Probabilistic Power Quality Indices for an Electric Grid with Wind Energy Conversion System and STATCOM

The higher wind power penetration level there is, the more the power quality is affected in an electric grid. Thus, it is essntial to evaluate the power quality of the electric grid in presence of wind power generation. To examine the power quality, probabilistic indices must be defined to form a foundation for measuring negative effects of different disturbances on the electric grid. In this paper, the probabilistic power quality indices have been used to make an overall assesment of the power quality of the electric grid in prescene of wind power generation and static synchronous compensator. The purpose of the present study is to evaluate the probabilistic power quality indices for such an electric grid. Figures and Tables present the values of the probabilistic power quality indices and reveal that the static synchronous compensator positively affects some probabilistic power quality indices. Also, control parameters of the static synchronous compensator have been optimized in the form of an optmization problem so that the voltage sag index is minimized. The results show that the optimum values result in less voltage deviation.