Now that the Woodlawn Wind Farm is operational, electricity production begins at wind speeds above 14 km/h, and maximum or ‘rated’ capacity is achieved at speeds of approximately 36–54 km/h.
The turbine blades rotate at regular revolutions – between 15 and 18 revolutions per minute – and operate at capacity until the wind speed reaches 90 km/h.
The Woodlawn Wind Project contains 23 of the Suzlon S88 turbines, each with an installed capacity of 2.1 MW, pitch-regulated blade operation, a three-stage gearbox and flexible coupling to the asynchronous induction generator.
Each steel tower reaches 80 m in height with an 88 m rotor diameter. The blades, made of fibreglass and epoxy, measure 44 m each.
The turbines connect to the electricity network along a combination of underground and overhead cabling via the Capital Wind Farm substation. New substation equipment installed to allow for Woodlawn included a Toshiba 30/330 kilovolt (kV) transformer, switch room, reactive plant, and protection system.
In addition to a supervisory control and data acquisition system, Woodlawn’s power output and interaction with the National Electricity Market (NEM) is controlled using custom-built software and a communications link to Infigen’s operations control centre in Sydney.