Fig. 5

System response with only AC line. a ΔF₁, b ΔF₂, c ΔP_Tie\( \left( {\Delta P_{{D1}} = 0.01p.u.MW \& \Delta P_{{D2}} = 0} \right) \). d ΔF₁, e ΔF₂, f ΔP_Tie \( \left( {\Delta P_{{D1}} = 0.01p.u.MW \& \Delta P_{{D2}} = 0.02p.u.MW} \right) \)