Abstract

The increasing penetration of Doubly Fed Induction Generator (DFIG) based wind turbines in the power system will result in the reduction of total system inertia. This will require new methods to control the grid frequency. This paper proposes two control methods for primary frequency control namely speed delay recovery control and droop control. Small-perturbation, linear, dynamic, transfer function models are used for the simulation of primary frequency regulation services for single-area and two-area power systems with a mix of conventional and non-conventional DFIG-based wind generators. Variation in DFIG penetration levels on system frequency control performance has been examined.