6 Insulation level.49
6.1 Insulation voltages.49
6.2 Creepage distance.61
6.3 Air clearances.63
7 Overloads, overvoltages and duty cycles .73
7.1 Currents.73
7.2 Transient overvoltages.73
7.3 Duty cycles.73
8 Safety requirements.73
8.1 Discharge device.73
8.2 Container connection.75
8.3 Protection of the environment .75
8.4 Other safety requirements.75
9 Markings and instruction books .75
9.1 Markings of the unit .75
9.2 Markings of the bank .77
9.3 Instruction book.79
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60143-1 © IEC:2004 – 5 –
10 Guide for selection of ratings, installation and operation .79
10.1 General .79
10.2 Reactance per line, rated reactance per bank and number of modules per bank .81
10.3 Current ratings for the bank .85
10.4 Overvoltage protection requirements.89
10.5 Voltage limitations during power system faults .89
10.6 Protective and switching devices.93
10.7 Choice of insulation level .93
10.8 Other application considerations .93
Annex A (normative) Test requirements and application guide for external fuses and
units to be externally fused. 101
Annex B (informative) Economic evaluation of series capacitor bank losses. 107
Annex C (informative) Capacitor bank fusing and unit arrangement . 109
Annex D (informative) Examples of typical connection diagrams for large series
capacitor installations for transmission lines . 115
Annex E (informative) Precautions to be taken to avoid pollution of the environment by
polychlorinated biphenyls . 117
Bibliography . 119
Figure 1 – Typical nomenclature of a series capacitor installation .19
Figure 2 – Classification of overvoltage protection .31
Figure 3 – Time and amplitude limits for an overvoltage period .47
Figure 4 – Air clearance versus a.c. withstand .71
Figure 5 – Typical current-time profile of an inserted capacitor bank following the fault
and clearing of parallel line typical bank overload and swing current capabilities .85
Figure C.1 – Typical connections between capacitor units in a segment or phase. 113
Figure C.2 – Typical connections between elements within a capacitor unit. 113
Table 1 – Letter symbols for upper limit of temperature range.25
Table 2 – Ambient air temperature in thermal stability test .41
Table 3 – Standard insulation levels for range I (1 kV < U ≤ 245 kV) .57
m
Table 4 – Standard insulation levels for range II (U > 245 kV) .59
m
Table 5 – Typical insulation levels for platform-to-ground insulators.61
Table 6 – Specific creepage distances.63
Table 7 – Correlation between standard lightning impulse withstand voltages and
minimum air clearances .67
Table 8 – Correlation between standard switching impulse withstand voltages and
minimum phase-to-earth air clearances .69
Table 9 – Correlation between standard switching impulse withstand voltages and
minimum phase-to-phase air clearances.69
Table 10 – Typical bank overload and swing current capabilities .87
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60143-1 © IEC:2004 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SERIES CAPACITORS FOR POWER SYSTEMS –
Part 1: General
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 60143-1 has been prepared by IEC technical committee 33: Power
capacitors.
This fourth edition cancels and replaces the third edition, published in 1992, and constitutes a
technical revision.
The main changes with respect to the previous edition regard in particular the old section 3:
“Insulation level” that has been deeply modified and the new subclause 6.3 “Air clearances”
has been added. In addition, many technical changes have been introduced throughout the
text regarding tests and operation.
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60143-1 © IEC:2004 – 9 –
The text of this standard is based on the following documents:
FDIS Report on voting
33/400/FDIS 33/401/RVD
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
2011. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
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60143-1 © IEC:2004 – 11 –
SERIES CAPACITORS FOR POWER SYSTEMS –
Part 1: General
1 Scope and object
This part of IEC 60143 applies both to capacitor units and capacitor banks intended to be used
connected in series with an a.c. transmission or distribution line or circuit forming part of an
a.c. power system having a frequency of 15 Hz to 60 Hz.
The primary focus of this standard is on transmission application.
The series capacitor units and banks are usually intended for high-voltage power systems. This
standard is applicable to the complete voltage range.
This standard does not apply to capacitors of the self-healing metallized dielectric type.
The following capacitors, even if connected in series with a circuit, are excluded from this
standard:
– capacitors for inductive heat-generating plants (IEC 60110-1);
– capacitors for motor applications and the like (IEC 60252-1);
– capacitors to be used in power electronics circuits (IEC 61071);
– capacitors for discharge lamps (IEC 61048 and IEC 61049).
Standard types of accessories such as insulators, switches, instrument transformers, external
fuses, etc. should comply with the pertinent IEC standard.
NOTE 1 Additional requirements for capacitors to be protected by internal fuses, as well as the requirements for
internal fuses, are found in IEC 60143-3.
NOTE 2 Additional requirements for capacitors to be protected by external fuses, as well as the requirements for
external fuses, are found in Annex A.
NOTE 3 A separate standard for series capacitor accessories (spark-gaps, non-linear resistors, discharge
reactors, current-limiting damping reactors, damping resistors, circuit-breakers, etc.), IEC 60143-2, was completed
in 1994. A separate standard for internal fuses for series capacitors, IEC 60143-3 (formerly IEC 60595), has been
revised and was completed in 1998.
The object of this standard is:
– to formulate uniform rules regarding performance, testing and rating;
– to formulate specific safety rules;
– to serve as a guide for installation and operation.
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60143-1 © IEC:2004 – 13 –
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.
NOTE If there is a conflict between this standard and a standard listed below, the test of IEC 60143-1 prevails.
IEC 60060-1:1989, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60071-1:1993, Insulation co-ordination – Part 1: Definitions, principles and rules
IEC 60071-2:1996, Insulation co-ordination – Part 2: Application guide
IEC 60143-2:1994, Series capacitors for power systems – Part 2: Protective equipment for
series capacitor banks
IEC 60143-3:1998, Series capacitors for power systems – Part 3: Internal fuses
IEC 60549:1976, High-voltage fuses for the external protection of shunt power capacitors
IEC 60815:1986, Guide for the selection of insulators in respect of polluted conditions
IEC 60871-2:1999, Shunt capacitors for a.c. power systems having a rated voltage above
1 000 V – Part 2: Endurance testing
IEEE Std. 693:1997, IEEE Recommended Practice for Seismic Design of Substations
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE Certain terms come from IEC 60050(436) or IEC 60050(604) and where this is the case, the concept from
that publication is referenced in square brackets after the definition.
3.1
ambient air temperature (for capacitors)
temperature of air at the proposed location of the capacitor installation
3.2
bypass switch
device such as a switch or circuit-breaker used in parallel with a series capacitor and its
overvoltage protector to shunt line current for some specified time or continuously
NOTE This device should also have the capability of inserting and bypassing the capacitor into a circuit carrying a
specified level of current.
3.3
capacitor
word used when it is not necessary to distinguish between the different meanings of the words
capacitor unit and the assembly of capacitors associated with a segment
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60143-1 © IEC:2004 – 15 –
3.4
capacitor unit
unit
assembly of one or more capacitor elements in the same container with terminals brought out
[IEC 60050, 436-01-04]
3.5
(capacitor) element
device consisting essentially of two electrodes separated by a dielectric
[IEC 60050, 436-01-03]
3.6
capacitor losses
active power dissipated in the capacitor
[IEC 60050, 436-04-10]
NOTE All loss-producing components should be included. For a unit, this includes losses from the dielectric,
discharge device, internal fuses (if applicable) and internal connections. For the bank, this includes losses from the
units, external fuses (if applicable) and busbars. See Annex B for additional discussion.
3.7
cooling air temperature
temperature of cooling air measured at the hottest position in the capacitor assembly of a
segment, under rated current and steady-state conditions, midway between two units. If only
one unit is involved, it is the temperature measured at a point approximately 0,1 m away from
the capacitor container and at two-thirds of the height from its base
3.8
degree of compensation
k
degree of series compensation, k (of a line section) is
k = 100 (X / X ) %
c L
where
X is the capacitive reactance of the series capacitor;
c
X is the total positive sequence inductive reactance of the transmission line section on which
L
the series capacitor is applied.
3.9
discharge device (of a capacitor)
device connected across the terminals of the capacitor or built into the capacitor unit, capable
of reducing the residual voltage across the capacitor effectively to zero after the capacitor has
been disconnected from the supply
[IEC 60050, 436-03-15, modified]
NOTE Further requirements on the size of the discharge device are found in 8.1
3.10
external fuse (of a capacitor)
fuse connected in series with a capacitor unit or with a group of parallel units
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60143-1 © IEC:2004 – 17 –
3.11
fuseless capacitor bank
capacitor bank without any fuses, internal or external, constructed of parallel strings of
capacitor units. Each string consists of capacitor units connected in series
NOTE See Annex C for an explanation of “string”.
3.12
highest voltage of a three-phase system
highest r.m.s. phase-to-phase voltage which occurs under normal operating conditions at any
time and at any point of the system
NOTE It excludes voltage transients (such as those due to system switching) and temporary voltage variations due
to abnormal system conditions (such as due to faults or sudden disconnection of large loads).
3.13
highest voltage for equipment
U
m
highest r.m.s. value of phase-to-phase voltage for which the equipment is designed in respect
of its insulation as well as other characteristics which relate to this voltage in the relevant
equipment standards
[IEC 60050, 604-03-01]
NOTE This voltage is the maximum value of the highest voltage of the system for which the equipment may be
used.
3.14
insulation level
U
i
non-simultaneous combination of test voltages (power-frequency (U ) or switching impulse,
ipf
and lightning impulse) which characterizes the insulation of the capacitor with regard to its
capability of withstanding the electric stresses between terminals and earth, between phases
and between terminals and metalwork (e.g. platform) not at earth potential
3.15
internal fuse of a capacitor
fuse connected inside a capacitor unit, in series with an element or group of elements
[IEC 60050, 436-03-16]
3.16
limiting voltage
U
lim
maximum peak of the power frequency voltage occurring between capacitor unit terminals
immediately before or during operation of the overvoltage protector, divided by 2 (see 5.1.4)
3.17
line terminal
terminal to be connected to the power system
[IEC 60050, 436-03-01, modified]
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60143-1 © IEC:2004 – 19 –
3.18
module (of a series capacitor)
switchable step of a series capacitor consisting of identical segments in each phase (see
Figure 1), which furthermore are also equipped with provisions for a common operation of the
bypass switch of each of these segments
NOTE The bypass switch of a module is normally operated on a three-phase basis. However, in some applications
for protection purposes, the bypass switch may be required to temporarily operate on an individual phase basis.
SC installation
10
SC
Module 1 Module N
bank
1
9
9
Phase A
11 2-7 11
Segment A1 Segment AN
10
9
9
Phase B
11 11
Segment B1 Segment BN
10
9 9
Phase C
11 11
Segment C1 Segment CN
IEC 2904/03
Key
1 assembly of capacitor units
2-7 main protective equipment (Figure 2/M2 and Annex D)
9 isolating disconnector
10 bypass disc
...
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