(Solved): C. The one-line diagram of a simple power system is shown in Figure Q2. Each generator is represent ...

C. The one-line diagram of a simple power system is shown in Figure Q2. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common MVA base. All resistances and shunt capacitances are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A three-phase fault occurs at bus 1 through a fault impedance of Zf=j0.06 per unit. (a) Using Thévenin's theorem obtain the impedance to the point of fault and the fault current in per unit. [6 marks] (b) Determine the bus voltages and line currents during fault. [10 marks 3 X? = 0.2 1 2 XL = 0.3 Oto Eato X = 0.1 Figure Q2 oto O X = 0.1