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Battery storage system for offshore windfarm

Battery storage system for offshore windfarm. S ae thor Asgeirsson Mateusz Kluska Jure Vetrsek. Akureyri , 1 9 .6.2009. Table of content. Site with description Wind resources and utilization Load modelling Intermittency issues Battery design Conclusions.

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Battery storage system for offshore windfarm

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  1. Battery storage system for offshore windfarm SaethorAsgeirsson Mateusz Kluska Jure Vetrsek Akureyri, 19.6.2009

  2. Table of content • Site with description • Wind resources and utilization • Load modelling • Intermittency issues • Battery design • Conclusions

  3. Wind resources and utilization • System location: Cleveland • 5 wind turbines (each 2MW) connected to grid and battery bank • Average wind velocity 8,08 m/s Power curve

  4. Households hourly load modelling • Small community with 1000 households • Average hourly load per household 2,88 kW Average hourly electricity load for a day in most critical month

  5. Problem • How to meet energy needs, when there is not enought energy from wind turbines?

  6. Problem

  7. Battery bank properties Battery stack performance

  8. Battery design • Nominal capacity23,993kWh. • Autonomy5.03hr. • 9 % capacity shortage.

  9. Battery

  10. Hourly battery state of charge

  11. Battery storage advantages • Grid parallel configuration • High system efficiency • Low maintenance • Low noise • Zero emission • Long lifetime <4500 cycles

  12. Conclusions • We were not modelling costs. • We designed our batteries to cover basic load during summer time - low production from wind turbines. • Peak power was provided by the grid. • Excess power was sold to the grid. • In general, if connection to the grid is available, one does not use batteries.

  13. References • Battery energy storage technology for power systems—An overview, K.C. Divya, Jacob Østergaard, Electric Power Systems Research 79 (2009) 511–520 • Water Quality Modeling: Decision Support Techniques for Lakes and Reservoirs, Volume IV Brian Henderson-Sellers, Richard H. French, Steve C. McCutcheon Edition: illustrated Page 37 • http://navigator.awstruewind.com/ • http://www.smallwindenergy.ca/en/Overview/CaseStudies/OffGrid.html • http://www.enernoc.com/enerblog/big-batteries/ • http://en.wikipedia.org/wiki/Sodium-sulfur_battery • http://www.wirefreedirect.com/battery_sizing.asp • http://navigator.awstruewind.com/ • Cleveland Wind Project http://blog.cleveland.com/business/2008/09/first_studies_encouraging_on_l.html • HOMER – The Micropower Optimization Model Software by NREL

  14. Questions?

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