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© ABB Group November 20, 2015 | Slide 1
ENVILINE EMS Energy Management System for Braking Train Energy Recovery
ABB Poland 2015 Maciej Kordas – Rail Conference Siofok 2015
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Acceleration Constant
speed Coasting
Braking
Traction
Power
Station
stop
The braking energy opportunity ENVILINE recovers the braking energy
Acceleration Constant
speed Coasting
Only a few kilowatt hours,
each time, but thousands of
times every day Back to AC
© ABB Group November 20, 2015 | Slide 4
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Recovery of the Surplus Braking Energy
Receptivity from on-board loads
System Receptivity, high in peak, low in off-
peak hours
~40-50%
5-20% Energy Savings
Recoverable excess braking
energy
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ENVILINE ESS with super capacitors Captures braking energy, sustains acceleration
© ABB Group November 20, 2015 | Slide 4
MV/HV Network
DC +
DC -
Legend
TDR
ESS energy storage - breaking
TDR energy rectification - acceleration
AC ~
ESS
ESNA 2014, Innovation Award
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ENVILINE ESS Energy Storage System
© ABB Group November 20, 2015 | Slide 5
Applications
Braking energy management with no AC connection needed
Benefits
Reduces energy costs
Improves quality of DC power network
Provides quick payback
End customers
Transit authorities, DC traction system owners / operators
Integrators, engineering companies
Operating voltage range: 500 – 1000 VDC 1000 – 1850 VDC
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Starting Power and Demand Charge A major cost item for Transit Authorities
Car analogy
Odometer indicates the amount of energy, or “Energy Consumption”,
Speedometer indicates the power level, or “Demand Charge”,
Utility customers pay for consumption (“mileage”), but also
significantly for demand (“maximum speed”)
43% of
the cost
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0
5
10
15
20
0
500
1 000
1 500
2 000
2 500
1 3 5 7 9 11 13 15 17 19 21 23
Daily consumption profile
kW
h / h
r
Tra
ins p
er
ho
ur
Beyond the Utility Metered Demand Charge Power peaks well beyond the measured demand
0
1000
2000
Today’s Demand Charge
“15-min average consumption”
7:10 7:20 7:30
7:10 7:20 7:30
Actual Demand
0
2000
4000
6000
Today’s demand charge is based on the kWh consumption during a 15-minute window
The real demand is much higher, imposing a worse strain on the grid than reflected by the rate
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Energy & Demand Cost Evolution Shift from energy toward power mitigation focus
© ABB Group November 20, 2015 | Slide 8
2010 2011 2012 2013
Energy cost ($ / year)
2010 2011 2012 2013
Demand Charge ($ / year)
Data is courtesy of Valley Metro in Phoenix
Average Demand Charge increased 19.5%
in California over last 3 years
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ENVILINE ESS recovers the braking energy And reduces the starting power demand from the grid
-1500
-500
500
1500
2500
3500
4500
5500
Time
(Seconds)
Cu
rre
nt
(Am
p)
ESS supply
Utility supply
Braking Energy
recovered by ESS
Train power
0 10 20 30 40 50 60
ESS reduces the
starting power draw
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ENVILINE ESS - Off Grid Operation #3 – Increases power capacity with no grid connection
© ABB Inc. November 20, 2015 | Slide 10
Trickle charge energy
Supplies the power without any grid connection
Charges during coasting and braking, idle time
Possibility of complementary battery if energy requirements are high (ie peak periods)
SS1
Braking energy
Trickle charge
SS3
Braking charge
Off-grid
Trickle charge
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Metro Trains Melbourne - MTM Westona Mid-Span Voltage Support
© ABB Group November 20, 2015 | Slide 11
Substations
Area of voltage problem
Configuration of ENVILINE modules for a total capacity of 2.2 MW / 24 MJ with super capacitors
Traction support and energy recuperation
Cost of deployment at 40% of a traditional substation solution, with on-going energy savings
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ENVILINETM Energy Storage Webinar Rail Industry challenges
© ABB
Rail operators amongst the largest electricity consumers
A substation consumes as much as 500-750 homes
Extremely high and rising peak power demand
Higher starting power of new trains
Sustainability and energy efficiency improvement targets
Courtesy of Metro Trains Melbourne Orange = train capacity / Blue = power limitation
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© ABB Group November 20, 2015 | Slide 13
Warsaw Metro Line 2, Poland Braking and Gravitational Energy Recovery
10 module ENVILINE configuration with a total capacity of 3.3MW / 40 MJ with super capacitors
Dimensioned to capture the braking and gravitational energy of the trains
Weekly and weekend average savings: 3MWh/day
Stadion
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© ABB | BU Motors and Generators November 20, 2015 | Slide 14
ENVILINE on the web www.abb.com/enviline
www.abb.com/enviline
www.abb.com/enviline
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© ABB Group November 20, 2015 | Slide 15