SIST EN 50327:2003
(Main)Railway applications - Fixed installations - Harmonisation of the rated values for converter groups and tests on converter groups
Railway applications - Fixed installations - Harmonisation of the rated values for converter groups and tests on converter groups
This European Standard provides requirements for some type tests which are significant only when made on the entire group.
It provides also a basic relationship between compatible ratings of traction transformer and converter(s), in order to provide minimum requirements for the choice of their ratings.
Moreover it gives the minimum values to be considered in order to choose switching devices with characteristics suitable for the converter group(s) involved.
Annexes provide useful information as a guide for the group designer.
Table 1 indicates the components of a converter group and the relevant applicable standards.
Bahnanwendungen - Ortsfeste Anlagen - Harmonisierung der Bemessungswerte von Stromrichtergruppen und Prüfungen von Stromrichtergruppen
Diese Europäische Norm legt die Anforderungen für Prüfungen fest, die nur, wenn sie mit der gesamten Stromrichtergruppe durchgeführt werden, aussagekräftig sind.
Sie gibt auch die grundlegenden Beziehungen zwischen den Bemessungswerten des Bahntransformators und des Stromrichters an, um minimale Anforderungen für die Auswahl der Bemessungswerte zu geben.
Darüber hinaus gibt sie Minimalwerte an, die bei der Auswahl von Schaltgeräten mit Kennwerten entsprechend der Stromrichtergruppe(n) zu berücksichtigen sind.
Die Anhänge geben nützliche Informationen als Leitfaden für den Planer einer Stromrichtergruppe.
Tabelle 1 benennt die Komponenten einer Stromrichtergruppe und die für sie anwendbaren Normen.
Applications ferroviaires - Installations fixes - Harmonisation des valeurs assignées et des essais sur les groupes convertisseurs
Cette Norme européenne fournit des prescriptions pour quelques essais de type lesquels ne sont significatifs que s'ils sont faits sur le groupe complet.
Elle donne aussi la relation fondamentale entre les caractéristiques compatibles du transformateur de traction et le(s) convertisseur(s), afin de fournir des exigences minimales pour le choix de leurs caractéristiques.
De plus elle donne les valeurs minimales à considérer pour choisir des appareils de connexion avec des caractéristiques appropriées pour le(s) groupe(s) convertisseur(s) impliqué(s).
Les annexes fournissent à titre indicatif des informations utiles au concepteur du groupe.
Le Tableau 1 indique les composants d’un groupe convertisseur et les normes correspondantes applicables.
Železniške naprave – Stabilne naprave električne vleke – Harmonizacija vrednosti razredov pretvorniških skupin in preskušanje pretvorniških skupin
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50327:2003
01-december-2003
äHOH]QLãNHQDSUDYH±6WDELOQHQDSUDYHHOHNWULþQHYOHNH±+DUPRQL]DFLMDYUHGQRVWL
UD]UHGRYSUHWYRUQLãNLKVNXSLQLQSUHVNXãDQMHSUHWYRUQLãNLKVNXSLQ
Railway applications - Fixed installations - Harmonisation of the rated values for
converter groups and tests on converter groups
Bahnanwendungen - Ortsfeste Anlagen - Harmonisierung der Bemessungswerte von
Stromrichtergruppen und Prüfungen von Stromrichtergruppen
Applications ferroviaires - Installations fixes - Harmonisation des valeurs assignées et
des essais sur les groupes convertisseurs
Ta slovenski standard je istoveten z: EN 50327:2003
ICS:
29.200 8VPHUQLNL3UHWYRUQLNL Rectifiers. Convertors.
6WDELOL]LUDQRHOHNWULþQR Stabilized power supply
QDSDMDQMH
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
SIST EN 50327:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50327:2003
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SIST EN 50327:2003
EUROPEAN STANDARD EN 50327
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2003
ICS 29.200; 29.280
English version
Railway applications –
Fixed installations –
Harmonisation of the rated values for converter groups
and tests on converter groups
Applications ferroviaires – Bahnanwendungen –
Installations fixes – Ortsfeste Anlagen –
Harmonisation des valeurs assignées et Harmonisierung der Bemessungswerte
des essais sur les groupes convertisseurs von Stromrichtergruppen und Prüfungen
von Stromrichtergruppen
This European Standard was approved by CENELEC on 2002-05-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50327:2003 E
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SIST EN 50327:2003
EN 50327:2003 - 2 -
Foreword
This European Standard was prepared by SC 9XC, Electric supply and earthing systems for
public transport equipment and ancillary apparatus (fixed installations) of Technical Committee
CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50327 on 2002-05-01.
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) 2003-09-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-05-01
Annexes designated “informative” are given for information only.
In this standard, annexes A, B and C are informative.
____________
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Contents
Introduction . 4
1 Scope. 5
2 Normative references. 5
3 Definitions, symbols and abbreviations . 6
3.1 Basic connections of converter groups . 6
3.2 Symbols. 8
3.3 Definitions. 9
4 Service conditions. 13
5 General requirements for converter groups. 13
5.1 Voltage requirements.13
5.2 Current demand.14
5.3 Short circuit requirements.14
5.4 Insulation levels.14
6 Relationships among parameters of the items of a converter group . 15
6.1 General. 15
6.2 Theoretical relationships.15
7 Tests suitable to verify the correct performance of the converter group. 17
7.1 General. 17
7.2 Performance of tests. 17
7.3 Test schedule . 17
7.4 Loss determination for the converter group. 17
7.5 Power factor measurement.17
7.6 Measurement of the inherent voltage drop. 18
7.7 Short circuit test. 18
Annex A (informative) Short circuit currents. 19
Annex B (informative) Examples of power factors of converter groups
with d.c. output. 24
Annex C (informative) Interbridge reactor. 26
Bibliography . 28
Figure 1 – Diagrams of converter groups and related quantities. 7
Figure 2 – Typical arrangement of an a.c./d.c. group with auxiliary services transformer. 8
Figure A.1 – Example of transient current under short circuit for a 12-pulse converter . 21
Figure A.2 – Example of transient current on the most charged arm . 21
Figure A.3 – External characteristic for connection 7 (single-phase bridge). 22
Figure A.4 – External characteristic for connection 8 (three-phase bridge). 22
Figure A.5 – External characteristic for connections 9 and 12 (double three-phase bridge). 23
Figure C.1 – Interbridge reactor. 26
Table 1 – Components of a converter group. 5
Table 2 – Theoretical relationships for line commutated converters. 16
Table 3 – Relationship valid in most cases between basic and rated current. 16
Table 4 – Summary of tests. 17
Table A.1 – Formulae for k . 19
dc
Table A.2 – Typical values for k . 20
dc
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EN 50327:2003 - 4 -
Introduction
Converters, traction transformers and switchgear are ordered in most cases as individual items
and are tested in manufacturer’s premises as such.
It is evident that tuning is necessary to choose compatible ratings and that certain performances
cannot be verified (through additional or investigation type tests) unless at least the traction
transformer and the converter are coupled together.
That is the reason for this document.
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1 Scope
This European Standard provides requirements for some type tests which are significant only
when made on the entire group.
It provides also a basic relationship between compatible ratings of traction transformer and
converter(s), in order to provide minimum requirements for the choice of their ratings.
Moreover it gives the minimum values to be considered in order to choose switching devices
with characteristics suitable for the converter group(s) involved.
Annexes provide useful information as a guide for the group designer.
Table 1 indicates the components of a converter group and the relevant applicable standards.
Table 1 - Components of a converter group
Component Standard
Converter EN 50328
Traction transformer EN 50329
Interbridge reactor EN 60289
and informative annex D
Reactors EN 60289
Transducers EN 50123-7-1
EN 50123-7-2
Instrument transformers (as applicable) EN 50152-3-2 /
EN 50152-3-3
EN 60044 series
Control devices as applicable
Busbars and connections as applicable
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
EN 50123-7-1 2003 Railway applications – Fixed installations – D.C. switchgear
Part 7-1: Measurement, control and protection devices for
specific use in d.c. traction systems - Application guide
EN 50123-7-2 2003 Railway applications – Fixed installations – D.C. switchgear
Part 7-2: Measurement, control and protection devices for
specific use in d.c. traction systems - Isolating current
transducers and other current measuring devices
EN 50125-2 2002 Railway applications – Environmental conditions for
equipment – Part 2: Fixed electrical installations
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EN 50327:2003 - 6 -
EN 50152-3-2 2001 Railway applications – Fixed installations - Particular
requirements for a.c. switchgear – Part 3-2: Measurement,
control and protection devices for specific use in a.c. traction
systems - Single-phase current transformers
EN 50152-3-3 2001 Railway applications – Fixed installations - Particular
requirements for a.c. switchgear – Part 3-3: Measurement,
control and protection devices for specific use in a.c. traction
systems - Single-phase inductive voltage transformers
EN 50163 1995 Railway applications – Supply voltages of traction systems
EN 50328 2003 Railway applications – Fixed installations – Electronic power
converters for substations
EN 50329 2003 Railway applications – Fixed installations – Traction
transformers
EN 60044 Series Instrument transformers (IEC 60044 series, mod.)
EN 60076 Series Power transformers (IEC 60076 series, mod.)
EN 60289 1994 Reactors (IEC 60289:1988, mod.)
1)
EN 61000-2-12 - Electromagnetic compatibility (EMC)
Part 2-12: Environment – Compatibility levels for low-
frequency conducted disturbances and signalling in public
medium-voltage power supply systems
IEC 60050-811 1991 International Electrotechnical Vocabulary (IEV)
Chapter 811: Electric traction
IEC/TR 60146-1-2 1991 Semiconductor convertors – General requirements and line
commutated convertors
Part 1-2: Application guide
3 Definitions, symbols and abbreviations
3.1 Basic connections of converter groups
For the purpose of this standard it is given a schematic overview of the various types of
converter groups as far as the main components are concerned. The various types of converter
groups are schemed in Figure 1 and Figure 2.
1)
To be pulished.
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Supply side
Supply side
U
1
L
U 1
L
Traction converter
transformer(s)
Traction transformer(s)
U
S
2
U
v
U
S
a.c.
2
Uv Converter
a.c.
U 4
P
a.c.
Converter
d.c.
Traction inverter
transformer(s)
3
U 5
d
U
5
V
Traction side
Traction side
a.c./d.c. group a.c./a.c. group
Point Rated Rated current Basic current Rated service Basic service
voltage(s) current current
U I I I I
NL NL BL NGL BGL
1: Supply-side
2: Transformer
U I I I I
NS NS BS NGS BGS
output
U I I I I
Nv Nv Bv NGv BGv
2: Converter input
3: a.c/d.c.
U (U U ) I I n.a. n.a.
Nd Bd
Nd di diα
converter output
4: a.c./a.c. or
U I I n.a. n.a.
NP NP BP
d.c./a.c.
converter output
U I I n.a. n.a.
NV NV BV
5: a.c. traction-side
U (U U ) I I n.a. n.a.
Nd Bd
Nd di diα
5: d.c. traction-side
NOTE 1 “input” - “output” are referred to the normal flow of the current.
n.a. = not applicable (not significant).
Figure 1 - Diagrams of converter groups and related quantities
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Supply side
U
L 1
I
L
Traction transformer(s)
Auxiliary services
transformer
I
S
U
S
U
v
2
I
v
a.c.
Converter
d.c.
I 3
d
U 5
d
Traction side
NOTE Connection point 2 is separately indicated as transformer output and as converter input. In effect, it is
possible that a connection is present for auxiliary supplies or that other circuit components are interposed.
Figure 2 - Typical arrangement of an a.c./d.c. group
with auxiliary services transformer
3.2 Symbols
f rated frequency
N
I basic d.c. current on the output or intermediate side of a converter group
Bd
I basic service current on the supply-side of the converter group
BGL
I basic service current on the converter side of a traction converter transformer
BGS
I basic service current on the supply side of a traction converter
BGv
I basic current on the supply-side of a converter group
BL
I basic current on the inverter-side of a traction inverter transformer
BP
I basic current on the converter side of a traction converter transformer
BS
I basic current on the transformer side of a traction converter
BV
I basic a.c. current on the traction side of a traction converter group
Bv
I rated d.c. current on the traction side of a converter group
Nd
I rated service current on the supply-side of a converter group
NGL
I rated service current on the converter side of a traction converter transformer
NGS
I rated service current on the supply side of a traction converter
NGv
I rated current on the supply-side of a converter group
NL
I rated current on the inverter-side of a traction inverter transformer
NP
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I rated a.c. current on the traction side of a converter group
NV
I rated current on the transformer side of a traction converter
Nv
I rated current on the converter side of a traction converter transformer
NS
K coupling factor
k conventional load ratio
dx
S rated power of the supply side winding of a traction transformer
NL
S rated power of the inverter side winding of an inverter transformer
NP
S rated power of a winding in a traction transformer
NSn
S rated power of the traction side winding(s) of an inverter transformer
NV
U ideal no-load direct voltage
di
U controlled ideal no-load direct voltage
diα
U conventional no-load direct voltage
d0
U real no-load direct voltage
d00
U highest permanent voltage
max1
U rated direct voltage
Nd
U nominal voltage
nd
U rated voltage on the supply-side of a converter group
NL
U rated voltage on the inverter side of a traction inverter transformer
NP
U rated voltage on the converter side(s) of a traction converter transformer
NS
U rated a.c. voltage on the traction side(s) of an inverter transformer
NV
U rated a.c. voltage on the supply side of a converter
Nv
Ψ power factor ratio
3.3 Definitions
For the purpose of this European Standard the following definitions apply:
3.3.1
converter group
the chain consisting of the traction transformer and the associated converter
3.3.2
traction transformer
transformer connected to an a.c. or d.c. contact line, directly or through a converter, used in
fixed installations of railway applications
3.3.2.1
traction converter transformer
traction transformer on the supply side of a converter group and supplying contact line(s)
through static converter(s)
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3.3.2.2
traction inverter transformer
traction transformer on the traction (contact line) side of a converter group and supplied by a
static converter(s) (inverter)
3.3.3
electronic power converter
operative unit for power conversion comprising one or more assemblies of semiconductor
devices
3.3.4
rated value
numerical value for the electrical, thermal, mechanical and environmental rating assigned to the
quantities which define the operation of a converter group in the conditions specified in
accordance with this European Standard and on which the supplier’s guarantees and tests are
based
3.3.5
rated frequency (f )
N
frequency on either side of the converter group for the conversion of which the converter group
is designed to operate
3.3.6
rated voltage on the supply-side of a converter group (U )
NL
r.m.s. value of the sinusoidal no-load voltage assigned to be applied to the supply-side
terminals of a converter group
3.3.7
rated voltage on the converter side(s) of a traction converter transformer (U )
NS
r.m.s. value of the no-load voltage at the line-to-line terminals of the converter side(s) of a
traction converter transformer, at the rated voltage on the supply side of the traction transformer
3.3.8
rated a.c. voltage on the supply side of a converter (U )
Nv
r.m.s. value of the no-load voltage between vectorially consecutive commutating phase
terminals of a commutating group, at the rated voltage on the supply side of the traction
converter transformer
3.3.9
rated voltage on the inverter side of a traction inverter transformer (U )
NP
r.m.s. value of the sinusoidal no-load voltage resulting at the inverter side terminals of a traction
transformer
3.3.10
rated voltage on the traction side(s) of an inverter transformer (U )
NV
r.m.s. value of the no-load voltage at the line-to-line terminals of the traction side(s) of an
inverter transformer at the rated voltage on its inverter side
3.3.11
ideal no-load direct voltage (U )
di
theoretical no-load mean direct voltage of a converter, assuming no reduction by phase control,
no voltage drop in the assemblies and no voltage rise at small loads (see 1.5.26.1 of EN 50328)
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3.3.12
controlled ideal no-load direct voltage (U )
diα
theoretical no-load mean direct voltages of a converter, when the direct voltage is reduced by
phase control, assuming no-voltage drop in the assemblies and no voltage rise at small loads
(see 1.5.26.2 of EN 50328)
3.3.12.1
real no-load direct voltage (U )
d00
actual mean direct voltage at zero direct current
3.3.13
rated direct voltage (U )
Nd
specified value of the direct voltage between the d.c. terminals of the converter assembly at
basic direct current. This value is the mean value of the direct voltage (see also 1.5.19 of
EN 50328)
NOTE The term “rated direct voltage” is kept for traditional reasons because, considering the use of the basic
current the exact notation should be “basic direct voltage”. U has more the characteristics of a rated voltage.
di
3.3.14
rated a.c. voltage on the traction-side of the converter group (U )
NV
r.m.s. value of the sinusoidal no-load voltage at the traction-side of a converter group fed at U
NL
3.3.15
nominal voltage (U , U )
nd nV
suitable approximate d.c. or a.c. voltage used to designate or identify a converter group
NOTE The standard values of nominal voltages are given in EN 50163.
3.3.16
rated power of a winding in a traction transformer (S , S , S , S )
NL NP NSn NV
conventional value of apparent power assigned to a winding which, together with the rated
voltage of the winding , determines its rated current. It is based on the fundamental components
of voltage and current
NOTE 1 ”primary” and “secondary” are referred to the normal flow of energy from the supply side to the traction
side.
NOTE 2 In the suffix “Sn” for secondary windings “n” is the assigned order number of the secondary winding. In
formula where any winding is separately considered S indicates the rated power of the winding considered.
N
n
NOTE 3 S or S may differ from the S because the sum should be vectorial taking into account the
NL NP
∑ NSn
1
cos ϕ of the secondary currents involved.
n
3.3.17
rated current on the supply-side of the converter group (I )
NL
r.m.s. value of the fundamental component of the current flowing through a line terminal of a
primary winding of the converter transformer which is derived from its rated power S and rated
NL
voltage U for the winding
NL
3.3.18
basic current on the supply-side of the converter group (I )
BL
r.m.s. value of the fundamental component of the current flowing through a line terminal of a
primary winding of the traction converter transformer which is assumed to last for longer periods
and represents the load carried out continuously by the converter group and on which the
overloads are imposed
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3.3.19
rated service current on the supply-side of the converter group (I )
NGL
r.m.s. value of the current flowing through a supply side terminals of a primary winding of the
traction converter transformer which contains all harmonic components and whose fundamental
component is the rated current (I )
NL
NOTE 1 In case of traction inverter transformers it is assumed that the service current is not sensibly different from
sinusoidal current in all windings.
NOTE 2 The generic r.m.s. value of the service current is indicated as I
G.
The generic r.m.s. value of the harmonic of order h of an a.c. current is indicated as I .
h
In formulas where any winding is separately considered I indicates the rated current of the winding considered and
N
I its rated service current.
NG
3.3.20
basic service current on the supply-side of the converter group (I )
BGL
r.m.s. value of the service current through a line terminal of a primary winding of the step-down
traction transformer which contains all harmonic components and which is assumed to last for
longer periods and represents the load carried out continuously by the converter group and on
which the overloads are imposed
3.3.21
rated d.c. current on the output or intermediate side of a converter group (I )
Nd
mean value of the current at the output terminals of the converter group, representing the
quadratic mean of the currents delivered according to the loading profile (duty class or load
cycle). It applies also to the input to an inverter
3.3.22
basic d.c. current on the output or intermediate side of a converter group (I )
Bd
mean value of the current at the output terminals of the converter group, according to the load
cycle. For the standardised duty classes, which have no quadratic mean, the factors according
to Table 3 apply (see 3.3.27)
3.3.23
rated a.c. current on the traction-side of a converter group (I )
NV
the r.m.s. value of the fundamental component of the current at the traction-side terminals of the
converter group, which causes I on the supply-side
NP
3.3.24
power factor ratio (ψ)
ratio between the power factor resulting on the line side of the converter group and that of the
a.c. output of the same (inverter)
NOTE This ratio is influenced by the magnetising current in the transformer and by the reactances of the devices
added to the converter, unless the power factor is controlled by thyristors. Some complementary information may be
found in Annex B.
3.3.25
current demand
actual or expected load variation of the current absorbed by a traction line, whose root mean
square value is the rated current. It is expressed by a load diagram
3.3.25.1
load diagram
true demand of current by the traction circuit in the worse expected condition
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3.3.26
load cycle
conventional representation of the current demand to a converter group expressed in per unit of
the rated currents. It shows the repetitive variation of the loads with the time and, hence, the
overloads and underloads the converter group is expected to carry, as well as, for the
transformers, the duration and intervals assumed
3.3.27
duty class
conventional classification of the current capability of a converter group expressed in per unit of
the basic currents. The duty classes, associated with other rated values, define the
characteristics of a converter group
NOTE EN 50328 and EN 50329 indicate preferred duty classes.
3.3.28
nominal power of a converter group
suitable approximate quantity value used to designate the output power of a converter group
- for converter groups with d.c. output: P = U × I [kW],
n nd Bd
- for converter groups with a.c. output: P = U × I [kVA]
n NV NV
4 Service conditions
The service conditions applicable for the individual pieces of equipment of the group apply.
Complementary requirements, if needed, are available in EN 50125-2.
5 General requirements for converter groups
5.1 Voltage requirements
The output voltage range on the traction side of traction converter groups shall be chosen to
supply the contact line, taking into account the voltage limits of EN 50163.
NOTE For diode rectifier groups it is in most cases acceptable that the voltage at currents below the transition
current (see Figure 2 of EN 50328) exceeds U but the conventional no-load voltage U should be lower or equal
max1 d0
U . In those cases where the real no-load voltage of a rectifier group U shall not exceed U additional
max1 d00 d0
provisions in the rectifier against the voltage rise at small currents are recommended.
The maximum admissible distortion in the supply voltage shall be as indicated in 2.3.2.1.3 of
EN 50328.
In case of paralleled groups feeding the same busbars, voltage and impedance characteristics
shall be identical, within EN 60076 tolerances, on any like tap position.
For converter groups, the r.m.s. value of the voltage shall be based on the rectified mean value
of the d.c. system voltage (see Figure 1).
When the secondary windings of a supply-side traction transformer are more than one, even if
the secondaries are intended to feed a single conversion bridge, the rated secondary voltage of
each winding is differing from that of other secondary winding by small quantities. The
tolerances in any case shall be observed.
The tap-changer of the traction transformers shall be normally considered effective only for
compensating long-period variations on the supply-side voltage.
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5.2 Current demand
The converter group is subject to a load with important variations in amplitude and duration.
Therefore, the expected load diagram shall be determined by the purchaser before issuing a
tender invitation for the converter group. Basing on this load diagram a duty class or load cycle
shall be determined.
In traction converter transformers with connection 9 of the converter, the rated power of the
converter side windings is increased, takin
...
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