jarman stephens - abb
TRANSCRIPT
21 FEBRUARY 2017
Innovations in Light Rail DC Traction NetworksLight Rail 2017Jarman Stephens - Area Rail Segment Specialist (AU-NZ) / Transportation Product Manager
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 2
Agenda
21 February 2017 Slide 3
Introduction
Light rail network operators must regularly develop their wayside power system to economically ensure a safe and reliable service.
Common Industry Challenges:
• Complicated and expensive land acquisition.
• Financial and corporate responsibility to decrease total network electricity use (kWh).
• Financial motivation to decrease electricity demand charge (kW).
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 4
Agenda
21 February 2017 Slide 5
Integrated Transformer Rectifier
Traction Rectifiers
DC Switchgear
Rectifier Transformers
AC MV Switchgear
MV/HV Network
DC +
AC ~
DC -
21 February 2017 Slide 6
Integrated Transformer Rectifier
Traction Rectifiers
DC Switchgear
Rectifier Transformers
AC MV Switchgear
MV/HV Network
DC +
AC ~
DC -
21 February 2017 Slide 7
Integrated Transformer Rectifier
Rectifier Transformer
Traction Diode Rectifier
21 February 2017 Slide 8
Integrated Transformer Rectifier
Benefits
- Volume reduction.
- No space required between units.
- Cabling reduction.
- Combined procurement, testing, documentation, shipping, installation and commissioning.
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 9
Agenda
21 February 2017 Slide 10
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
Acceleration
Constant
speed
Coasting
Braking
Traction
Power
Time
21 February 2017 Slide 11
Energy Management Solutions
Typical Light Rail Network
• Nominal Network Voltage: 750 VDC
• Line Resistance: 60 mΩ/km
• Tram Size: 40 tonne
• Stop Spacing: 500m – 1000m
• Headways: 5 min-30 min depending on common weekday/weekend scheduling.
• Speed Limit: 60 km/h
• Acceleration/Deceleration: 1 m/s2
• Electricity Price: 0.1 $AUD/kWh
21 February 2017 Slide 12
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
21 February 2017 Slide 13
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
750 VDC 720 VDC 730 VDC 750 VDC
21 February 2017 Slide 14
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
750 VDC
600 VDC
750 VDC
21 February 2017 Slide 15
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
21 February 2017 Slide 16
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
750 VDC 730 VDC 820 VDC 820 VDC
21 February 2017 Slide 17
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
21 February 2017 Slide 18
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
850 VDC 850 VDC 850 VDC 850 VDC
21 February 2017 Slide 19
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
850 VDC 850 VDC 850 VDC 850 VDC
Single Braking Event
Time ≈ 16 secondsEnergy ≈ 1 kWh
Value ≈ $0.10 AUDEmissions ≈ 1 kg of CO2-e
Australian Government Department of the Environment, “National Greenhouse Accounts Factors ,” July 2014.
Yearly Braking Events
Energy -> 000’s MWh
Value ≈ $000,000’s AUDEmissions ≈ 000’s tonnes of CO2-e
21 February 2017 Slide 20
Energy Management Solutions
Introduction MV/HV Network AC ~
DC +
DC -
• Voltage distribution on the traction network.
• Regenerative braking functionality.
• Utilisation of regenerative braking energy.
21 February 2017 Slide 21
Energy Management Solutions
Overview of SolutionsMV/HV Network AC ~
DC +
DC -
ERS TDR TDR
ESS
Energy Recuperation System (ERS)
Energy Storage System (ESS)
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 22
Agenda
21 February 2017 Slide 23
Energy Management Solutions
Energy Recuperation SystemMV/HV Network AC ~
DC +
DC -
ERS TDR
Energy Recuperation System (ERS)
21 February 2017 Slide 24
Energy Management Solutions
Energy Recuperation SystemMV/HV Network AC ~
DC +
DC -
ERS TDR
Energy Recuperation System (ERS) Benefits
• Energy savings• Provide rectification boost.
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 25
Agenda
21 February 2017 Slide 26
Energy Management Solutions
Energy Storage SystemMV/HV Network AC ~
DC +
DC -
TDR
ESS
Energy Storage System (ESS)
21 February 2017 Slide 27
Energy Management Solutions
Energy Storage SystemMV/HV Network AC ~
DC +
DC -
TDR
ESS
Energy Storage System (ESS)
(-)
(+)
21 February 2017 Slide 28
Energy Management Solutions
Energy Storage System - Benefits
• Energy savings
• Increased utilization of traction power substations and reduced peak demand charges.
• Avoid AC connection.
• Frequency Control Ancillary Service (FCAS) revenue.
21 February 2017 Slide 29
Energy Management Solutions
Energy Storage System - Benefits
• Energy savings
• Increased utilization of traction power substations and reduced peak demand charges.
• Avoid AC connection.
• Frequency Control Ancillary Service (FCAS) revenue.
Time (sec)
Po
wer
(W)
Vehicle Loading
21 February 2017 Slide 30
Energy Management Solutions
Energy Storage System - Benefits
• Energy savings
• Increased utilization of traction power substations and reduced peak demand charges.
• Avoid AC connection.
• Frequency Control Ancillary Service (FCAS) revenue.
Time (sec)
Po
wer
(W)
ESS Supply
Rectifier Supply
Vehicle Loading
21 February 2017 Slide 31
Energy Management Solutions
Energy Storage System - Benefits
• Energy savings
• Increased utilization of traction power substations and reduced peak demand charges.
• Avoid AC connection.
• Frequency Control Ancillary Service (FCAS) revenue.
21 February 2017 Slide 32
Energy Management Solutions
Energy Storage System - Benefits
• Energy savings
• Increased utilization of traction power substations and reduced peak demand charges.
• Avoid AC connection.
• Frequency Control Ancillary Service (FCAS) revenue.
Generation > Load Generation < Load
Frequency Frequency
21 February 2017 Slide 33
Energy Management Solutions
Overview of SolutionsMV/HV Network AC ~
DC +
DC -
Energy Recuperation System (ERS)
Energy Storage System (ESS)• Where should the unit be
installed?
• What size unit should be installed?
• What is the payback period?
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 34
Agenda
21 February 2017 Slide 35
Energy Management Solutions
DC Traction Network Modelling
- Position on the network.
- Vehicle characteristics and driving patterns.
- Timetabling and headways.
21 February 2017 Slide 36
Energy Management Solutions
DC Traction Network Modelling
- Position on the network.
- Vehicle characteristics and driving patterns.
- Timetabling and headways.
21 February 2017 Slide 37
Energy Management Solutions
DC Traction Network Modelling
- Position on the network.
- Vehicle characteristics and driving patterns.
- Timetabling and headways.
21 February 2017 Slide 38
Energy Management Solutions
DC Traction Network Modelling
- Position on the network.
- Vehicle characteristics and driving patterns.
- Timetabling and headways.
P. W. Zhongbei Tian, "Energy evaluation of the power network of a DC railway system with regenerating trains," Research Gate, Birmingham, 2015.
Timetable Optimisation ≈ Δ 25% network energy savings
1. Introduction
2. Integrated Transformer Rectifier
3. Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
21 February 2017 Slide 39
Agenda
21 February 2017 Slide 40
Energy Management Solutions
Case Studies
Global ERS 750 Installations – 6 units globally.
Global ESS 750 Installations – 11 units globally.
21 February 2017 Slide 41
Energy Management Solutions
Case Study – SEPTA Project
Energy Savings:
• 2MWh reduction per day.
• 70kW demand reduction.
• $80 kUSD/year.
Energy Market Revenues:
• $200 kUSD/year.
Environmental Benefits
• 1000 tonnes/year CO2.
• 5 tonnes/year SO2
21 February 2017 Slide 42
Innovations in Light Rail DC Traction Networks
Summary
Integrated Transformer Rectifier
Energy Management Solutions
Energy Recuperation System
Energy Storage System
DC Traction Network Modelling
Case Studies
