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Harmonic analysis in a power system with wind generation

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2 Author(s)
S. A. Papathanassiou ; Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece ; M. P. Papadopoulos

Variable-speed wind turbines inject harmonic currents in the network, which may potentially create voltage distortion problems. In this paper, a case study is presented for a 10-MW wind farm, intended to be connected to a network with extended high-voltage submarine cable lines. First, the system modeling approach and the harmonic load-flow calculation is described. Then, the harmonic impedance of the system is calculated for a variety of configurations and operating conditions, and its main characteristics are discussed. Harmonic load-flow calculations are provided to indicate potential voltage distortion problems. A simplified methodology, suggested in relevant IEC publications, is applied to the system and its results are compared to those of the harmonic load flow. A discussion on the summation of harmonic currents within a wind farm is also included

Published in:

IEEE Transactions on Power Delivery  (Volume:21 ,  Issue: 4 )