You are correct, but the problem is tuning the production from wind farms to match demand exactly, in real time, which is what is required to operate the grid. When it comes to renewable energy wind is the hardest in this regard, because production can fluctuate rapidly in very short time scales, especially when there's gusting.
all modern wind turbines have variable incidence blades meaning power regulation can happen on a second timescale.
I'm not exactly sure about the electrical machinery, but if that is sophisticated enough, it can be used in high accuracy fashion to control the generation so that the electeicity is produced in high quality.
You can think of the wind plant working as a giant flywheel. If there is a sudden gust, the spin speed increases and the extra speed is gradually harvested as energy. No sudden spikes. In theory the plants could be used to improve the frequency quality even more by also acting as motors.
If there is a real wind powef power electrical engineer around, feel free to chime in.
i'm sure you're correct. i actually don't know the nitty-gritty technical details. i only know wind from a policy perspective. any power source imposes costs on the grid (transmission congestion, ramp rates, supply/demand mismatches, active/reactive power, etc.) and wind is considered almost pathological in every dimension - but i'm sure it's all solvable.
