Fig. 14From: Novel chaos game optimization tuned-fractional-order PID fractional-order PI controller for load–frequency control of interconnected power systemsComparison of dynamic responses for Test-system 4 under 1% SLP applied in all areas: a ΔF1, b ΔF2, c ΔF3, d ΔPtie1, e ΔPtie2, and f ΔPtie3Back to article page