SIST EN 50327:2003/A1:2005
(Amendment)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
2021: CLC legacy converted by DCLab NISOSTS
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
Železniške naprave – Stabilne naprave električne vleke – Harmoniziranje vrednosti razredov pretvorniških skupin in preskušanje pretvorniških skupin
General Information
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Standards Content (Sample)
SLOVENSKI SIST EN 50327:2003/A1:2005
STANDARD
december 2005
Železniške naprave – Stabilne naprave električne vleke – Harmoniziranje
vrednosti razredov pretvorniških skupin in preskušanje pretvorniških skupin
Railway applications - Fixed installations - Harmonization of the rated values for
converter groups and tests on converter groups
ICS 29.200; 29.280 Referenčna številka
SIST EN 50327:2003/A1:2005(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 50327/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2005
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 Harmonisierung der Bemessungswerte
et des essais sur les groupes von Stromrichtergruppen und Prüfungen
convertisseurs von Stromrichtergruppen
This amendment A1 modifies the European Standard EN 50327:2003; it was approved by CENELEC on
2005-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment 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 amendment 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
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50327:2003/A1:2005 E
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EN 50327:2003/A1:2005 - 2 -
Foreword
This amendment to the European Standard EN 50327:2003 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 drat was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as amendment A1 to EN 50327:2003 on 2005-03-01.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-03-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2008-03-01
__________
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- 3 - EN 50327:2003/A1:2005
3.2 Symbols
Add the following symbols:
d resistive direct voltage drop of the converter group in percent of U
rB di
d inductive direct voltage drop of the converter group in percent of U
xB di
e resistive component of the relative short-circuit voltage of the converter transformer
rB
e inductive component of the relative short-circuit voltage of the converter transformer
xB
e inductive component of the relative impedance of the feeding grid
xL
f rated frequency
N
I maximum current value of the range of linear voltage drop
dlinmax
I sustained d.c. short-circuit current
SS
I theoretical maximum value of the steady state d.c. short-circuit current at L = ∞
SSmax d
Î transient peak value of the d.c. short-circuit current
SS
L inductance of the secondary windings of the converter transformer
s
L inductance on the load side (i.e.traction side)
d
R resistance on the load side (i.e.traction side)
d
T circuit time constant of the load circuit
c
T time constant of the grid on the supply side of the converter group
s
V resistive direct voltage drop on the load side (i.e.traction side) in percent of U
D di
V total relative resistive direct voltage drop in percent of U
Dt di
Annex A
Replace by the following new Annex A:
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EN 50327:2003/A1:2005 - 4 -
Annex A
(informative)
Determination of the voltage drop and the short-circuit currents
of converter groups
A.1 General
The usual connections of non-controlled traction converter groups are the connections no. 8, 9 and 12
(see Table 2).
This Annex gives a simplified method for the determination of the d.c. output characteristics of converter
groups having one of the above mentioned connections.
The characteristics of non-controlled converters can be shown as a curve between the no-load voltage
U and the short-circuit point (see Figure A.1). This curve gives only the steady state values of the
d0
current but not the transient values.
The method described in Table A.1 gives the possibility to determine the voltage characteristics, the
steady state currents and the transient currents.
The values of main interest for traction converters are:
– the conventional no-load voltage U (U ≈ U );
d0 d0 di
– the rated direct voltage U at basic current I
Nd Bd;
– the direct voltage U at specified overload currents;
d
– the sustained value I and the peak value Î of the short-circuit current at the output terminals of
SS SS
the rectifier and at other locations in the substation and the d.c. supply system.
U / U
d d i
U
d i
1,0
u
Nd
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0,0
0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0
i
-0Bd,1
I / I
d SS m a x
Figure A.1 - Typical characteristic of a rectifier group
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- 5 - EN 50327:2003/A1:2005
For six-pulse rectifier groups Table A.1 is used together with Figure A.2.
The characteristics of twelve-pulse rectifier groups depend on the coupling factor between the secondary
windings of the converter transformer. When the secondary windings are uncoupled, the characteristics
are the same as for the six-pulse three-phase bridge connection (connection no. 8).
For twelve-pulse rectifier groups with coupling factor K ≈ 0, Table A.1 is used together with Figure A.2.
For twelve-pulse rectifier groups with closely coupled secondary windings (coupling factor K ≈ 1)
Table A.1 is used together with Figure A.3.
A.2 Description of the method
The determination of the voltage characteristics and the short-circuit current calculation of the steady
state values and the transient peak values for a fault at the rectifier output terminals are given in step 1 to
step 5 of Table A.1.
For given load impedances the determination of the characteristics and the short-circuit calculation of the
steady state values as well as the transient peak values is described in step 6 to step 10. Such load
impedances are e.g. the resistance of d.c. cables to the d.c. switchgear or to the trackside feeding point
or the inductance of smoothing reactors or current rise limiting reactors.
The determination of the initial current rise di/dt of the short-circuit current is described in step 11.
t=0
The determination of the range of linear voltage drop is described in step 12.
Data required for the calculation:
– basic direct current I of the rectifier;
Bd
– no-load direct voltage U ;
di
– inductive component of the short-circuit voltage of the transformer e ;
xB
– resistive component of the short-circuit voltage of the transformer e (see Note 1 below) ;
rB
– coupling factor K (for twelve-pulse rectifiers only, see Note 5 below and EN 50329, 1.3.16).
Table A.1 – Method of use of the charts in Figure A.2 and Figure A.3
Step Action Formulae
Calculate d and d . d = 0,5 x e (for Figure A.2)
1
xB rB xB xB
d = 0,26 x e (for Figure A.3)
xB xB
d = e
rB rB
Calculate the ratio I / I .
I
Bd Ssmax
Bd
=()1 + K × 3 × d
x
I
Draw a vertical line at I / I . SSmax
Bd SSmax
Calculate I .
SSmax
2 Mark d on the vertical line drawn in step 1.
rB
To increase the accuracy it is recommended to draw a
vertical line at 10 x I / I and to mark the point 10 x d
Bd SSmax rB
on this line.
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EN 50327:2003/A1:2005 - 6 -
Table A.1 – Method of use of the charts in Figure A.2 and Figure A.3 (continued)
Step Action Formulae
3 Draw a straight line from the zero point through the point
marked in step 2.
The distance between this line and the L = ∞ curve gives the
d
external voltage characteristics of the rectifier group at the
d.c. terminals; the distance below this line and the horizontal
axis gives the resistive voltage drop; the distance between
the L = ∞ curve and U gives the inductive voltage drop.
d di
Calculate U at I . U = [100 % - (d + d )] x U
Nd Bd Nd xB rB di
The external voltage at any other current value within the
range of linear voltage drop can be calculated in the same
manner.
L = ∞
4 The intersection of the line drawn in step 3 with the
d
(corresponding to T = ∞) curve gives the ratio of the
c
sustained value of the short-circuit current I / I for a
SS SSmax
dead short at the rectifier output terminals.
5 The intersection of the line drawn in step 3 with the L = 0
d
(corresponding to T = 0) curve gives the ratio of the transient
c
value of the short-circuit current to I for a dead fault at
SSmax
the rectifier output terminals.
Due to the ripple of the direct current this value has to be
multiplied by 1,05 to get the peak value of the short-circuit
current Î .
SS
6 Introduction of the load resistance R :
d
Calculate the relative resistive voltage drop on the load side V = R x I / U
D d Bd di
V at I .
D Bd
Calculate the total relative resistive voltage drop V . V = d + V
Dt Dt rB D
Multiply the value by 10 and mark it on the vertical line at 10 x
I / I .
Bd SSmax
7 Draw a straight line from the zero point to the point marked in
step 6.
8 The intersection of the line drawn in step 7 with the L = ∞
d
(corresponding to T = ∞) curve gives the ratio of the
c
sustained value of the short-circuit current I / I for a
SS SSmax
fault with a d.c. side load resistance R .
d
9 The intersection of the line drawn in step 7 with the L = 0
d
(corresponding to T = 0) curve gives the ratio of the transient
c
value of the short-circuit curre
...
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