Offshore Wind Farm Projects Ian Mould Business Development Manager - Renewables 4 th December 2012
Agenda Alstom and Alstom Grid in the UK Projects delivered to date - Barrow, Robin Rigg, Ormonde, Sheringham Shoal, German projects, lessons learnt so far Why we need to go for HVDC in Round 3 and the technical challenges that creates HVDC demonstrator and new HVDC factory at Stafford Conclusions Any Questions 2
Alstom Group : Four main activities Rail transport infrastructure - Alstom makes 1 metro in 4 and 1 tram in 4 Power generation infrastructure - Alstom supplies major equipment in 25% of the worldwide installed power generation capacity Renewable power technologies Hydro, biomass, wind, geothermal, tidal, solar, wave Power transmission infrastructure Strong positions in key markets and technologies (Network Management, GIS, HVDC, Disconnectors, Instrument Transformers ) 3
Global industrial footprint to enable global competitiveness Over 90 manufacturing and engineering sites worldwide Charleroi, Canada, New Disconnectors factory Gebze, Turkey New service facility Moscow, Russia Agreement for cooperation in R&D Canoas, Brazil, extension of the power transformer factory Shanghai, China China R&D Technology Center Main Manufacturing Sites Main Engineering Sites R&D Competence Centres Technology Centres Stafford, UK New service and Technical Institute facility 4 Chennai, Noida, India Technical Institute
UK Sites & Employees Corporate Transport Grid Power Project sites Preston Manchester Warrington Knutsford Liverpool Chester Crewe Dublin Stafford Wolverhampton Birmingham Pembroke Cwmbran Maesgwyn Langage 5 Whitelee Glasgow Carlisle Newcastle York Derby Staythorpe Ashby-de-la-Zouch Rugby CHQ Borehamwood London Grain Hoo
Alstom Grid: The United Kingdom A leader in electrical transmission with a ~25% UK market share Over 370M in Sales 2010/11 ~1300 UK based employees Complete UK coverage 6
Why do we need substations at all? Power transformers Compensation systems Switchgear Protection and control 7
Offshore Windfarm connected with HV AC 132kV 33kV 132kV 11kV 11kV 400V 400V 8
Projects Delivered to Date UK and Germany Barrow 90MW 2006 Robin Rigg 2 x 90MW 2009 Ormonde 150MW 2011 Sheringham Shoal 2 x 150MW 2011 Total = 780 MW Alpha Ventus 60MW 2008 9
Projects under construction Germany Borkum West II 400MW Veje Mate 400MW Gode Wind II 252MW Global Tech 1 400MW MEG I 400MW Baltic II 288MW Meerwind 288MW Total = 2.4 GW 10
Sheringham Shoal Offshore substations ready for load out March 2011 11
Sheringham Shoal Offshore substations load out March 2011 12
Sheringham Shoal Offshore substations installation May 2011 13
Sheringham Shoal - View from a PTV, summer 2012 14
Connection point for Sheringham Shoal Salle 132kV Substation 15
Lessons learnt Design co-ordination with topside designer multilevel structures Access Tides Weather windows Vessels Helicopters 16
Why do we need expensive HVDC systems? - subsea cable Fibre optic comms Copper conductor Insulation Protective steel armour 17
Why do we need expensive HVDC systems? - AC Cable Insulator XLPE (plastic) Copper Conductor Offshore Generation Onshore Demand 18
Why do we need expensive HVDC systems? - DC Cable Offshore Converter Station Onshore Converter Station 19
HVDC Systems Comparative HVDC & AC Transmission Costs Cost Lines & Stations DC Converter Stations DC AC Break Even Distance AC Stations 800km Overhead Line 100km? Submarine Cable Transmission Distance 20
Offshore Windfarm connected with HV DC < 100km 300kV DC 33kV 132kV 11kV 11kV 400V 400V 21
Voltage Source Converters (VSC) Voltage Source Converters: Smaller footprint than older LCC technology making offshore applications more practical (although still large installations) Uses industry standard transistors (as used in railway locomotives etc) Medium current achievable (limited by transistor technology) High voltage achievable (voltage limited by available cable technology) DC Grids more easily achieved, although switching is still a challenge Conversion losses ~1.0% (total per station) Q 1 P Q 2 I C1 Network 1 VSC U C1 U C2 VSC Network 2 Station 1 DC transmission Station 2 line 22
Stafford - VSC Demonstrator 23
Stafford - New Facilities for VSC Projects Commencement of Works October 3rd 2011 VSC Manufacturing Facilities Complete March 2012 24 0ffice Relocation Complete 19th April 2012
Conclusions and Questions Conclusions AC solutions now established Still leaning in the offshore environment corrosion, access, logistics etc DC can be done but true costs not known new technology in a hostile and inaccessible environment More projects need to be released from planning stage to allow the industry to develop Any Questions? 25
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