WT-4. Cost of Energy (COE) analysis for ocean and river TT

Minimize COE of 1 MW TT (rated speed - 11 rpm, torque - 868 kNm, overspeed - 1.2) by choosing optimal (for lowest COE) drive train.

Given:

  • Grid on-shore voltage – 6 kV
  • Cables – from shore
  • Some TT in the park are 1 km away from shore, some – 3 km

Cost of other parts of the system.

Try FC and trafo in the nacelle.

Compare ocean TT and river turbine, the latter always having 100% load.

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