ABB, November 2012 The high voltage DC breaker The power grid revolution. ABB 07 November 2012 Slide 1

Transcription

1 ABB, November 2012 The high voltage DC The power grid revolution 07 November 2012 Slide 1

2 Solving a hundred year old technology puzzle The war of currents DC was the missing link J. P. Morgan N. Tesla Power lines in New York City, 1888 T. Edison G. Westinghouse Slide 2

3 The DC grid Why DC power? Slide 3

4 The transmission grid becomes increasingly important Continued development of AC and DC technologies Different technologies :Same power transmitted Traditional overhead line with AC Overhead AC line with FACTS* Transmission capacity (MW) 6,000 4,000 2,000 HVDC Classic Voltage kv 200 Capacity up 6x since 2000; Voltage up from +/- 100kV to +/- 800kV since HVDC Light Capacity up 10x ; losses down from 3% to 1% per converter station since Losses % 3 1 Longer transmission distances HVDC (high voltage direct current) Classic overhead line Underground line with HVDC Light or AC cable More power - lower losses - reduced cost per megawatt (MW) Development of power electronics, cable and semiconductor technology Slide 4

5 DC as disruptive technology Slide 5

6 The DC grid Why now? Slide 6

7 Enabling the next generation grid The DC hybrid enables the next generation of the grid, coping with new challenges like large scale renewable power transmission DC grids can provide power transmission in a highly efficient and stable way, DC transmission can be up to 50% more efficient than AC transmission Large scale integration and transmission of renewable power in Germany and the UK. US Potentially for countries that tap hydropower over long distances (China, India, Brazil) Critical technology for European grid and Desertec grid visions Interesting business opportunity for ABB in mid- to long term Slide 7

8 HVDC limitation today - point to point power highways No entry or exit points - a major hurdle Europe China Desertec From joining the dots to connecting the lines Slide 8

9 The next step - DC Grids It's time to connect Slide 9

10 The high voltage DC hybrid The challenges Slide 10

11 Breaking safely DC power - equivalent to the output of a large power station 30 times faster than a blink of the human eye 07 November 2012 Slide 11

12 The high voltage DC hybrid How does it work? Slide 12

13 Normal operation. Power flow in the path with less resistance (=lower losses) Mechanical Power electronic Low loss path Main power electronic Slide 13

14 Breaker started by power electronic closing pushing the current flow into the lower path Mechanical Power electronic Main power electronic Slide 14

15 Mechanical opens to block the upper path Mechanical Power electronic Main power electronic Slide 15

16 Main electronic block in the lower path Mechanical Power electronic Main power electronic Slide 16

17 High Voltage DC ABB as technology pioneer since 1956 Slide 17

18 More then 50 years ago ABB broke the AC/DC barrier Gotland, Sweden, 1954, first commercial HVDC link in the world, pioneered by ABB Slide 18

19 ABB has more than half of the145 HVDC projects The track record of a global leader Nelson River 2 CU-project Vancouver Island Pole 1 Rapid City Square Butte Pacific Intertie Pacific Intertie Upgrading Pacific Intertie Expansion Intermountain IPP Upgrade Blackwater Highgate 58 HVDC Classic Projects since HVDC upgrades since HVDC Light Projects since 1997 Châteauguay Outaouais Quebec- New England EWIC English Channel Dürnrohr Sardinia-Italy Sapei Cross Sound Mackinac Eagle Pass Sharyland Rio Madeira Itaipu Inga-Shaba Caprivi Link Hällsjön Troll 1&2 Troll 3&4 Skagerrak 1-3 Skagerrak 4 Valhall NorNed Konti-Skan Tjæreborg BorWin1 DolWin1 Dolwin 2 Apollo Upgrade Cahora Bassa Brazil-Argentina Interconnection I&II Italy-Greece Chandrapur Phadge Vizag II Rihand-Dadri Vindhyachal North East Agra FennoSkan 1&2 Estlink Gotland 1-3 Gotland Light NordBalt SwePol Baltic Cable Kontek Hülünbeir- Liaoning Lingbao II Extension Three Gorges-Changzhou Three Gorges-Shanghai Sakuma Gezhouba-Shanghai Xiangjiaba-Shanghai Jinping - Sunan Three Gorges-Guandong Leyte-Luzon Broken Hill New Zealand 1&2 Directlink Murraylink Slide 19

20 ABB s track record of HVDC innovation Many firsts some examples China Germany Norway- Netherlands World s longest / highest power capacity - first 800 kv commercial link - Norway Integrating the world s most remote offshore wind farm Australia World s longest underwater power link Namibia World s first offshore platform connected to shore power World s longest underground cable link World s first HVDC Light on an overhead line Slide 20

21 ABB s unique position in HVDC In-house converters, semiconductors, cables Key components for HVDC transmission systems Converters High power semiconductors HV Cables Conversion of AC to DC and vice versa Silicon based devices for power switching Transmit large amounts of power- u/ground & subsea Slide 21

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