Optimal corrective control for the stability enhancement of power systems considering wind penetration

This paper proposes an optimal corrective control method to enhance the small signal stability of power systems considering grid-connected wind penetration. The proposed method can optimally compute the amount of generator decreasing and load shedding at selected buses to damp the oscillation. The optimal corrective control procedure for small signal stability enhancement has been present. An eigenvalue sensitivity based optimal corrective control problem with linearized small signal stability constraint is introduced and solved in an iteration manner. Effectiveness of the proposed method is demonstrated by numerical simulation on a modified example of 16-machine power system with 3 grid-connected wind farms.