Fig. 5From: Comparative performance analysis of hybrid differential evolution and pattern search technique for frequency control of the electric power systemSystem response with only AC line. a ΔF1, b ΔF2, c ΔPTie\( \left( {\Delta P_{{D1}} = 0.01p.u.MW \& \Delta P_{{D2}} = 0} \right) \). d ΔF1, e ΔF2, f ΔPTie \( \left( {\Delta P_{{D1}} = 0.01p.u.MW \& \Delta P_{{D2}} = 0.02p.u.MW} \right) \)Back to article page