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A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems

A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems. Lars Nesje Grimsmo NTNU Magnus Korpås NTNU Terje Gjengedal NTNU/Statkraft Steffen Møller-Holst SINTEF Materialteknologi.

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A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems

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  1. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Lars Nesje Grimsmo NTNU Magnus Korpås NTNU Terje Gjengedal NTNU/Statkraft Steffen Møller-Holst SINTEF Materialteknologi

  2. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Plant overview

  3. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Principles of water electrolysis PEM Electrolysis Alkaline Electrolysis e- H2 O2 e- H2O H2O H2 H+ O2 H2 KOH cathode membrane anode cathode: 2H+ + 2e-  H2 andoe: H2O  2H+ + 2e- + ½O2 cathode: 2 H2O + 2e-  H2 + 2OH- anode: 2OH- ½O2 + H2O + 2e- electricity + H2O  H2 + ½O2

  4. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Electrolyser performance

  5. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Benefits of wind-electrolyser systems • Exploitation of wind resources in areas with no electricity infrastructure. • Hydrogen from renewables is an environment-friendly fuel. • Hydrogen could be used both for transportation and for • stationary energy supply. • Oxygen as a by-product could be used in e.g. fish farms.

  6. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Technical challenges • No grid connection. • Dynamic performance of electrolyser. • Start-stop of electrolyser. • Need for short-term energy storage (battery, flywheel…). • Sizing of electrolyser, wind turbine and hydrogen storage. • Design of power converters and control system.

  7. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Wind conditions in Norway

  8. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Weibul distribution for a year

  9. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Normal distribution for a day

  10. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Simulation case study • Input parameters • 500 kW wind turbine • 3 hydrogen buses • Mean wind speed 7 m/s Component data • Sizing results • 80 kW electrolyser • 330 kWh lead-acid battery • 3300 kg hydrogen storage tank

  11. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Sensitivity of wind speed

  12. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Sensitivity of lifetime

  13. A Probabilistic Method for Sizing of Isolated Wind-Electrolyser Systems Conclusions and further work • The method can be used for estimating the required component sizing • for a specific hydrogen demand. • The method shows good results when compared with chronological • simulations. • Further work will focus on improved rules for sizing of short-term storage. • Further development of the model could include a more accurate • representation of electrolyser and power convertes. • The sizing priciples will also be used for isolated systems with stationary • fuel cell.

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