The power quality impact of a 2.5 MW wind park has been measured and analyz
ed. The turbines in the park operate at variable speed at low wind speeds a
nd at fixed speed at higher wind speeds. The harmonic current injection is
low and the calculated flicker contribution is seldom above 0.25, The wind
park also has the potential to maintain the voltage on the supplying grid b
elow a certain limit, in this case 11 kV.