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The Fig. P3.1 shows the one-line diagram of a simple four-bus power system. It is given that all the lines are characterized by a series impedance of 0.1 + j0.7 ohm/km and a shunt admittance of j0.35 times 10degree S k/m. Lines are rated at 220 kV. Use the base values 220 kV and 100 MVA. Take ground as a reference. Express all impedances and admittances in per unit. Perform a load flow study for the system of Fig. P3.1. The bus power and voltage specifications are given Table P3.1. Compute the unspecified bus voltages, all bus powers, and all line flows. Assume unlimited Q sources. The Fig. P3.1 shows the one-line diagram of a simple four-bus power system. It is given that all the lines are characterized by a series impedance of 0.1 + j0.7 ohm/km and a shunt admittance of j0.35 times 10degree S k/m. Lines are rated at 220 kV. Use the base values 220 kV and 100 MVA. Take ground as a reference. Express all impedances and admittances in per unit. Perform a load flow study for the system of Fig. P3.1. The bus power and voltage specifications are given Table P3.1. Compute the unspecified bus voltages, all bus powers, and all line flows. Assume unlimited Q sources