Calculation and Analysis Method of Power Quality in Wind-power-storage Combined System Based on ETAP

The increasing integration of expansive wind farms into the power grid, along with the widespread implementation of energy storage on the grid, has led to a growing focus on the power quality issue within the combined wind power storage system. Therefore, this paper analyzes the power quality of the wind-power-storage combined system from the aspects of harmonic analysis, voltage fluctuation, and power flicker, aiming at the wind power injection and energy storage access to the power system, and proposes an ETAP-based power quality calculation and analysis method for the wind-power-storage combined system. Based on a combined wind power storage system, the method proposed in this paper is simulated and analyzed by using ETAP software to calculate the harmonic content, voltage fluctuation, and power flicker value of the system. The simulation results show that the method proposed in this paper can be effectively used to analyze and evaluate the power quality problems of the combined wind power storage system.