4.2.<Strong>Functional and technical specifications of the subsystem</Strong>4.2.1.<Emphasis>General provisions</Emphasis>The performance to be achieved by the energy subsystem is specified at least by the required performance of the rail system with respect to:
maximum line speed;type(s) of train;train service requirements;power demand of the trains at the pantographs.
4.2.2.<Emphasis>Basic parameters characterising the energy subsystem</Emphasis>The basic parameters characterising the energy subsystem are:
Power supply:Voltage and frequency (4.2.3);Parameters relating to supply system performance (4.2.4);Current capacity, DC systems, trains at standstill (4.2.5);Regenerative braking (4.2.6);Electrical protection coordination arrangements (4.2.7);Harmonics and dynamic effects for AC traction power supply systems (4.2.8).Geometry of the OCL and quality of current collection:Geometry of the overhead contact line (4.2.9);Pantograph gauge (4.2.10);Mean contact force (4.2.11);Dynamic behaviour and quality of current collection (4.2.12);Pantograph spacing for overhead contact line design (4.2.13);Contact wire material (4.2.14);Phase separation sections (4.2.15);System separation sections (4.2.16).On-ground energy data collecting system (4.2.17)Protective provisions against electric shock (4.2.18)
4.2.3.<Emphasis>Voltage and frequency</Emphasis>The voltage and frequency of the energy subsystem shall be one of the four systems, specified in accordance with Section 7:AC 25 kV, 50 Hz;AC 15 kV, 16,7 Hz;DC 3 kV;DC 1,5 kV.The values and limits of the voltage and frequency shall comply with EN 50163:2004, clause 4 for the selected system.
4.2.4.<Emphasis>Parameters relating to supply system performance</Emphasis>The following parameters shall be taken in consideration:
maximum train current (4.2.4.1);power factor of trains and the mean useful voltage (4.2.4.2).
4.2.4.1.<Expanded>Maximum train current</Expanded>The energy subsystem design shall ensure the ability of the power supply to achieve the specified performance and allow the operation of trains with a power less than 2 MW without power or current limitation.
4.2.4.2.<Expanded>Mean useful voltage</Expanded>The calculated mean useful voltage ‘at the pantograph’ shall comply with EN 50388:2012, clause 8 (except clause 8.3 that is replaced by point C.1 of Appendix C). Simulation shall take into account values of the real power factor of trains. Point C.2 of Appendix C provides additional information to clause 8.2 of the EN 50388:2012.
4.2.5.<Emphasis>
Current at standstill (DC systems only)
</Emphasis>The OCL of DC systems shall be designed to sustain 300 A (for a 1,5 kV supply system) and 200 A (for a 3 kV supply system), per pantograph when the train is at standstill.The current capacity at standstill shall be achieved for the test value of static contact force given in table 4 of clause 7.2 of EN 50367:2012.The OCL shall be designed taking into account the temperature limits in accordance with EN 50119:2009, clause 5.1.2.
4.2.6.<Emphasis>Regenerative braking</Emphasis>AC power supply systems shall be designed to allow the use of regenerative braking able to exchange power seamlessly either with other trains or by any other means.DC power supply systems shall be designed to permit the use of regenerative braking at least by exchanging power with other trains.
4.2.7.<Emphasis>Electrical protection coordination arrangements</Emphasis>Electrical protection coordination design of the energy subsystem shall comply with the requirements detailed in EN 50388:2012, clause 11.
4.2.8.<Emphasis>Harmonics and dynamic effects for AC traction power supply systems</Emphasis>The interaction of traction power supply system and rolling stock can lead to electrical instabilities in the system.In order to achieve electrical system compatibility, harmonic overvoltages shall be limited below critical values according to EN 50388:2012, clause 10.4.
4.2.9.<Emphasis>Geometry of the overhead contact line</Emphasis>The overhead contact line shall be designed for pantographs with the head geometry specified in the LOC & PAS TSI, point 4.2.8.2.9.2 taking into account the rules set out in point 7.2.3 of this TSI.The contact wire height and the lateral deviation of the contact wire under the action of a cross-wind are factors which govern the interoperability of the rail network.
4.2.9.1.<Expanded>Contact wire height</Expanded>The permissible data for contact wire height is given in Table 4.2.9.1.For the relation between the contact wire heights and pantograph working heights see EN 50119:2009 figure 1.At level crossings the contact wire height shall be specified by national rules or in the absence of national rules, according to EN 50122-1:2011, clauses 5.2.4 and 5.2.5.For the track gauge system 1 520 and 1 524 mm the values for contact wire height are as follows:Nominal contact wire height: between 6 000 mm and 6 300 mm;Minimum design contact wire height: 5 550 mm;Maximum design contact wire height: 6 800 mm.
4.2.9.2.<Expanded>Maximum lateral deviation</Expanded>The maximum lateral deviation of the contact wire in relation to the track centre line under action of a cross wind shall be in accordance to table 4.2.9.2.In the case of the multi-rail track, the requirement for lateral deviation shall be fulfilled for each pair of rails (designed, to be operated as a separated track) that is intended to be assessed against TSI.Track gauge system 1 520 mm:For Member States applying the pantograph profile according to LOC&PAS TSI, point 4.2.8.2.9.2.3 the maximum lateral deviation of the contact wire in relation to the pantograph centre under action of a cross wind shall be 500 mm.
4.2.10.<Emphasis>Pantograph gauge</Emphasis>No part of the energy sub-system shall enter the mechanical kinematic pantograph gauge (see Appendix D figure D.2) except for the contact wire and steady arm.The mechanical kinematic pantograph gauge for interoperable lines is specified using the method shown in Appendix D.1.2 and the pantograph profiles defined in LOC&PAS TSI, points 4.2.8.2.9.2.1 and 4.2.8.2.9.2.2.This gauge shall be calculated using a kinematic method, with values:for the pantograph sway epu of 0,110 m at the lower verification height h′u = 5,0 m andfor the pantograph sway epo of 0,170 m at the upper verification height h′o = 6,5 m,in accordance with point D.1.2.1.4 of Appendix D and other values in accordance with point D.1.3 of Appendix D.Track gauge system 1 520 mm:For Member States applying the pantograph profile according to LOC&PAS TSI, point 4.2.8.2.9.2.3 the static gauge available for pantograph is defined in point D.2 of Appendix D.
4.2.11.<Emphasis>Mean contact force</Emphasis>The mean contact force Fm is the statistical mean value of the contact force. Fm is formed by the static, dynamic and aerodynamic components of the pantograph contact force.The ranges of Fm for each of the power supply systems are defined in EN 50367:2012 Table 6.The overhead contact lines shall be designed to be capable to sustain the upper design limit of Fm given in EN 50367:2012 Table 6.The curves apply to speed up to 360 km/h. For speeds above 360 km/h procedures set out in point 6.1.3 shall apply.
4.2.12.<Emphasis>Dynamic behaviour and quality of current collection</Emphasis>Depending on the assessment method, the overhead contact line shall achieve the values of dynamic performance and contact wire uplift (at the design speed) set out in Table 4.2.12.S0 is the calculated, simulated or measured uplift of the contact wire at a steady arm, generated in normal operating conditions with one or more pantographs with the upper limit of Fm at the maximum line speed. When the uplift of the steady arm is physically limited due to the overhead contact line design, it is permissible for the necessary space to be reduced to 1,5S0 (refer to EN 50119:2009, clause 5.10.2).Maximum force (Fmax) is usually within the range of Fm plus three standard deviations σmax; higher values may occur at particular locations and are given in EN 50119:2009, table 4, clause 5.2.5.2. For rigid components such as section insulators in overhead contact line systems, the contact force can increase up to a maximum of 350 N.
4.2.13.<Emphasis>Pantograph spacing for overhead contact line design</Emphasis>The overhead contact line shall be designed for a minimum of two pantographs operating adjacently. The design spacing of the two adjacent pantograph heads, centre line to centre line, shall be equal or lower than values set out in one column ‘A’, ‘B’, or ‘C’ selected from Table 4.2.13:
4.2.14.<Emphasis>Contact wire material</Emphasis>The combination of contact wire material and contact strip material has a strong impact on the wear of contact strips and contact wire.Permissible contact strip materials are defined in point 4.2.8.2.9.4.2 of LOC&PAS TSI.Permissible materials for contact wires are copper and copper-alloy. The contact wire shall comply with the requirements of EN 50149:2012, clauses 4.2, (excluding the reference to annex B of the standard) 4.3 and 4.6 to 4.8.
4.2.15.<Emphasis>Phase separation sections</Emphasis>4.2.15.1.<Expanded>General</Expanded>The design of phase separation sections shall ensure that trains can move from one section to an adjacent one without bridging the two phases. Power consumption of the train (traction, auxiliaries and no-load current of the transformer) shall be brought to zero before entering the phase separation section. Adequate means (except for the short separation section) shall be provided to allow a train that is stopped within the phase separation section to be restarted.The overall length D of neutral sections is defined in EN 50367:2012, clause 4. For the calculation of D clearances in accordance to EN 50119:2009, clause 5.1.3 and an uplift of S0 shall be taken into account.
4.2.15.2.<Expanded>Lines with speed v ≥ 250 km/h</Expanded>Two types of designs of phase separation sections may be adopted, either:
a phase separation design where all the pantographs of the longest TSI compliant trains are within the neutral section. The overall length of the neutral section shall be at least 402 m.For detailed requirements see EN 50367:2012, Annex A.1.2, ora shorter phase separation with three insulated overlaps as shown in EN 50367:2012, Annex A.1.4. The overall length of the neutral section is less than 142 m including clearances and tolerances.
4.2.15.3.<Expanded>Lines with speed v < 250 km/h</Expanded>The design of separation sections shall normally adopt solutions as described in EN 50367:2012, Annex A.1. Where an alternative solution is proposed, it shall be demonstrated that the alternative is at least as reliable.
4.2.16.<Emphasis>System separation sections</Emphasis>4.2.16.1.<Expanded>General</Expanded>The design of system separation sections shall ensure that trains can move from one power supply system to an adjacent different power supply system without bridging the two systems. There are two methods for traversing system separation sections:with pantograph raised and touching the contact wire;with pantograph lowered and not touching the contact wire.The neighbouring Infrastructure Managers shall agree either (a) or (b) according to the prevailing circumstances.The overall length D of neutral sections is defined in EN 50367:2012, clause 4. For the calculation of D clearances in accordance to EN 50119:2009, clause 5.1.3 and an uplift of S0 shall be taken into account.
4.2.16.2.<Expanded>Pantographs raised</Expanded>Power consumption of the train (traction, auxiliaries and no-load current of the transformer) shall be brought to zero before entering the system separation section.If system separation sections are traversed with pantographs raised to the contact wire, their functional design is specified as follows:the geometry of different elements of the overhead contact line shall prevent pantographs short-circuiting or bridging both power systems;provision shall be made in the energy subsystem to avoid bridging of both adjacent power supply systems should the opening of the on-board circuit breaker(s) fail;variation in contact wire height along the entire separation section shall fulfil requirements set in EN 50119:2009, clause 5.10.3.
4.2.16.3.<Expanded>Pantographs lowered</Expanded>This option shall be chosen if the conditions of operation with pantographs raised cannot be met.If a system separation section is traversed with pantographs lowered, it shall be designed so as to avoid the electrical connection of the two power supply systems by an unintentionally raised pantograph.
4.2.17.<Emphasis>
On-ground energy data collecting system
</Emphasis>(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.18.<Emphasis>Protective provisions against electric shock</Emphasis>Electrical safety of the overhead contact line system and protection against electric shock shall be achieved by compliance with EN 50122-1:2011+A1:2011, clauses 5.2.1 (only for public areas), 5.3.1, 5.3.2, 6.1, 6.2 (excluding requirements for connections for track circuits) and regarding AC voltage limits for the safety of persons by compliance with 9.2.2.1 and 9.2.2.2 of the standard and regarding DC voltage limits by compliance with 9.3.2.1 and 9.3.2.2 of the standard.