Showing the World: ICOE 2014 s Iconic Steps Forward

Transcription

1 Showing the World: ICOE 2014 s Iconic Steps Forward

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4 Turbine design Community Structural Modelling Flow Measurement Hydrodynamic Model Bathymetry

5 Design Load Estimation for Tidal Turbines from a Multi-Year Measurement Time Series Brian Polagye Northwest National Marine Renewable Energy Center Department of Mechanical Engineering University of Washington Numerical Modelling Critical Learning before Getting Wet November 6, 2014

6 Motivation Low Factors of Safety Design Philosophy Pendulum First-generation structural problems High Factors of Safety Reliable, but Uneconomic Designs

7 Contribution to Design Loads Load ~ ~ 2 U Turbulence 32% Aharmonic Currents 14% Harmonic Currents 51% Storm Surge 3%

8 How about a Shorter Measurement? Single Realization Ensemble for Duration

9 PELAMIS QUICK RELEASE AND CONNECTION SYSTEM: ENABLING A COST EFFECTIVE OFF-SITE MAINTENANCE STRATEGY.

10 DRIVERS

11 CHALLENGE Reduce the amount of time required for onsite operations. Increase the envelope of conditions in which operations can safely be carried out.

12 RESULTS & BENEFITS Marine Operations - Achievements Recovery >2.5m Hs Over 700,000 man-hours on P2 programme Installation >2m with Hs no lost time incident. Installation <60 mins Recovery <12 mins

13 Cost Effective Installation of Commercial Ocean Energy Projects Adam Holland Marine Renewables Manager Damian Callan Technical Manager Commercial in Confidence

14 System Benefits Commercially Viable Uses Proven Technologies Small Diameter Drilling Low Environmental Impact Universal to Most Wave and Tidal Energy Generators Anchors Tested Insitu / Reduced Fatigue Serviceable & Easily Decommissioned Commercial in Confidence

15 System Cost Benefits Deployment spread dayrates are extremely favourable Vs. Day rate Est k Day rate Est k Drill support from small OSV (current market day rate: 15-18k). Lowest material cost of any foundation type. Working windows are greater than any other installation technique. Greater economy of scale when compared to gravity or monopile. Commercial in Confidence

16 Phase 1 Phase 2 Phase 3 Commercial in Confidence

17 The WCWI: Forecasting Waves on the BC Coast Motivation & Objectives Model Setup Applications and Opportunities The WCWI is a comprehensive waveto-wire modelling study that includes: Wave resource assessment, WEC modelling and grid integration. Wave Forecasting: Motivation: Proactive management of non-dispatchable wave generated electricity. Requires modelling of both the resource and technology. Limits to publicly available wave forecast data. Objective: Detailed spectral wave data close to shore. Clayton Hiles Clayton@cascadiacoast.com

18 Forecasting Waves on the BC Coast Motivation & Objectives Model Setup Applications and Opportunities SWAN wave modelling software Unstructured grid: 60k nodes, 92k elements. Bathymetry: CHS, NOAA, GEBCO Wave BCs: directional spectra from OSU NEP WW3 model Wind BCs: COAMPS NEP. Calibration: Hind-cast modelling - Quantifying the Wave Energy Resource and Farm Siting Opportunities for Western Canada. Forecast performance (H m0 ): R=~0.9, B<0.2 Clayton Hiles Clayton@cascadiacoast.com

19 Forecasting Waves on the BC Coast Motivation & Objectives Model Setup Applications and Opportunities Enable forecasting of WEC power output. Present applications: Study how forecasted WEC power might integrated with the grid through existing infrastructure. Identify regions where investment in additional infrastructure would enable further WEC development. Future opportunities: Enable proactive management of generation and transmission capacity. Firming of WEC power. Clayton Hiles

20 DeltaStream Key Features: - 12m Rotor with Fixed Pitch Blades - 400kW Generator - Hydraulic Yaw System - Gravity Foundation Spanning 16m - Weighs 200t

21 Thrust Control - Unique Rotor design and control strategy - Rotor allowed to overspeed in above rated conditions - Traditional pitch or stall methods unnecessary - Reduces weight requirements for gravity based foundation

22 Predictive Control Controller Turbine Identifies Mitigates Approaching Sudden, Impact Load Rotor Turbulence Speeds up is Characterised in Preparation and for Turbulence Turbulence Tracked

23 Centre d Ingénierie Hydraulique Tidal stream demonstration project at Paimpol- Bréhat (France) EDF Hydro Engineering Centre ICOE2014 Halifax, NS Canada (Nov 2014)

24 EDF & Marine energy La Rance ( ): first tidal plant in the world 240MW 500GWh/year 50 years of operation R&D program since 2003 to estimate the potential of tidal stream energy. Development of softwares Participation to numerous R&D projects 2008: Decision to launch a tidal stream demonstration project to investigate the following aspects: Public acceptance, permitting, environmental impact, Technical maturity, energy production, Costs. => When can we expect commercial tidal stream projects in our portofolio? => Within which economical framework (Feed-In Tarif)? 40 M are invested to get answers, based on real experience. 7 M coming from EU, national and regional grants.

25 Paimpol-Bréhat demonstration project An «industrial» architecture Fully submerged

26 Where we are: Administrative procedures ( ) Successfull OpenHydro 16m turbine prototype testing on site ( ; ) 16km export cable manufacture, installation and stabilization ( ) Onshore + Offshore substations ( ) Subsea connection system design

27 Next phase and first lessons learnt: Installation of two OpenHydro PS2 turbines Grid connection: Fall 2015 Turbines are 1/4 of an industrial project Substation Subsea cables Connection system Marine operations Safety Costs Weather and «tidal» downtime OPEX

28 Marine Renewables Commercialisation Fund (MRCF): Array Technology Innovation Programme Scottish Government Funded Programme (Managed by the Carbon Trust) Designed to provide a step change cost reduction for first marine energy arrays. Budget ~ 3m (Total inc. leverage ~ 5.5m) Timeframe: January March 2016 Added value: 55 public knowledge sharing requirements 28

29 Innovation Projects CableFish Survey Tool Marine Energy Turbulence in Measurement Marine Platform Environments 29

30 Innovation Projects Anchor Bag & Nylon Moorings Rock Drill Foundation 30

31 Showing the World: ICOE 2014 s Iconic Steps Forward Richard Karsten, Acadia University Brian Polagye, Northwest National Marine Renewable Energy Center/Department of Mechanical Engineering, University of Washington Andrew Scott, Pelamis Adam Holland & Damian Callan, McLaughlin & Harvey Clayton Hiles, Cascadia Coast Research Ltd. Magnus Harrold, Tidal Energy Ltd. Nicolas Gerrard, EDF Richard Parkinson, Mojo Maritime Angus Vantoch Wood, The Carbon Trust