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Voltage and power quality improvement strategy for a DFIG wind farm during variable wind conditions

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5 Author(s)
Meegahapola, L. ; Queen''s Univ. of Belfast, Belfast, UK ; Littler, T. ; Fox, B. ; Kennedy, J.
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This paper presents a voltage and power quality enhancement scheme for a doubly-fed induction generator (DFIG) wind farm during variable wind conditions. The wind profiles were derived considering the measured data at a DFIG wind farm located in Northern Ireland (NI). The aggregated DFIG wind farm model was validated using measured data at a wind farm during variable generation. The voltage control strategy was developed considering the X/R ratio of the wind farm feeder which connects the wind farm and the grid. The performance of the proposed strategy was evaluated for different X/R ratios, and wind profiles with different characteristics. The impact of flicker propagation along the wind farm feeder and effectiveness of the proposed strategy is also evaluated with consumer loads connected to the wind farm feeder. It is shown that voltage variability and short-term flicker severity is significantly reduced following implementation of the novel strategy described.

Published in:

Modern Electric Power Systems (MEPS), 2010 Proceedings of the International Symposium

Date of Conference:

20-22 Sept. 2010