China installs world’s 1st 18 MW wind turbine, to power 36,000 homes/yr
China installs world’s 1st 18 MW wind turbine, to power 36,000 homes/yr
Equipment manufacturers in China are keen on building bigger wind turbines even as those in the West aren't looking beyond 16 MW.
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Are there particular pros and cons to the scale of each individual turbine? I think this is the first time I've seen that figure reported as opposed to the capacity of the wind farm as a whole
With larger turbines you need fewer for the same capacity. This means less manufacturing, easier maintenance, they are taller, which means more stable and stronger wind, and a lower price of construction. However larger turbines also lead to greater stresses on the system, so that can again increase maintenance and large blades are hard to transport on land.
So it is a compromise. Up to now offshore wind turbine manufacturers always built bigger turbines with newer generations. However the engineering challenges increases, so many have stopped going for bigger then 14-16MW and instead go for increased numbers of turbines with higher reliability.
I can picture the equipment procurement meeting perfectly based on this description, good analysis
Last issue. The forces on the tips of the wind turbines are insane.
Over a large range of sizes for many physical reasons larger turbines can be more efficient per space and per cost. For example there is less ground effects for larger turbines and the rotor area scales quadratically with hub height.