FprEN 50388-2:2024

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

This document establishes the acceptance criteria according to EN 50388-1:2022, 10.2 for compatibility between traction units and power supply for known phenomena and known technologies. That is in relation to: — co-ordination between controlled elements and also between these elements and resonances in the electrical infrastructure in order to achieve network system stability; — co-ordination of harmonic behaviour with respect to excitation of electrical resonances. The following electric traction systems are within the scope: — railways; — guided mass transport systems that are integrated with railways; — material transport systems that are integrated with railways. Public three-phase networks are out of the scope, but networks which are dedicated to railways are included. This document is applied in accordance with the requirements in EN 50388-1:2022, Clause 10. It does not apply retrospectively to rolling stock or railway power supply elements already in service. It is the aim of this Part 2 to support acceptance of new elements (rolling stock or infrastructure) by specifying precise requirements and methods for demonstration of compliance. This document acts as “code of practice” quoted in EN 50388-1:2022, 10.2. However, it is still admissible to use the process as defined in EN 50388-1:2022, 10.3 instead. This version of the standard only applies to AC systems. Later versions might include similar effects in DC networks in addition, see Annex D. The main phenomena identified and treated in this document are: — electrical resonance stability; — low frequency stability; — overvoltages caused by harmonics. The interaction with signalling (including track circuits) is not dealt with in this document.

Ortsfeste Anlagen und Bahnfahrzeuge für Bahnanwendungen - Technische Kriterien für die Koordinierung zwischen elektrischen Bahnenergieversorgungssystemen 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 - Partie 2 : Stabilité et harmoniques

Le présente document établit les critères d'acceptation conformes à l'EN 50388-1:2022, 10.2, qui assurent la compatibilité entre les unités motrices et l'alimentation, pour les phénomènes et les technologies connus. Cela concerne : — la coordination entre les éléments commandés ainsi qu'entre ces éléments et les résonances de l'infrastructure électrique, afin d'assurer la stabilité du système dans le réseau ; — la coordination du comportement vis-à-vis des harmoniques par rapport à l'excitation des résonances électriques. Les systèmes de traction électrique suivants relèvent du domaine d'application du présent document : — les réseaux ferroviaires ; — les réseaux de transport en commun guidés intégrés aux réseaux ferroviaires ; — les réseaux de transport de matériaux intégrés aux réseaux ferroviaires. Les réseaux électriques publics triphasés ne relèvent pas du domaine d'application du présent document, mais les réseaux électriques dédiés aux réseaux ferroviaires sont couverts. Le présent document s'applique conformément aux exigences de l'EN 50388-1:2022, Article 10. Il ne s'applique pas rétroactivement aux matériels roulants ni aux composants du système d'alimentation électrique du réseau ferroviaire déjà en service. La présente Partie 2 traite de l'acceptation des nouveaux éléments (matériel roulant ou infrastructure) et spécifie notamment les exigences et méthodes de démonstration de la conformité. Le présent document constitue le « code de pratique » mentionné dans l'EN 50388-1:2022, 10.2. Toutefois, l'utilisation du processus défini dans l'EN 50388-1:2022, 10.3 demeure toujours admise. La présente version de la norme s'applique uniquement aux systèmes à courant alternatif. Des versions ultérieures pourraient inclure, en plus, des effets analogues dans les réseaux à courant continu (voir l'Annexe D). Les principaux phénomènes identifiés et traités dans le présent document sont les suivants : — la stabilité de résonance électrique ; — la stabilité à basse fréquence ; — les surtensions dues aux harmoniques. Les interactions avec la signalisation (y compris les circuits de voie) ne sont pas traitées dans le présent document.

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

General Information

• Status: Not Published
• Publication Date: 20-Feb-2025
• ICS: 29.280 - Electric traction equipment
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/SC 9XC - Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed i
• Current Stage: 5020 - Vote circulated - Formal Approval
• Start Date: 01-Nov-2024
• Due Date: 13-Aug-2025
• Completion Date: 01-Nov-2024
• Directive: 2016/797/EU - Directive (EU) 2016/797 of the European Parliament and of the Council of 11 May 2016 on the interoperability of the rail system within the European Union (Text with EEA relevance)
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Mandate: M/591 - Standardisation request to the European Committee for Standardisation and the European Committee for Electrotechnical Standardisation as regards railway products in support of Directive (EU) 2016/797
• Ref Project: kSIST prEN 50388-2:2024 - 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

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 50388-2:2024
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
oSIST prEN 50388-2:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 50388-2:2024
oSIST prEN 50388-2:2024
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

oSIST prEN 50388-2:2024
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
oSIST prEN 50388-2:2024
prEN 50388-2:2023 (E)
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.
oSIST prEN 50388-2:2024
prEN 50388-2:2023 (E)
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
oSIST prEN 50388-2:2024
prEN 50388-2:2023 (E)
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
...