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An evaluation of collection network designs which eliminate the turbine converter

An evaluation of collection network designs which eliminate the turbine converter. Max Parker Olimpo Anaya-Lara. Overview of connection methods. Star. String. Cluster. Example Wind Farm Layout. 1.2km. 1GW transmission platform rating. ±300kV HVDC link.

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An evaluation of collection network designs which eliminate the turbine converter

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  1. An evaluation of collection network designs which eliminate the turbine converter Max Parker Olimpo Anaya-Lara

  2. Overview of connection methods Star String Cluster

  3. Example Wind Farm Layout 1.2km • 1GW transmission platform rating. • ±300kV HVDC link. • Turbines: 10MW, Swept diameter 170m. • Spacing: 7 diameters, 1190m. • 10x10 square. 10.8km 1.2km 10.8km

  4. Cable voltage: 52kV AC 70kV DC 7 turbines per string 14 strings Non-tapered cable rating Windfarm Layout, Radial StringsFor string and cluster networks Turbines Redundancy Links Collection Platform

  5. Windfarm Layout, Star Connection 1 Platform Collection voltage: 11kV AC 15kV DC Loop network voltage: 132kV AC ±100kV DC 2 Platforms 4 Platforms 8 Platforms Platforms Outside Platforms Inside HVDC Link Collection Loop network Collection/Transmission

  6. Evaluation of cable lengths

  7. Evaluation of cable lengthsbreakdown of costs Example: AC, platforms inside farm Loss Cost Calculation Lifetime: 20 years Discount rate: 10% Electricity: £36/MWh ROC: £40/MWh

  8. Site and Turbine Parameters Evaluation of losses • Average wind speed: 9.8m/s • Cut-in wind speed: 3m/s • Cut-out wind speed: 25m/s • Rated wind speed: 12m/s

  9. Breakdown of losses

  10. Only cable, platform and loss costs considered at this stage Breakdown of costs

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