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Battery storage system for small community

Battery storage system for small community. Seathor & Mateusz&Jure. Akureyri , 18.6.2009. Table of content. Site with description Wind resources and utilization Load modelling Intermittency issues Battery design Conclusions . Wind resources and utilization.

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Battery storage system for small community

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  1. Battery storage system for smallcommunity Seathor & Mateusz&Jure Akureyri, 18.6.2009

  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 ch 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 most critical month

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

  6. Problem Production kWh/yr % Wind turbines 59,509,440 98 Grid purchases 1,193,459 2

  7. Battery stack properties Strings in parallel 3,157 Battery stack performance

  8. Battery design • Nominal capacity 23,993 kWh • Usable nominal capacity 14,396 kWh • Autonomy 5.03 hr

  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 • In general, if connection to the grid is available, one does not use batteries. • We designed our batteries to cower basic load during summer time low production from wind turbines • Peak power was provided by the grid. • Excess power was sold to the grid as well

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