asian energy highway enabling the next generation grid
TRANSCRIPT
© ABB
Asian Energy HighwayEnabling the next generation grid
Liu Qianjin, Chief Technology Officer, ABB China Limited, Dec 18, 2013
© ABB
About myself
PhD & MSc at Tsinghua University (1996-2002)
20Mvar StatCom Development
R&D with ABB since 2003
High Voltage DC Transmission
Grid Economical Simulation
Renewable integration
Chief Technology Officer since 2010
© ABBDecember 16, 2013 | Slide 3
High Voltage DC Transmission (HVDC) Motivations and Benefits of HVDC
• Higher Transmission Capacity
• Lower losses than AC on Long Distances
• Possibility to use Cables (Land or Sea)
HVDC Light:1 x ±400 kV1200 A1620 mm2
conductors
HVAC:2 x 400 kV2 x 1200 mm2
conductors
En
erg
y L
oss
es
Transmission Line [km]500 1000
5%
10%HVAC: 2 x 400 kV
HVDC: 1 x ±400 kV
AC/DC conversion losses
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HVDC limitation today - point to point power highwaysMore power and lower losses
December 16, 2013
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HVDC Grids – Why?Regional to continental HVDC Grids
Why DC Grids vs point to point DC links or AC?
Only relevant offshore solution
More efficient on long distances
Fewer converters – lower cost
Redundancy
Why now:
Offshore wind, remote solar, grid constraints
HVDC Light systems and components mature
Right of Way
Challenges:
DC Breakers & DC/DC Converters
Regulatory framework
December 16, 2013 | Slide 5
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Asian Energy HighwayGMR & Southest Asia DC grid
December 16, 2013 | Slide 6
GMR & Southeast Asia DC grid by ABB
Greater Mekong Region (GMR)&
Southeast Asia DC grid – VSC based
• The less exchanged power;
• The weaker receiving ac network;
• The flexible power trade;
Power demand and supply of the region in 2025
Source: Electricity Generating Authority of Thailand (EGAT)
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Asian Energy HighwayMongolia-East Asia DC grid
December 16, 2013 | Slide 7
Mongolia-East Asia DC grid by ABBMongolia-East Asia DC grid –
LCC based
• The more exchanged power;
• The strong receiving ac
network;
• The flexible power trade;
Potential interconnection in Mongolia-East Asia DC grid
Source: Asian Development Bank(ADB)
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Asian Energy HighwayPan-Asia DC grid
December 16, 2013 | Slide 8
Pan- Asia DC power grid by ABB
DC grid for the solution:
• DC grid is the best solution for the
vision
• Different requirement should have
different technologies:
• Latest technology (VSC) connects the
weak AC network and light load area.
• Classic technology (LCC) connects the
high power requirement and heavy load
area.
• So called DC grid.
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Enabling the next generation grid
Latest DC technology enables the next generation of power grid, coping with new challenges like large scale renewable integration, bilateral power market transaction
DC grids can provide power transmission with 50% higher efficiency, less generation reserve and higher availability.
Large scale integration and transmission of renewable power in EU and US. Potentially for countries that tap hydropower over long distances (China, India)
Potential pilot projects in EU, US and CN
Regulatory framework remains an issue
December 16, 2013 | Slide 9
