  Motivated by the inadequacy of conventional control methods for power
networks with a large share of renewable generation, in this paper we study the
(stochastic) passivity property of wind turbines based on the Doubly Fed
Induction Generator (DFIG). Differently from the majority of the results in the
literature, where renewable generation is ignored or assumed to be constant, we
model wind power generation as a stochastic process, where wind speed is
described by a class of stochastic differential equations. Then, we design a
distributed control scheme that achieves load frequency control and economic
dispatch, ensuring the stochastic stability of the controlled network.
