Fig. 8From: Effective participation of wind turbines in frequency control of a two-area power system using coot optimizationSystem responses due to + 0.05 pu step load change in Area 1 while including PID controller a \({\Delta \text{F}}_{1}\), b \({\Delta \text{F}}_{2}\), c \({\Delta \text{P}}_{12}\)Back to article page