Local supervisory algorithm for reactive power dispatching of a wind farm

Doubly fed induction generators (DFIG) are more and more used in wind farms. Their reactive power generation capabilities are related to their operating points (wind speeds). This paper describes a hierarchical supervisory of the reactive power in a wind farm and focuses on the reactive power local supervisory unit of each DFIG based wind generator. In this context, a local supervisory algorithm is proposed for reactive power dispatching by taking into account three modes of the wind farm operating.