An integrated power flow solution of Flexible AC Transmission systems containing wind energy conversion systems

This paper presents a general steady-state modelling approach of power networks having wind farms and FACTS devices. A mathematical formulation is then proposed where the state variables associated with wind farms and FACTS devices are combined with the nodal voltage magnitudes and angles of the transmission network for a unified iterative solution of the power flow problem. Additionally, a suitable wind generator model based on a permanent magnet synchronous generator for power flow studies is introduced, which allows for a direct voltage magnitude´s control at the high-voltage side of the wind generator´s transformer. Lastly, two numerical examples are presented which show how the suggested approach performs.