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Modelling of the Utsira Wind/Hydrogen Demonstration System in Norway

Modelling of the Utsira Wind/Hydrogen Demonstration System in Norway. Arnaud Et é. EWEC 2009 - Marseille. Presentation of SgurrEnergy What is a wind/hydrogen energy system The modelling tool Presentation of the Utsira Project in Norway Results of the simulations Conclusions.

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Modelling of the Utsira Wind/Hydrogen Demonstration System in Norway

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  1. Modelling of the Utsira Wind/Hydrogen Demonstration System in Norway Arnaud Eté EWEC 2009 - Marseille

  2. Presentation of SgurrEnergy What is a wind/hydrogen energy system The modelling tool Presentation of the Utsira Project in Norway Results of the simulations Conclusions Plan for this Presentation

  3. Introducing SgurrEnergy • Leading independent engineering consultancy • International • Based in Glasgow (Head Office), Vancouver, Beijing, Pune (India), Wexford & Paris • Experienced • Over 90 responsive engineers and consultants • Professional • ISO 9001 & 14001 certified • OHSAS 18001 certified • Award Winning SCDI Award for Outstanding Achievement in RE 2008 Glasgow Business Award for International Activity 2007 & Best Business Achievement 2007 at Green Energy Awards

  4. Wind/H2 System: A Balancing Mechanism • Hydrogen is an energy carrier, not an energy source! • An electrolyser, a H2 storage and a fuel cell are used to store the excess electricity generated by wind turbines and produce electricity from hydrogen when needed

  5. Wind/Hydrogen Systems

  6. The hydrogen economy is often proposed as the means to solve both global warming and depletion of fossil fuel resources But technology still immature and performance needs to be improved to compete with conventional systems Computer modelling can help to optimise the system design and improve performance Modelling tool used: TRNSYS/ TRNSED Why We Should Use Modelling

  7. The Utsira Project in Norway

  8. The Utsira Project • Collaboration with the Institute for Energy Technology (IFE) and StatoilHydro in Norway • Utsira is the first large-scale demonstration of a stand-alone renewable energy system where the energy balance is provided by stored hydrogen • In operation since winter 2004/2005 • Significant amount of operational data over the past 3 years

  9. Objectives • Utsira Project: • Demonstrate how wind and hydrogen systems can provide safe and efficient power supply to communities in remote areas • This study: • Use operational data from the Utsira plant to calibrate a set of energy models suitable for simulations in TRNSYS • Evaluate the techno-economic performance of the plant • Identify improved system designs and find an optimal configuration

  10. The Energy System at Utsira

  11. Modelling of the System • Use of one month of operational data (March 07) • Calibration of the system components: • Load profile and wind speed data • Power curve of the wind turbine: Enercon E40 • Hydrogen engine • Electrolyser

  12. Electrolyzer & H2 Engine Modelling

  13. Improvement of the System Design • The existing system cannot guarantee a 100% stand-alone operation for long periods of time

  14. Optimisation of the Utsira System (1/4) • Optimisation based on cost calculations: lower total net present cost for the project

  15. Analysis using one year of operational data (Jan-Dec 05) Optimal system at Utsira : 100 kW electrolyser 50 kW hydrogen engine 11,100 Nm³ of H2 storage (70 m³ at 200b ) For a 100% stand-alone operation, the size of the electrolyser should be doubled and the H2 tank should be almost 5 times bigger! Optimisation of the Utsira System (2/4)

  16. To obtain better performance and reduce the size of the system, the existing H2 engine is replaced by a more efficient fuel cell Optimal system at Utsira : 48 kW electrolyser 50 kW fuel cell 4800 Nm³ of H2 storage (30 m³ at 200b ) The efficiency of the power generating system and the size of the H2 tank should be doubled compared to the existing system Optimisation of the Utsira System (3/4)

  17. Optimisation of the Utsira System (4/4)

  18. Techno-economic model of wind/hydrogen energy system built on the TRNSYS platform and user-friendly interface designed Models applied to the wind/hydrogen demonstration project on the Island of Utsira in Norway This study has shown that the system needs to be modified in order to achieve fully autonomous operation for long periods of time: Increase the size of the hydrogen storage Replace the hydrogen engine by a more efficient fuel cell Conclusions (1)

  19. Further technical improvements and cost reductions are necessary before wind/H2 systems can compete with existing commercial solutions, for example wind/diesel hybrid systems Hybrid system solutions should be based on more than one energy source (e.g. wind, solar, bioenergy) to reduce the need for large and costly energy storage When only based on wind it is particularly important to choose a location with a steady wind resource Conclusions (2)

  20. Thank youarnaud.ete@sgurrenergy.com SgurrEnergy 225 Bath Street G2 4GZ Glasgow, UK Tel: +44 (0)141 227 1700

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