SMARTER WINDS TO THE GRID: POWER QUALITY OPTIMIZATION IN VARIABLE SPEED WIND ENERGY CONVERSION

Abstract

Variable speed wind energy conversion systems (VS-WECS) have emerged as a key technology for efficient utilization of wind resources and grid integration. However, fluctuating wind speeds introduce challenges such as voltage sags, harmonics, and frequency deviations, which can degrade power quality and affect grid stability. This paper presents a comprehensive study on power quality improvement techniques for grid-connected VS-WECS. Advanced control strategies, including active filtering, reactive power compensation, and adaptive pitch control, are employed to mitigate voltage fluctuations and harmonic distortions. Simulation results demonstrate significant reductions in total harmonic distortion (THD) and enhanced voltage profile stability under dynamic wind conditions. The proposed approach ensures reliable, high-quality power delivery to the grid while maximizing energy capture from variable wind resources. These findings highlight the potential of intelligent VS-WECS integration in supporting smart and resilient power grids.