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

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Problem 1 A Single Line Diagram Of A Four Bus System Is Shown Below For Which Zbus Is Given As Follows Zbus 0 25 0 2 1 (104.42 KiB) Viewed 45 times

Problem 1: A single-line diagram of a four-bus system is shown below, for which Zbus is given as follows: Zbus 0.25 0.2 0.16 0.14 0.2 0.23 0.15 0.151 L0.14 0.151 01 0.16 0.15 0.196 0.1 0.195 Let a three-phase fault occur at bus 2 of the network. (a) Calculate the initial symmetrical rms current in the fault. (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. Bus 3 (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 1/0° p.u., and neglect all prefault currents. m j0.25 j0.25 j0.1 O jo.2 Bus 2 per unit j0.125 Bus 1 j0.2 j0.4 (ground is the reference node) ли Bus 4 j0.1 O jo.2