© 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

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

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

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

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

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

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

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

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

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

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

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

© 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

© 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

© ABB Group November 20, 2015 | Slide 15