Reducing voltage flactuations in wind turbines by SVC method

The importance of renewable energy sources has increased gradually on the present energy production depending on the depletion of fossil fuels and increase of global concern lately. Among these renewable energy sources, wind energy appear to occupy a prime position owing to the fact that it is a clean, sustainable and cost-effective energy. However, 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 power quality problems caused by wind turbines are generally examined concerning slow voltage variations, voltage dips, fast voltage variations (flicker), harmonics and frequency variations.One of the most important considerations in grid integration of wind energy is voltage variations. This thesis presents a Static Var Compensator (SVC) for the reactive power regulation of wind turbines in order to decrease voltage fluctuations. The simulation have demonstrated the effective influences of the SVC on voltage profile, even in the case of the sudden changes in voltage magnitude.