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In this paper. the harmonic emissions of a 30 × ۶۰۰ kW WT SCIG wind farm are analyzed using field measurements to contribute to the understanding of wind farm harmonic behavior. The following conclusions can be drawn from the investigation. 1) Low-order characteristic harmonics are the dominant ones in the analyzed measurements. 2) A high-order harmonic pattern can also be recognized in the wind farm harmonic spectrum. 3) The harmonic distortion shows a clear random behavior despite the small influence of the wind farm operating point on it. The paper also discusses the analytical and empirical distributions of wind farm harmonic currents in the literature. compares these distributions with those obtained from experimental measurements. and proposes pdf closed forms of wind farm harmonic currents. Thus. the Stacy and the normal–uniform distributions are used to statistically characterize the current magnitudes and phase angles. respectively. This is useful for statistically studying network harmonic distortion in the presence of wind farms and for analyzing the cancellation effect due to the harmonic current phase angle diversity on net harmonic currents injected by wind farms.
