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A new method to mitigate voltage fluctuation of a fixed speed wind farm using DFIG wind turbine

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3 Author(s)
Gogdare, A.N. ; Electr. Eng. Dept., Shahed Univ., Tehran, Iran ; Doroudi, A. ; Ghaseminejad, M.

One of the important power quality aspects is flicker. Wind turbines are a source of power fluctuations which may cause flicker disturbances. There are numerous of factors that affect flicker emission of grid-connected wind turbines during continuous operation, such as wind characteristics (e.g. mean wind speed, turbulence intensity) and grid conditions (e.g. short circuit capacity, grid impedance angle, load type). The type of wind turbine also has influence on flicker emission. In this paper, the flicker emission of wind turbines equipped with squirrel-cage induction generators is investigated. Also show that in a wind farm by the replacement of some fixed speed wind turbines with DFIG wind turbines can reduce the flicker emission. This wind farm model has been implemented and simulated by using MATLAB/ Simulink. Simulation results show that the combination of fixed speed and variable speed wind turbines in output voltage of fixed speed wind farms is an effective means for flicker mitigation during continuous operation.

Published in:

Electrical Power Distribution Networks (EPDC), 2012 Proceedings of 17th Conference on

Date of Conference:

2-3 May 2012