Problem 1: A single-line diagram of a four-bus system is shown below, for which Zbu is given as follows: Zu=j 0.25 0.2 0

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Problem 1 A Single Line Diagram Of A Four Bus System Is Shown Below For Which Zbu Is Given As Follows Zu J 0 25 0 2 0 1 (27.6 KiB) Viewed 47 times

Problem 1: A single-line diagram of a four-bus system is shown below, for which Zbu is given as follows: Zu=j 0.25 0.2 0.16 0.2 0.23 0.15 0.16 0.15 0.196 L014 0151 01 Let a three-phase fault occur at bus 2 of the network. (a) Calculate the initial symmetrical rms current in the fault. Bus 3 (b) Determine the voltages during the fault at buses 1, 3, and 4. (c) Compute the fault currents contributed to bus 2 by the adjacent unfaulted buses 1, 3, and 4. m (d) Find the current flow in the line from bus 3 to bus 1. Assume the pre- fault voltage V, at bus 2 to be 1/2 p.u., and neglect all prefault currents. j0.25 10.25 10.1 0.14 0.151 0.1 0.195. 10.2 Bus 2 per unit 0.125 Bus 1 10.2 10.4 (ground is the reference node) m Bus 4 10.1 10.2