Influences of Large Scale Wind/Solar Integration on Distrabution System Transient Stability

摘要

In recent years, the construction of distributed energy in China has entered a period of rapid development. The stability influence of large-scale access of distributed generation (DG) to distribution network can't be ignored. Firstly, it analyzes the torque and speed characteristics of double-fed induction generator (DFIG), and it is studied that the influence on the transient stability of distribution network. Secondly, based on the extended equal-area criterion (EEAC), the influence of wind power and photovoltaic (PV) connection on the transient stability of distribution network is theoretically analyzed. The output power of DFIG and PV is equated to the mechanical power of synchronous generator, and the control function of DFIG and PV is considered at the same time. Based on this, the influence of DFIG and PV integration on distribution network transient stability is analyzed. Finally, the correctness of the mechanism analysis is verified by simulation.