Investigating the Impact of Wind Power Integration on Damping Characteristics of Low Frequency Oscillations in Power Systems

This paper investigates the impact of doubly-fed induction generator (DFIG) wind farms on system stability in multi-generator power systems with low-frequency oscillations (LFOs). To this end, establishes interconnection model equivalent generators and derives state equation. On basis, an updated equation new integrated is further derived. Then, according to equation, factors that cause changes damping characteristics are presented. The IEEE two-area four-machine used as a simulation which LFOs occur. results demonstrate connection feeding area (PFA) increases ratio dominant mode inter-area oscillation from ?0.0263 ?0.0107, obviously improves stability. Furthermore, integration into PFA, distance increases, gradually decreases ?0.0236, approaching no system. Meanwhile, increase output capacity, intra-area maximum ratios reach 0.1337 0.0233, respectively.