Paimpol-Brehat tidal demonstrator project. Charles Bodel, EDF R&D Bruxelles (June 16th, 2016)

Transcription

1 Paimpol-Brehat tidal demonstrator project Charles Bodel, EDF R&D Bruxelles (June 16th, 2016)

2 Project key objectives Strategy Contribute to the building of a new industrial sector contributing to green energy production Position EDF as project developer, integrator and operator in the tidal stream sector Industrial feasibility Demonstrate the feasibility of a first array based on full scale components and assess the reliability of the components in operation Identify the main risks and opportunities to tend towards a competitive cost in the mid-term Environmental feasibility Assess the potential environmental impacts of the demonstration farm Specify and carry out an adapted monitoring program Administrative and societal feasibility Set up a frame with the French authorities and obtain the required consent Carry out dialogue with all the stakeholders, including local authorities and fishermen

3 Industrial feasibility

4 Onshore Offshore Project architecture 2 x 16m (PS2) Initial architecture

5 Export cable Specific design DC (+/- 5kV) Optical fibres factory built junctions Double armour, free floading, coilable Prototype validation Cable installation (2012) Length :16 km Installation with a barge fitted by a mooring system Cable buried in seabed (jetting) on 5km Surface laid on 11km, additional protection with cast iron pipes Additional stabilization and free-span remediation works (2013) Exposed to large swell Some sections nearly perpendicular to wave and currents. Free span reduction by realignement and groutbags installation.

6 Turbine technology Phase 01 : Prove the technology concept Successful testing of the 16m prototype in real conditions (winter ) Phase 02 : Prepare industrialization Two new PS2 turbines, with improved design Improved reliability Design for industrial manufacture and assembly

7 Offshore and on-shore conversion systems Offshore converter Convert Power (AC => DC) Step up voltage for exporting to shore (10 kv DC) Generate 400Vac to supply auxiliaries Monitor Turbine and SCADA system Onshore substation Convert 10kV DC to 5.5 kv AC A transformer steps up voltage to 20kV AC Standard equipments for grid connection

8 Connection system and architecture Connection system supplied by Selected solution: Wet-mate connectors (existing products with good track record) Oil-filled individual jumpers Articulated arms Connection by divers export cable Installation of the junction with the export cable (20-23 rd of July 2015) by

9 Interface tests Objectives To check the electrical interfaces between the converter and the Turbine Control Center, including communication, auxiliary and power. Several test stages In the factory, at quayside and sea-trials in the Rade de Brest prior to deployment. Interface tests have proved to be critical to improve the reliability of the system.

10 Deployment and recovery operations Gravity based foundation, Dedicated barge, with upgraded lifting system, Validated Method Statements for deployment and recovery The two turbines and the offshore converter have been successfully deployed at Paimpol-Bréhat site on January 20 th and May 29 th 2016.

11 Environmental feasibility

12 Environmental monitoring Cable (shore section) - Endofauna in muddy sediment : impact assessment. - Experimental tranplantation of sea grass - Monitoring of the natural recolonization of sea grass Turbine : - Noise (drifting hydrophons) - Tidal currents (ADCP) - Fauna : initial state of benthos and marine mammals. Cable (offshore sections) : Monitoring of richess and density of sessile fauna twice a year. Focus on exogen species. Dugornay IFREMER Turbines "OpenHydro" energie.edf.com

13 Administrative and societal feasibility

14 Authorizations and project acceptability Authorizations ( ) Water protection and management Act License for occupation of public maritime domain Building permit Authorization for export cable Grid connection (operating declaration) Project acceptability Early dialogue with all the stakeholders, including local authorities, fishermen, and associations. Adaptation of the design of the plant : turbines deployed in a prohibited fishing area, export cable route adapted. Reduction & compensation measures for social aspects. Regular information through meetings of a project Liaison Group. High level of public acceptance and strong support of local authorities.

15 Conclusions and next steps

16 Conclusions and next steps (1/2) Strategy EDF Paimpol-Bréhat tidal demonstration farm has been developed The gained experience will help in determining EDF strategy in the tidal stream sector Industrial feasibility What has been done Next steps Principle of turbine technology validated in Phase 01 Two turbines and converter deployed and connected Commissioning of the farm currently ongoing Build experience as farm operator: confirm the farm performance (energy yield), and assess the reliability of the components. Budget of the project The total budget of the project had been estimated to 40 M With 6.6 M support from FEDER fund, Région Bretagne and French state agency ADEME

17 Conclusions and next steps (2/2) Normandy Hydro pilot farm 7 x 2MW turbines to be installed in Raz Blanchard Following an call for project organised by the French State Agency ADEME and awarded to EDF and DCNS in 2014 Under the Investissements d avenir (Future Investments) program, with a support in cash and in reimboursable advances (innovative mechanism in progress) With the objective of assessing the LT LCOE of future tidal commercial farms And of setting up the LT strategy of EDF in this industry And after? The first steps of commercial phase should be prepared before 2020 Some on-going projects are today paving the way for it with design tools development (H2020 DT-Ocean project)

18 Thank you for your attention