Impactos da Inserção de Grandes Parques Eólicos na Estabilidade Angular Transitória do Sistema
Keywords: Transient angular stability, high penetration of wind farms, oscillations damping strategies
AbstractWith the increasing number of wind farms in the interconnected electrical system, the impact of the penetration of this type of renewable generation has become a very important issue, especially when it comes to maintaining the stability of the system. From this scenario, this work investigates the influence on the transient angular stability due to the entry of large wind farms that use the technology of double fed induction generator. Seeking to increase the contribution of wind turbines in damping oscillations, this work proposes the installation of an additional stabilizing signal in the voltage control loop associated with wind turbine rotor converters. The proposed methodology is then validated in an equivalent Brazilian system in the presence of large perturbations. The results obtained show that the procedure performed contributes to the reduction of oscillations and increase of the damping of impacts, mainly considering faults in the vicinity of the coupling point of the wind farms to the interconnected system.