prEN 50388-2:2023

SLOVENSKI STANDARD
01-februar-2024
Fiksni postroji in vozna sredstva za železniške naprave - Tehnični kriteriji za
uskladitev med napajalnimi viri in voznimi sredstvi za doseganje interoperabilnosti
- 2. del: Stabilnost in harmoniki
Fixed installations and rolling stock for railway applications - Technical criteria for the
coordination between electric traction power supply systems and rolling stock to achieve
interoperability - Part 2: Stability and harmonics
Bahnanwendungen - Ortsfeste Anlagen und Bahnfahrzeuge - Technische Kriterien für
die Koordination zwischen Anlagen der Bahnenergieversorgung und Fahrzeugen zum
Erreichen der Interoperabilität - Teil 2: Stabilität und Oberschwingungen
Installations Fixes et Matériel Roulant pour les Applications ferroviaires - Critères
techniques pour la coordination entre les installations fixes de traction électrique et le
matériel roulant pour réaliser l’interopérabilité
Ta slovenski standard je istoveten z: prEN 50388-2:2023
ICS:
29.280 Električna vlečna oprema Electric traction equipment
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD DRAFT
prEN 50388-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2023
ICS 45.060.01; 29.280 -
English Version
Fixed installations and rolling stock for railway applications -
Technical criteria for the coordination between electric traction
power supply systems and rolling stock to achieve
interoperability - Part 2: Stability and harmonics
Applications ferroviaires - Installations fixes et matériel Bahnanwendungen - Ortsfeste Anlagen und Bahnfahrzeuge
roulant - Critères techniques pour la coordination entre les - Technische Kriterien für die Koordination zwischen
installations fixes de traction électrique et le matériel roulant Anlagen der Bahnenergieversorgung und Fahrzeugen zum
pour réaliser l¿interopérabilité - Partie 2: stabilité et Erreichen der Interoperabilität - Teil 2: Stabilität und
harmoniques Oberschwingungen
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2024-03-15.

It has been drawn up by CLC/SC 9XC.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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,
Türkiye and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 77058 Ref. No. prEN 50388-2:2023 E

18 Contents Page
19 European foreword . 3
20 Introduction . 4
21 1 Scope . 6
22 2 Normative references . 6
23 3 Terms, definitions, abbreviations and symbols . 7
24 3.1 Terms and definitions . 7
25 3.2 Abbreviations and symbols . 10
26 4 Requirements . 10
27 4.1 Electrical resonance stability . 10
28 4.2 Low-frequency stability . 13
29 4.2.1 Introduction . 13
30 4.2.2 General requirements . 13
31 4.2.3 Rolling stock . 15
32 4.2.4 Static converters . 15
33 4.2.5 Infrastructure. 15
34 4.3 Overvoltages caused by harmonics . 16
35 4.3.1 General . 16
36 4.3.2 Rolling stock . 16
37 4.3.3 Static converters . 20
38 4.3.4 Infrastructure. 20
39 4.4 Specific issues arising during lifetime of new element . 21
40 5 Tests and documentation . 21
41 5.1 Electrical resonance stability . 21
42 5.1.1 Rolling stock . 21
43 5.1.2 Infrastructure. 26
44 5.2 Low-frequency stability . 28
45 5.2.1 Rolling stock . 28
46 5.2.2 Static converters . 29
47 5.2.3 Infrastructure. 29
48 5.3 Overvoltages caused by harmonics . 29
49 5.3.1 Rolling stock . 29
50 5.3.2 Static converters . 30
51 5.3.3 Infrastructure. 31
52 Annex A (informative) Technical background . 32
53 Annex B (informative) Examples from experienced phenomena (measurements) . 44
54 Annex C (informative)  Data related to the compatibility study of harmonics and dynamic effects . 49
55 Annex D (informative)  Examples experienced in DC Systems . 63
56 Annex ZZ (informative) Relationship between this European Standard and the Essential
57 Requirements of EU Directive (EU) 2016/797 aimed to be covered . 65
58 Bibliography . 67
59 European foreword
60 This document (prEN 50388-2:2023) has been prepared by CLC/SC 9XC, “Electric supply and earthing
61 systems for public transport equipment and auxiliary apparatus (Fixed installations)”, of CLC/TC 9X,
62 “Electrical and electronic applications for railways”.
63 It is also relevant to the scope and expertise of CLC/SC 9XB, “Electromechanical material on board of rolling
64 stock”.
65 This document is currently submitted to the Enquiry.
66 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
67 EN 50388 “Railway applications – Fixed installations and rolling stock - Technical criteria for the coordination
68 between traction power supply and rolling stock to achieve interoperability” consists of the following parts:
69 — Part 1: General
70 — Part 2: Stability and harmonics
71 This document has been prepared under a standardization request addressed to CENELEC by the
72 European Commission. The Standing Committee of the EFTA States subsequently approves these requests
73 for its Member States.
74 For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of this
75 document.
76 Introduction
77 To improve readability, this document is structured as shown in Table 1, which only shows references to the
78 most important sections.
79 Table 1 — Structure of this document
Topic Requirements Tests and documentation
Section Main requirements Section Most important elements
Electrical 4.1 Definition of a limit frequency 5.1 For controlled elements, in most
resonance f cases measurement of frequency
L
stability response of input admittance is
- Lowest power system
required.
resonance frequency shall
not be < f 5.1.1.2 Defines in which cases input
L
admittance shall be measured and
- All controlled elements shall
how it shall be measured.
be passive for all
frequencies > f 5.1.1.3 Defines the combined test
L
Requirements for filter 5.1.1.4 Defines in which cases
capacitors simulation is sufficient and specifies
the requirements for the simulator.
5.1.1.5 Defines in which cases
declaration of conformity is sufficient.
5.1.2 Defines the methods to be
used to assess the lowest resonant
frequency of the power supply.
A.1 Technical background about electrical resonance stability
B.1 Examples of real electrical resonance instability experiences
Low- 4.2 Stable operation shall be 5.2 Verification either by
frequency demonstrated for predefined
• time domain simulation (or
stability operation scenarios of
measurements); or
electric traction power supply
• any other validated method.
system and one or several
identical traction units at one
location.
A.2 Technical background about low-frequency stability
A.2.1 Background and experiences
A.2.2 Acceptance criteria and verification
B.2 Examples of experienced low frequency power oscillations
Topic Requirements Tests and documentation
Section Main requirements Section Most important elements
Overvoltages 4.3 4.3.2 Rolling stock 5.3 5.3.1 Demonstration of compliance
caused by for rolling stock by:
Defines the limit of the
harmonics
overvoltage and specifies the - Calculation of line current spectrum
calculation method by using including plausibility check by
line current spectrum, measurement
bandpass filtering, - Calculation of harmonic voltage
summation methods and assessment using the method given
standardized power supply in 4.3
impedances.
- Check of interlacing between units
4.3.2.3 Overvoltage as specified in 4.3.2.2
detection. Suggests methods
- Check of overvoltage protection as
of overvoltage detection.
specified in 4.3.2.3
4.3.3 Defines applicability
- If diode rectification is used to
and the overvoltage limits for
reduce risk of overvoltages check of
static converter stations.
correct transition between pulsing
4.3.4 Infrastructure related and blocking of line converter
topics
5.3.2 Demonstration of compliance
for static converters by:
- Assessing
...