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© ABB Group September 13, 2013 | Slide 1
New Solutions for Transmission SystemsHVDC Light (轻型直流)
Peter Lundberg, Product Manager HVDC Light , Guangzhou, Sept 3 2013
© ABB Group September 13, 2013 | Slide 2
Content
Introduction HVDC Light – features and capabilities
Applications
Examples – transmission solutions - projects
Future transmission solutions
Summary
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HVDC is a fast growing technology with several applications
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And more applications to grow
AC/DC conversion
Remote sun power
Mega-city in-feed
Power from shore
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VSC technology break through
More than one qualified supplier
Losses in the level of classic
Only solution for offshore
Asymmetric solution opens up for >500 kV solutions and >2,000 MW for bipoles
VSC properties valued
Net stability
Black-start capability
Compactness
DC grid enabled
Gen. 1
Gen. 2
Gen. 3
Gen. 4
HVDC Classic
HVDC Light
0,0%
0,5%
1,0%
1,5%
2,0%
2,5%
3,0%
3,5%
1995 2000 2005 2010 20150
200
400
600
800
1000
1200
1400
MW
Gen. 1
Gen. 2
Gen. 3
Gen. 4
Losses Capacity
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ABB, HVDC LightExperience
17 HVDC Light projects in total, since 1999
We have delivered more than 2.400 km HVDC Light Cables
Whereof 10 are in full operation, with more than 63 years of operation
All HVDC Light projects delivered on time, according to contract
10 of the projects are full Turn Key HVDC Light Systems, including all cables
Three of the projects are 100% land cable projects
Advanced applications; gas platforms, wind park platforms and VSC OH-line
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HVDC LightTechnical development
Hällsjön3 MW
± 10 kV
Cross Sound330 MW± 150 kVGotland
50 MW ± 80 kV
East-WestInterconnector
500 MW± 200 kV
BorWin1400 MW± 150 kV
Dolwin 1800 MW± 320 kV
Skagerrak 4700 MW500 kV
Estlink350 MW± 150 kV
Caprivi300 MW+ 350 kV
1997 1999 2001 2003 2005 2007 2009
500
1000
2000
1500
2500
200
100
400
300
500
600MW kV
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HVDC Light applicationsMarket and technology trends - renewables
Europe needs a new transmission network due to: Landing-point for offshore wind and solar power
will be at the “out-skirts” of the Grid
Close down of the German nuclear power
Increased energy trading
The transmission grid must be re-designed to meet the new needs: Long distance bulk power
Low losses
Minimum environmental impact
Offshore wind
Solar
Hydro
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HVDC Light applicationsMarket and technology trends - European HVDC Grid
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What is a HVDC grid?
A HVDC grid that can operate:
• Independent of one or several disturbances (isolate a failure)
• In different operation modes in the connected AC- & DC-systems
Technology gaps for the full realization includes:
• DC breaker
• Power flow control
• Automatic network restoration
• High voltage DC/DC converters
Global rules/regulations for operation required for market acceptance
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HVDC Grids – Why?Regional to continental HVDC Grids
Offshorewind
Solar
Hydro
Why HVDC Grids vs HVDC single links or AC• Only relevant offshore solution • Loss reduction• Increased power capacity vs. AC • Less visual impact
Why now:• Offshore wind, remote solar, grid
constraints• HVDC Light systems and components
mature
Challenges:• HVDC Breakers & DC/DC Converters• Regulatory framework
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HVDC Light applicationsMarket and technology trends - interconnection / offshore setup
VSC 700 MWHVDC Submarine Cable
AC S/S
350 MW
AC S/S
350 MW
VSC 700 MW
VSC 700 MW
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Project example NordBalt, Lithuania/Sweden
Customer’s need Strengthen security of supply in Baltic region
and southern Sweden Integrate electricity markets of the Baltic and
Nordic countries
ABB’s response Turnkey 700 MW HVDC Light system
Designed for integration into a future pan-European DC grid
Customer’s benefits Low losses and high reliability
Network stability through active AC voltage support
Quick grid restoration with black-start capability
Customers: Svenska Kraftnät and LITGRID turtas
Year of commissioning: 2015
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HVDC Light applications Market and technology trends - hybrids
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Project example Skagerrak 4, Norway - Denmark
Customer’s need Boost transmission capacity with 700 MW Use electricity more efficiently Enable networks to add more renewable
energy
ABB’s response Two 700 MW HVDC Light converter stations
500 kV – new voltage record for the HVDC Light technology
Customer’s benefits Network stability
Low losses and high reliability
Quick grid restoration with black-start capability
Customer:Energinet.dk & Statnett
Year of commissioning: 2014
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HVDC Light applications Market and technology trends - system expansion
ACAC
Converter station
HVDC TransmissionConverter station
- DC
+ DCAC Filter2*22 Mvar
AC Filter2*22 Mvar
AC Filter2*22 Mvar
AC Filter2*22 Mvar
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Project exampleCaprivi Link, Namibia
Customer’s need Connect the Zambian and Namibian gridABB’s response Turnkey +350 kV, 300 MW HVDC Light
transmission system Option for another 300 MW First HVDC Light with overhead lines
(except Hällsjön)Customer’s benefits Stability in two very weak a.c. networks Enables future power trading in the
expansive region of southern Africa Black start of isolated grids
Customer: NamPower
Commissioning: 2009
OHL clearance in commissioned VSC-link
The Caprivi link, Namibia: First commercial application of VSC with overhead lines:
In case of a DC line earth fault
Opening of AC breakers (x)
Fault arc de-ionization
Closing of AC breaker and sequencial fast re-start
In SVC - mode
500 ms after the fault detection
Back to pre-fault power transmission
additional 1500 – 2000 ms
=~
=~
x
x
Single pole diagram:
OHL
Sou
rce:
SM
HI.s
e
Two level converter - Asymmetric monopole (Bipole) - Power diodes© ABB Group September 13, 2013 | Slide 18
Project referencesHVDC Light technology
Murraylink 2002, 220 MW
Directlink 2000, 3X60 MW
Tjäreborg 2000, 7 MW
Estlink, 2006350 MW
Troll, 20042X40 MW
Eagle Pass 2000, 36 MW
Valhall, 200975 MW
Caprivi Link2009, 300 MW
Hellsjön1997, 3 MW
East WestInterconnector,2012, 500 MW
BorWin12009, 400 MW
NordBalt2015, 700 MW
Gotland1999, 50 MW
DolWin22015, 900 MW
DolWin12013, 800 MW
Troll, 20152X50 MW
Cross Sound 2002, 330 MW
Mackinac 2014, 200 MW
Åland, 2015100 MW
Skagerrak 4 2014, 700 MW
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Summary
VSC HVDC Technologies
Light (VSC) – since 1999 – longest experience
Technology portfolio supporting major applications
Applications to support future transmission needs
Turn-key solutions for optimal project solutions
Key features for HVDC Light Higher ratings Lower losses More compact, particularly offshore Multi terminal Control features
ABB has the longest experience in developing HVDC Light
ABB is by far the most experienced in delivering reliable HVDC Light systems
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