50% of turbines erected at Loeriesfontein, South Africa

Loeriesfontein Wind Farm has announced that it has completed the lifting of the first 30 of its 61 wind turbine generators (WTG). The wind farm is achieving an average of 2.5 WTG liftings per week, often with two simultaneous liftings underway.

The wind turbines, which are 100m tall, take a couple of days to erect, assuming the weather is favourable and the first two sections of towers have been erected. The three 53m blades, made from fibreglass reinforced epoxy, are connected to the rotor at ground level before being lifted to the top of the turbine tower. This is a complex lifting exercise, in which one crane raises the assembled rotor whilst another smaller crane and taglines guide the rotor into the correct position. The heaviest component is the nacelle, which contains the generator and gearbox and weighs 82.5 tonnes. “The process of constructing the turbines requires two cranes to work simultaneously; the lifting of the massive 108 meter diameter rotor requires great skill and is a really impressive manoeuvre to watch,” said Leo Quinn, Project Manager of Loeriesfontein Wind Farm.

Siemens Wind Power, along with their sub-contractors, Fairwind and BMS, are responsible for the installation of the wind turbine generators. The same teams will move onto the turbine lifting for the adjacent, Khobab Wind Farm, next year. “We are pleased to be working with an experienced crew, who fairly recently managed the lifting for Noupoort Wind Farm and will later move onto our sister wind farm,” added Quinn.

The next major construction milestone will be the arrival of the main transformer and the energisation of the substation.
When operating at full capacity, the Loeriesfontein Wind Farm will generate approximately 563,500 MWh of clean renewable energy per year; this is expected to supply electricity to power up to 120 000 South African homes.

South Africa, wind farm

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