Impact of Doubly Fed Wind Turbine Generation on Inter-Area Oscillation Damping

With the penetration of wind power being higher and higher in power systems, the impact of wind turbine generation on inter-area oscillations should be fully investigated. This paper discusses the impact of a doubly fed wind turbine induction generator on the inter-area oscillation in a two-area four-machine system. Models of an induction generator and converter/inverter control loops developed by GE are adopted in this paper. Eigenvalue analysis is employed to investigate the effect of penetration, load parameter, and network topology change on the inter-area oscillation. The results show that increasing the penetration level improves damping significantly. Increasing the voltage control loop gain improves damping as well. The other control loops, such as pitch control and phase-locked loops, have negligible impact on the inter-area oscillation.