Modelling wind turbine-generators for fault ride-through studies

Currently, wind turbine driven generators that are used in wind farms can not take part in voltage and frequency control in the event of fault conditions on the host network. However, the continuous trend of having high penetration of wind power, in recent years, makes it necessary to introduce a new code of practice. On the top of this, grid codes are being revised to include fault ride-through capability of embedded wind generators. This paper provides a through literature review of currently-developed models for fixed speed induction generators (FSIG) and doubly fed induction generators (DFIG), addressing their drawbacks with regard to fault ride-through studies. In addition, the paper proposes new modelling requirements to overcome the identified drawbacks.