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2012 (Vol. 4, Issue: 05)
Article Information:

Power Quality Investigation in a Wind Power Generation System

F. Gharehdaghi, H. Jamali, M. Deysi and A. Khalili
Corresponding Author:  F. Gharedaghi 

Key words:  Grid impedance, power quality evaluation, wind power, , , ,
Vol. 4 , (05): 433-438
Submitted Accepted Published
2011 September, 14 2011 October, 15 2012 March, 01

Realizing the growing importance of wind energy, manufacturers have steadily been increasing the unit size of the wind electric generators since the late 1980s. The connection of large wind farms to the grid may cause problems in terms of power quality due to the variability of the energy extracted from the wind. The mentioned power quality problems are generally taken into consideration after the grid integration of wind farms. This paper discusses on the grid impedance evaluation method at wind farm terminals. The non-intrusive method uses variations of the wind power production, and this permanent variability allows us to apply the source impedance identification process, assuring its assessment. New algorithms are developed taking as a reference the accurate GPS synchronized measurement of phase at a very stable power plant, to evaluate the source impedance at a wind farm Point of Common Coupling (PCC) where complex variations of the voltage are expected. The instantaneous value of the grid impedance will, not only, allow assigning responsibilities but also will facilitate the design of equipments, network components, control systems tuning and protections configuration. The development of dispersed generation will be positively influenced by the capacity of measuring the network strength.
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  Cite this Reference:
F. Gharehdaghi, H. Jamali, M. Deysi and A. Khalili, 2012. Power Quality Investigation in a Wind Power Generation System.  Research Journal of Applied Sciences, Engineering and Technology, 4(05): 433-438.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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