Find the bus impedance matrix for the diagram shown in figure using $Z_{bus}$ building algorithm. Also find the fault current, if the fault occur at bus-3. [ Note: use two decimal digits] (5 marks)
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From the given diagram, we can see that there are 3 buses in the system. Show more…
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Sri K.
A 4-bus sample power system is shown in Fig. Perform the short circuit analysis for a three-phase solid fault on bus 4. Data are given below: G1: 11.2 kV, 100 MVA, X = 0.08 p.u G2: 11.2 kV, 100 MVA, X = 0.08 p.u T1: 11/110 kV, 100 MVA, X = 0.06 p.u T2: 11/110 kV, 100 MVA, X = 0.06 p.u Assume pre-fault voltages of 1.0 p.u and pre-fault currents to be zero.
We know that bus 4 in a power system has a voltage of 1.04 pu when a three phase fault occurs. The Thevenin reactance looking from bus 4 to the rest of the system is 0.3 pu; Find the fault current at bus 4.
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