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The TGV bullet train and the
Assets of Energy Commutation
Availability and continuity of energy supply are major issues for
Bullet Train railways like TGV. The new east European high speed
train line benefits from advanced equipments, providing optimizations of energy supply in the key points of the infrastructures.
TGV the fastest train in commercial operation
The fastest trains in commercial operation today are the
French Train à Grande Vitesse (TGV), the Japanese Shinkansen (or bullet train) and the German InterCity Express (ICE).
The TGV routinely travels at 300 kilometers per hour through
the French countryside and has been clocked at 515 kilometers
per hour in test runs.
TGV, using electric motors, has steel wheels that run on
steel tracks. To perform this incredible speed, TGV has aerodynamic designs to decrease wind resistance and, most of all,
requires special lines and infrastructure.
Improve functioning safety
TGV, which commenced operation in 1981, travels about
10 million passenger kilometers each year with none on-board
fatality thanks to its infrastructures and design.
In 2007, with the start of a new European High Speed
line, trains should be running routinely at 320 kilometers per
hour. This line will be equipped with new European Rail Traffic Management System (ERTMS) launched by German and
French railway companies. The aim of ERTMS is to harmonise
the European signaling system, but also to improve safety, and
rail network capacities, availability and punctuality.
In this frame work, the availability of electrical supply has
become a major issue to ensure safety through a reliable signaling system.
ARMATAN Enclosures
33 ARMATAN enclosures will be installed along the 300
kilometers of the new line. ARMATAN stands for Normalized
Alternative Voltage Supply Enclosures, in French “Armoire
d’Alimentation en Tension Alternative Normalisee”.
The aim of these enclosures is to distribute the electrical
energy to the signaling stations.
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Signaling Stations
Signaling Stations are not only used for signaling or keeping record for maintenance purposes but also to ensure many
different safety functions as detection of:
• Side winds,
• Seismic movement,
• Vehicles falling from a bridge on the railway,
•
Abnormal warm axle on the train.
SOCOMEC ATyS a must
Integrated into the ARMATAN enclosures, the automatic
transfer switch ensures the permutation between Main Supply
and Alternate Supply. With its innovative automatic transfer
switch ensuring Switching, Control and Monitoring, SOCOMEC ATyS has been selected to equip the ARMANTAN enclosure.
ATyS Advantages
Among all the assets of the ATyS that seduced the Head
Engineering Department of the French Railwail Company
(SNCF) are:
• The simple installation thanks to a Voltage Sensing Kit and Power Supply Kit,
• The compactness of the ATyS,
• The possibility of a remote control of the ATyS, al
lowing to choose at any time the most adapted pow
er supply.
Further uses of the ATyS for the railway systems
In the near future, other applications will benefit from the
potential of ATyS like the heating of the course switching system. Other applications where the security and energy optimizations functions are key success factors.
Lignes de Force­ • N. 14 • December 2005
The TGV bullet train and the Assets of Energy Commutation
“ATyS has none equivalent”
ATyS in short
At the Head Engineering Department of the SNCF,
Sebastien Chameyrat is very pleased of the SOCOMEC Automatic Transfer Switch choice, for which
he has more applications in mind.
What were the technical specification you
provided to the engineers in charge of the
energy distribution?
Thanks to the experience related to the building
of the TGV Mediterranean Line, the technical
specifications had to take into account the minimization of the space required for the installation
in order to reduce real estate costs. As a result,
solutions had to be compact, efficient and offering a good technical-economical ratio.
What role does the power supply permutation plays?
Two power supplies exist: the EDF (French
Electricity Board) network and the train overhead lines. Thanks to the ATyS, the choice of the
power supply can be done at any time. A permutation threshold toward the second power supply
can be programmed in function of the network
quality.
ATyS 6m from 125 to 1600A
33 ARMATAN enclosures
equip the Signaling Stations
along the new est European
bullet train line.
How many ATyS have been installed
so far?
In December 2005, 85% of the ARMATAN were installed and tests were
carried out. In view of the first integration, we are considering generalizing the
use of ATyS: the supply panel ARIAL on
classical train lines and 30 course switch
centers are being equipped nowadays.
By Emmanuel IGOT
Did you recommend the ATyS to the installation company?
You need to know that no other product features
two switched mounted head-to-tail that automatically ensures the load switching. On top of it the
system is equipped with a measurement device
and an alarm loop for a better versatility.
Supply panel ARIAL are equiped with motorized
changeover switches
With the ATyS device,
SOCOMEC offers the sole
product dedicated to the
strategic function of automatic supply commutation
which is fully compliante
with the norm IEC 609476-1.
ATyS is fully “Plug &
Play” and offers motorized
commutation of two load
break switch mechanically
interlocked. It is also equiped of a emergency manual
control.
An electronic module ensure
the monitoring of the power
supply and the control of
the commutation. On the
front panel of the ATyS, an
egonomic interface will help
you programming, monitoring and communicating with
the equipment.
Professional Talk Thierry Jost, Product Manager at SOCOMEC
Power supply supervision
The automation of the permutation Normal/Emergency on the
ATyS system has been designed according to the IEC 60947-6-1. It
integrates a precise and adjustable detection of the presence of the
normal or emergency power supply. This function makes it possible
to monitor the network voltage, frequency and phases rotation in
order to:
•
Detect abnormal performances of the power supply in
use (long term drift outward of the voltage limits) and start the
permutation process. Supplied by the commuting power supplies,
ATyS integrates a capacitor allowing to postpone the starting up of
substitute or emergency power supply without requiring external
power supply (like 12 or 24V DC). Thanks to the dimensions of
the systems, the micro processor can be supplied 60s after the loss
of the power supply, allowing the flip of a latch relay to turn on a
Genset for example.
•
Validate the presence of the substitute of emergency power
supply. A checking of a similar phases rotation of both power supply is also performed for a transfer with full security.
Optimization of energy consumption
Thanks to the supervision of the power supply, the energy cost
can as well be optimized: the permutation on the power supply
can be programmed according to different energy rate during time
slots. Test, permutations can be performed remotely thanks to a
function of communication.
Lignes de Force­ • N. 14 • December 2005
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