(Solved): base on MOTOR Figure 3.32 shows the one-line diagram of a three-phase power system. By selecting a c ...
base on MOTOR
Figure 3.32 shows the one-line diagram of a three-phase power system. By selecting a common base of 100 MVA and 22 kV on the MOTOR side, draw an impedance dia- gram showing all impedances including the load impedance in per-unit. The data are given as follows: Include load impedance in G: 90 MVA T1: 50 MVA T2: 40 MVA T3: 40 MVA T4: 40 MVA M: 66.5 MVA FIGURE 3.32 Problem 3.23 22 kV 22/220 kV 220/11 kV 22/110 kV 110/11 kV 10.45 kV Lines 1 and 2 have series reactances of 48.4 and 65.43 2, respectively. At bus 4, the three-phase load absorbs 57 MVA at 10.45 kV and 0.6 power factor lagging. G x = 0.18 per unit x = 0.10 per unit x = 0.06 per unit x = 0.064 per unit x = 0.08 per unit x = 0.185 per unit T? 2 5 Line 1 220 kV Line 2 110 kV T? M Load