1、BS EN 50124-2:2017Railway applications Insulation coordinationPart 2: Overvoltages and related protectionBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 50124-2:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50124-2:2
2、017. It supersedes BS EN 50124-2:2001 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GEL/9, Railway Electrotechnical Applications.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does
3、not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 86077 5 ICS 29.080.01; 29.280; 45.020 Compliance with a British Standard cannot confer im
4、munity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 50124-2:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50124
5、-2 March 2017 ICS 29.080.01; 29.280 Supersedes EN 50124-2:2001English Version Railway applications - Insulation coordination - Part 2: Overvoltages and related protection Applications ferroviaires - Coordination de lisolement - Partie 2: Surtensions et protections associes Bahnanwendungen - Isolatio
6、nskoordination - Teil 2: berspannungen und zugeordnete Schutzmanahmen This European Standard was approved by CENELEC on 2017-02-06. 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
7、standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A versi
8、on 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,
9、Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switz
10、erland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rights of exploitation in
11、any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50124-2:2017 EBS EN 50124-2:2017EN 50124-2:2017 (E) 2 Contents Page European foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references 5 3 Terms and Definitions . 5 4 Contact line network 6 4.1 Equipment not protect
12、ed by a metal-oxide arrester . 6 4.2 Equipment protected by a metal-oxide arrester . 6 4.2.1 General . 6 4.2.2 Simulation for long pulse 6 4.2.3 Simulation for short pulse . 9 5 Train line network 9 5.1 Equipment not protected by a metal-oxide arrester . 9 5.2 Equipment protected by a metal-oxide ar
13、rester . 10 6 Tests . 10 Annex A (informative) Maximum value of voltage U according to duration 11 Annex ZZ (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC . 13 Tables Table 1 Values of the reference voltage Up. 7 Table A.1 Overvolt
14、ages 12 Table ZZ.1 Correspondence between this European Standard, the TSI “Locomotives and Passenger Rolling Stock” (REGULATION (EU) No 1302/2014 of 18 November 2014) and Directive 2008/57/EC . 13 Table ZZ.2 Correspondence between this European Standard, the TSI “Energy” (REGULATION (EU) No 1301/201
15、4 of 18 November 2014) and Directive 2008/57/EC . 13 BS EN 50124-2:2017EN 50124-2:2017 (E) 3 European foreword This document (EN 50124-2:2017) has been prepared by CLC/TC 9X, “Electrical and electronic applications for railways.” The following dates are fixed: latest date by which this document has
16、to beimplemented at national level by publicationof an identical national standard or byendorsement(dop) 20180206 latest date by which the national standardsconflicting with this document have tobe withdrawn(dow) 20200206 This document supersedes EN 50124-2:2001. Attention is drawn to the possibilit
17、y that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association,
18、and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. BS EN 50124-2:2017EN 50124-2:2017 (E) 4 Introduction This European Standard is part of the EN 50124 series, Railway applications Ins
19、ulation coordination. EN 50124 consists of two parts: EN 50124-1, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment; EN 50124-2, Railway applications - Insulation coordination - Part 2: Overvolt
20、ages and related protection. This Part 2 deals with the shortest durations of overvoltages referred to as Zone A and Zone B in Figure A.1 in Annex A. BS EN 50124-2:2017EN 50124-2:2017 (E) 5 1 Scope This European Standard applies to: fixed installations (downstream of the secondary of the substation
21、transformer) and rolling stock equipment linked to the contact line of one of the systems defined in EN 50163; rolling stock equipment linked to a train line. This European Standard gives simulation and/or test requirements for protection against transient overvoltages of such equipment. Long-term o
22、vervoltages are not addressed in this document. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition
23、 of the referenced document (including any amendments) applies. EN 50163:2004, Railway applications - Supply voltages of traction systems EN 50533, Railway applications - Three-phase train line voltage characteristics EN 60099-4, Surge arresters - Part 4: Metal-oxide surge arresters without gaps for
24、 a.c. systems (IEC 60099-4) 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply: NOTE The definitions are in accordance with those of EN 50163 (see also Annex A). Long-term, medium-term and short-term overvoltages are equivalent to respectively tempor
25、ary, switching and lightning overvoltages defined in EN 606641. 3.1 Voltages 3.1.1 overvoltage voltage having a peak value exceeding the corresponding peak value of maximum steady-state voltage at normal operating conditions SOURCE: EN 60664-1 3.1.2 long-term overvoltage overvoltage at relatively lo
26、ng duration due to voltage variations Note 1 to entry: A long-term overvoltage is independent of the network load. It is characterized by a voltage/time curve. BS EN 50124-2:2017EN 50124-2:2017 (E) 6 3.1.3 transient overvoltage short duration overvoltage of a few milliseconds or less due to current
27、transfer Note 1 to entry: A transient overvoltage depends on the network load. It cannot be characterized by a voltage/time curve. Basically, a transient overvoltage is the result of a current transfer from a source to the load (network). 3.1.4 medium-term overvoltage transient overvoltage at any po
28、int of the system due to specific switching operation or fault 3.1.5 short-term overvoltage transient overvoltage at any point of the system due to a specific lightning discharge 3.2 network set of conductors fulfilling a certain function, the overvoltages of which are likely to damage the equipment
29、 they are connected to 4 Contact line network NOTE The provisions of this Clause 4 do not take into account rapid transient overvoltages in the multimegahertz range such as generated by operation of vacuum circuit breakers which may require a specific overvoltage protection. 4.1 Equipment not protec
30、ted by a metal-oxide arrester If the equipment is not protected by a metal-oxide arrester, the protection against overvoltages shall take into account overvoltages limited only by the intrinsic insulation of the contact line and the possible presence of other types of arrester or spark gaps. 4.2 Equ
31、ipment protected by a metal-oxide arrester 4.2.1 General If the supplier wants to benefit from the presence of a metal-oxide arrester for reducing constraints resulting from 4.1, the supplier shall perform a simulation of the behaviour of the equipment with its protection against overvoltages accord
32、ing to 4.2.2 and 4.2.3. Long pulse overvoltages set out in 4.2.2 refers to Zone B in Figure A.1 for switching overvoltages and short pulse overvoltages set out in 4.2.3 refers to Zone A in Figure A.1 for lightning overvoltages. The circuits of the protected equipment likely to modify the electrical
33、behaviour of the protection shall also be simulated. The equipment connected to the contact line shall be able to withstand the overvoltages without damage, with the exception of the protective fuse, if any. 4.2.2 Simulation for long pulse 4.2.2.1 Simulation of switching overvoltage scenarios When s
34、pecified by the purchaser, the supplier shall perform a simulation of the behaviour of its equipment when there is a transient overvoltage due to current transfer between the contact line and the on-board electrical equipment. The purchaser shall provide the necessary information. BS EN 50124-2:2017
35、EN 50124-2:2017 (E) 7 EXAMPLE 1 The overvoltage is generated on the contact line in case of emergency disconnection of all traction converters of a train when they were running at full power. EXAMPLE 2 The overvoltage is generated on the contact line when a short circuit, occurring in one of the on-
36、board equipment input circuit, is cleared by a protection device (e.g. d.c. circuits breaker, fuse). NOTE The parameters affecting such simulation are for example: line impedance (inductance and resistance per km), train architecture (e.g. number and type of converters, power diagram), converter pow
37、er, converter input circuit characteristics (e.g. inductance, capacitance), characteristics of the protection device clearing the short-circuit current (e.g. tripping current or pre-arcing current, turned off current, arc voltage). EN 50388:2012, Clause 11 and Annex D provide limits for short circui
38、t levels and typical values for the line and source impedances for TSI lines. When the necessary information cannot be obtained from the purchaser, the supplier shall perform the simulation for the conventional long pulse as described in 4.2.2.2. 4.2.2.2 Conventional long pulse The conventional long
39、 pulse is a voltage pulse of trapezoid shape. The pulse duration is 2 ms, with a rise time t2of 1,5 ms, a plateau time t3of 0,3 ms and a fall time t4of 0,2 ms. The peak value of the resulting overvoltage signal is equal to 70 % of the reference voltage Updefined in Table 1. The overvoltage is applie
40、d to the equipment at the line contact as a null impedance voltage source and without considering the presence of its metal-oxide arrester. Table 1 Values of the reference voltage UpNominal voltage according to EN 50163 UnkV Reference voltage UpkV 0,75 4 1,5 6 3 12 15 60 25 100 NOTE The values of Up
41、 take into account the values of Ures as given in IEC 600991 and EN 600994 and/or Upl as given in EN 505261. But they relate to a theoretical arrester, for simulation purposes only, and present not any direct link to Ures of IEC 600991 and EN 600994 and/or Upl of EN 505261. Figure 1 shows the conven
42、tional long pulse used for d.c. contact lines. The trapezoid shape is superimposed on the nominal d.c. line voltage and the starting time has no relevance. BS EN 50124-2:2017EN 50124-2:2017 (E) 8 Key t1: t.b.d Time to beginning of long pulse t2: 1,5 ms Rise time t3: 0,3 ms Plateau time t4: 0,2 ms Fa
43、ll time Un: see Table 1 Nominal voltage Up: see Table 1 Reference voltage Figure 1 Conventional long pulse used for d.c. contact lines Figure 2 shows the conventional long pulse used for a.c. contact lines. The trapezoid shape is superimposed on the nominal a.c. sinewave voltage and the starting tim
44、e t1shall be varied within 45 electrical degrees around the peak voltage of the sine wave. BS EN 50124-2:2017EN 50124-2:2017 (E) 9 Key t1: t.b.d Time to beginning of long pulse t2: 1,5 ms Rise time t3: 0,3 ms Plateau time t4: 0,2 ms Fall time Un: see Table 1 Nominal voltage Up: see Table 1 Reference
45、 voltage Figure 2 Conventional long pulse used for a.c. contact lines 4.2.3 Simulation for short pulse The short pulse is the 4/10 s current pulse defined in EN 60099-4. Its amplitude value is 100 kA. It is applied to the equipment including the arrester, where the metal-oxide arrester is replaced b
46、y a theoretical one the characteristic of which, in log(current in kA) versus log(voltage in kV), is a straight line which includes the two points: (log(10), log(Up) and (log(100), log(1,5 x Up) (1) NOTE The safety margin 1,5 x Up takes into account residual voltages of the surge arrester at lightni
47、ng impulse currents higher than 10 kA, induced voltage drops along the arrester and the connection lines and voltage increases due to travelling wave effects on the line between the surge arrester and the equipment. 5 Train line network 5.1 Equipment not protected by a metal-oxide arrester If the eq
48、uipment is not protected by a metal-oxide arrester, EN 50533 shall be applied for 3phase train lines. NOTE For single phase train line networks, UIC 550 can provide guidance. BS EN 50124-2:2017EN 50124-2:2017 (E) 10 5.2 Equipment protected by a metal-oxide arrester If the equipment is protected by a
49、 metal-oxide arrester, the overvoltage can be limited according to the characteristics of the metal-oxide arrester and the train line network. In case of connection of several arresters to the train line, it shall be ascertained that their cascading will not lead to damage. 6 Tests In case of doubt of the model and/or the parameters to be taken into account in the simulation, investigation tests shall be carried out and the simulation improved until an acceptable level of trust is reached. The supplier shall ascertain that each com
