A small-signal stability related probabilistic security assessment of wind power integration into power systems

In this paper, the impact of wind power generation in power systems on electromechanical oscillations is studied while both deterministic and probabilistic approaches are used. A probabilistic small signal security index is proposed to investigate the relationship between the probability of having poorly damped inter-area oscillations and the size of a wind farm to be interconnected with a power system network. This work includes small signal stability analyses performed on a two-area power system model involving two different types of wind turbine generators, squirrel-cage and doubly-fed induction generators.