High speed catenaryDecember 2012

CONFIDENCE MOVES THE WORLD

Overview

Test and comisionning

1.Main catenary characteristics and power supply2.

Speed world record : 574,8km/h

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1. Historical

3.Feedback

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1.

Over 50 years of public transportation experience

Our experience fuels the entrepreneurial spirit that drives us every day

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High Speed line - Historical

The French national railway and SYSTRA have a long experience on High Speed Line.

• 1981 February: World record speed at 380km/h,• 1981 September: Paris South East LGV (speed limit: 260km/h),• 1989 September: Atlantic LGV (speed limit: 300km/h),• 1990 May: World record speed at 515.3km/h,• 1993 May: North LGV (speed limit: 300km/h),• 1994 May: Channel tunnel “Eurostar”,• 2001 June: Mediterranean LGV (speed limit: 300km/h),• 2007 April: New World record speed at 574.8km/h,• 2007 June: East European LGV (speed limit: 320km/h),

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Over 50 years of public transportation experience…

Main characteristics catenary and power supply

Main Catenary Characteristics

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Mechanical requirements must be met

A permanent contact with the pantograph to ensure continuous feeding of traction current,

A moderated uplift to reduce the effect of the wave propagated and optimize the behavior of the following pantographs

A contact force between the pantograph and the contact wire as less as possible without creating a loss of contact, for minimizing the wear of the contact wire and of the pantograph carbon bands,

Minimize the vertical movements and the hard points to reduce the phenomena of electrical arcs and flashes,

A regular wear on the entire width of the pantograph carbon band to minimize the maintenance.

Main Catenary Characteristics

These criteria must also be reliable:

Taking into account of the lateral movements of the current collection device due to the reactions of the rolling equipment circulating on the track (centrifugal force, deformations in the suspension gear, track defects transmitted to the bodies ...

Whatever the weather conditions (temperature variation, effect of wind on the catenary),

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Main Catenary Characteristics

The main mechanical criteria which must, therefore be respected are :

Constant height of contact plane (5,08 m / rolling surface for example in France),

200 mm maximum stagger in track alignment, with respect to the pantograph axis so as to spread the wear,

mast and facilities systems leaving the passage clear for circulation of the trains, according some installation rules with respect to the "Clearance" of the rolling stock, but also with respect to the track to allow installation and maintenance of the track parts.

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Main Power supply Characteristics

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Electrical requirements must be met

Transmission of traction current continuously to the rolling stock, taking into account the operating conditions and the maintenance,

Obtain the longer space between two sub stations and decrease the voltage losses,

Ensuring the safety of facilities and public with a clean and immediate switch off in case of any installation default,

Respect the air gap clearance between live parts and rolling stock, between live parts and the public whatever the weather conditions,

Quickly detect electrical incidents.

Main Power supply Characteristics

The main electrical criteria which must, therefore be respected are:

A power supply made of 2 x 25 kV AC – 50 Hz with autotransformers in Europe. This solution allows about 60 km spacing between 2 substations with some autotransformers placed every 10 km,

A power supply model based on separated tracks : that allows to isolate electrical or catenary incident and to continue the exploitation,

All metallic parts are connected together with a protection circuit (aerial and buried earth wire),

The use of phase breaker between to substation.

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Principle of power supply : 2 x 25 kV AC – 50 Hz

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Catenary

Autotransformer Sub Station

i<<I

I

2 x I

Rail

A B

C

D

Negative Feeder

50 kV

25 kV

Examples of power supply equipment

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Main Characteristics

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Main Characteristics table

Electrification 2 x 25000 V ACpower supply separated mode

Commercial speed 320 km/h

Maximum span 63 m in track alignment

Auto-tensionning Yes (both contact and messenger wire)

Height of contact wire 5,08 m in France

Encumbrance 1,40 m at the suspension

Fitting design

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Main wire Characteristics

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Catenary Characteristics

Messenger wire Type Bronze 116 mm²

Tension 20 kN

Contact wire Type Copper 150 mm²

Tension 25 kN

Droppers Type Bronze cable 12 mm² with jumpers

Main wire Characteristics

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Negative feeder Type Al Steel 288 mm²

Tension 9 kN at 15 °C

OCS Copper equivalent section 203.5 mm²

Overhead protection conductor

Type AL-Steel 93,3 mm²

Tension 4 kN

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Testing and commisionning

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3.

Test & Commissioning

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Once the high speed line is built, Systra will methodically carry out the line testing.

We will undertake the safety case, safety checks and test the implementation of each component until the line can enter into service.

Our unique expertise

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Feedback

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How to improve the design in High Speed Rail ?

Contributed to every French High Speed Rail line (over 2,000 km - 1,243 mi)The SEA project (South East of Atlantic) : about 300 km of double tracks, test and

commissioning 2017,

Over 30-years experience of developing high speed rail networks throughout the world and with the help of simulation softwares (Esmeralda, Oscar, etc.),

Unique rail operator experience through SNCF ownership,Our collaboration with SNCF allows us to benefit from their experience feedback

Try to beat, when it’s possible, our High Speed Rail World record (574.8 km/h - 357.2 mph).

Esmeralda : Dimensionning and optimizing the power supply sizing

This software allows:

to dimension the traction installations for a given level,

to compare power supply solutions,

to verify if existing equipment can cope with changes in traffic, characterized by one or more parameters (reduced headway, increased loads, higher speeds, ,etc.)

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Oscar : pantograph-catenary dynamic interaction behavior

This software allows to :

Simulate the behavior of the any kind of catenary with one or several pantographs (calculate the uplift, the mean load, the maximum and minimum load)

Tackle the challenge of increasing speed,

Determine the overheating.

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SNCF Feedback

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5.

World record speed at 574,8km/h

East European Line : speed world record

Characteristics of TGV East European line

Length: ≈ 300 kilometers,

Very High Voltage (VHV) at the primary side of the traction transformer : 225000 Volts and 400000 Volts,

Traction substations: 5 (2x27500V – 50Hz),

Autotransformers: 22.

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Data

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Main modifications required to perform the speed world record

CATEGORY DESIGNATIONS ORIGIN MODIFICATIONS

Catenary / PowerMechanical tension of the contact wire 2500 daN 4000 daN

Voltage 27.5 kV 31kV

THANK YOU

CONFIDENCE MOVES THE WORLD