Insert impact of large-scale wind power generation on the dynamic behaviour of interconnected systems

Abstract

This paper deals with the impact of increased wind power generation on the behavior of the interconnected system during and after a contingency situation. The issues considered are the post-fault damping behavior of electromechanical oscillations, performance during a severe short-circuit and frequency stability after a sudden loss of generation. First, the doubly-fed induction (DFIM) based wind turbine and a conventional synchronous generator were simulated in a standalone mode to demonstrate the fundamental differences in terms of their damping behavior. The model was then extended to investigate the characteristic behavior of the DFIM during a severe fault to assess the limits of its fault ride-through capability. Finally, using a large interconnected system the effect of increased wind power generation on the frequency stability of the system after a loss of generation has been discussed.