(Solved): Consider a power system network as shown in the following figure. The generator is supplying power ...

Consider a power system network as shown in the following figure. The generator is supplying power to an infinite bus through a double circuit transmission line. Each line is equipped with two transformers for proper voltage conditioning and the infinite bus is represented by a voltage source ${\mathrm{V}}_{\mathrm{b}}$ in series with a reactance ${\mathrm{X}}_{\mathrm{b}}$. The system parameter set is given below: 1) Pick one value for each parameter from the ranges given above. 2) Construct the pre-fault equivalent circuit and calculate the transfer reactance between generator and infinite bus. 3) Calculate the initial value of rotor angle. 4) Consider a three-phase bolted fault at any location of the transmission network. Construct the during-fault equivalent circuit and calculate the transfer reactance between generator and infinite bus. 5) Identify the accelerating area from the power-angle curve. 6) Assume a method of fault clearing. Construct the post-fault equivalent circuit and calculate the transfer reactance between generator and infinite bus. 7) Show the decelerating area from the power-angle curve. 8) Calculate the critical clearing angle.