225kW Wind Turbine

Wind TurbinePrior to the development of the HMGS a comprehensive wind study was conducted to assess the suitability of the site for a large scale wind turbine. Based on the wind data collected over a period of one year and the limitations of the planning consent two suitable wind turbines were identified:

  • Vestas V27/29
  • Micon M530

A further investigation into the availability of these turbines identified the Vestas V29 turbine as being the most suitable wind turbine for this site. The Vestas V29 generates electricity with a terminal voltage of 690V which must then be reduced, using a transformer, to 415V, the preferred voltage for the EETC site. The Vestas V29 turbine has the following specification:

  • 3 blades constructed from fibreglass reinforced polyester
  • Tower constructed from steel plate, corrosion protected and painted white
  • Rated Power Output between 200 - 250kW
  • Rated for operation in wind speeds of up to 25m/s
  • Rated for survival in wind speeds of up to 55m/s
  • Suitable for operation in average wind speed of 4m/s (IEC class III/IV)
  • Rated for operation in turbulence of 36.4% (higher than IEC class 'A')
  • Anemometer mounted on nacelle

The following safety systems are also included:

  • Centrifugally activated blade-tip brakes
  • Hydro spring 'fail safe' disc brake
  • Over-speed control on rotor that activates disc brake
  • Thermo detector in generator and yaw gear motor
  • Vibration control switch
  • 90° yaw off the wind
  • Automatic stop for worn brake pads

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