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Conférence TechnoArk 2016

Energy efficiency with

adaptive control ADL

Philipp Keiser

Sierre, 29.01.2016

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SBB's energy

strategy.

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SBB Energy Strategy:Five strategic objectives.

Upgrade hydropower

plants.

Optimise

the network.

Energy

Efficiency.

Procure

renewable

energy.

1

4 2

5

End investment

in nuclear power

plants.

3

SBB • Infrastructure • Energy Management • 2016 3

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Our installations and our challenges.

SBB • Infrastructure • Energy Management • 2016 4

By 2030: The expansion of

railway services will require

25% more energy – and even

40% at peak times.

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Energy-saving programme – objectives and structure.

Anchor energy efficiency in the company.

Efficiency on the move:

Target of 600 GWh/year from 2025.

Create transparency and manage energy consumption.

SBB • Infrastructure • Energy Management • 2016 5

Rail servicesEngineeringDevelopment of

services

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Adaptive control

(ADL).

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Initial position.

SBB • Infrastructure • Energy Management • 2016 7

As demand is constantly increasing, SBB is reaching its limits in

terms of network capacity and timetable stability.

Train-path kilometres are expected to increase by 30% between

now and 2030.

The high level of integration between planning (scheduling) and

implementation (the performance of our train drivers) improves

precision in the production system. Despite the extra strain,

timetable stability is increased.

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Increased precision in production.

Calculating energy-optimised and ergonomic journey lines.

Supporting train drivers in their choice of driving strategy.

Reduced energy consumption when driving.

Reduction in avoidable stops at signals.

Increasing the number of braking operations with electrical

brakes.

SBB AG • Infrastructure • ADL Project • 22.04.2014

Project goals.

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Energy demand for a stop.

0

100

50

150

A Bx

Energy difference:

100 km/h – 0 km/h – 100 km/h

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Simplified schematic representation:

A freight train (1,200 t) is travelling on route A–B at the permitted

speed of 100 km/h.

Full stop at point x due to red signal:

Energy needed for the conflict stop: 147 kWh

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Energy demand for a stop.

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En

erg

y d

em

an

d i

n k

Wh

.

Speed in km/h.

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The link between dispatchers and train

drivers.SBB • Infrastructure • Energy Management • 2016 11

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ADL – the link between dispatchers

and train drivers.SBB • Infrastructure • Energy Management • 2016

Rail Control System (RCS)

- Identifying occupation conflicts

- Determining the order of trains

- Identifying unplanned signal stops

- Defining the optimisation corridor

GSM-R

GSM-PLEA2 / LEA3

Adaptive control

- Calculates the optimum speed profile

- Sends driving recommendations to the

train driver

Data

SMS

Data

12

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approx. 2 sec.

Conflict pointConflict detection RCS

Double-check

the forecast

Speed advisory

Train speed profile (static)

Free run

message

Avoiding conflicts.

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Example of ADL optimisation

Fast slow fast

100

100

50

522 50232 1822

Vopt 50 km/hVopt 100 km/hVopt 100 km/h

Freight train 50232 is optimised between 522 and 1822. Here, the system must prevent 50232

from having to make an unplanned stop while ensuring that 1822 does not arrive late in Lenzburg.

In order to solve this problem, ADL first calculates a high speed. As soon as 1822's arrival in

Lenzburg is ensured, Vopt can be reduced to allow the train to continue on behind 522 without any

conflicts.

LenzburgAarau

ADL ENDADL END

Train50232

SBB • Infrastructure • Energy Management • 2016 14

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42 GWh: Wil, St. Gallen

Energy saved in 2015.

SBB • Infrastructure • Energy Management • 2016 15

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Watt d’Or 2016:

Energy-efficient mobility

Traffic

34%Air

"The Watt d'Or 2016 in the

category ‘energy-efficient

mobility’ goes to SBB for

the innovative ADL system

– a system like no other in

the world."

RoadHouseholds

Industry

Service

sector

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Thank you for your attention.


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