Study of PSASP-based Battery Storage Station to Improve Transient Stability of Wind Power System

Abstract

Affected by wind resources, wind power output has the characteristics of random, fluctuating, and reverse peaking, and there are stability problems when connected to the grid. To improve the stability of wind power systems, a high-power battery energy storage station can be introduced, which can be put into operation quickly when system disturbances occur, not only improving wind power scheduling; but also obtaining stability and economy. Introducing BESS in the double machine equivalent system, analyzing its mechanism of improving system stability from the potential energy perspective based on the equal area theory, studying the influence of capacity configuration and access location on the transient stability characteristics of wind power system, and establishing the electromechanical transient model of BESS in a user-defined manner. Finally, the simulation is verified by PSASP, and a large-scale wind farm is built in the WEPRI36 node case with different levels of disturbance conditions, and the transient stability results are compared with those of the introduced BESS, which shows that the proposed model can effectively improve the transient stability of the wind power system and has strong portability in engineering simulation applications.