Impact of Grid Connection of Large-scale Wind Power Clusteron on Small Signal Stability of Power System

Connection of the large-scale wind power cluster with transmission grid will result in a certain impact on the small signal stability of power system. In this paper, experiments on the large-scale doubly-fed induction generator (DFIG) wind farm group were made to measure small signal stability of power system after the large-scale wind farm group accesses to it, the method used in our study is known as power system probabilistic load flow analysis technique, of which the probability stability evaluation index is referred to for evaluation of the small signal stability. Simulation results of the two-area four-machine system demonstrate that small signal stability of the power system is reduced after the connection of large-scale doubly-fed wind farm group.