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Consider the system Shown in the single-line diagram of Figure (2). All reactance are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u.
Consider the system shown in the single-line diagram of Figure (3). All reactances are shown in per unit to the same base. Assume that the voltage at both sources is \(1 \mathrm{p}\).u. a- Find the fault current due to a bolted- three-phase short circuit at bus \(3 .[10\) points \(]\) b- Find the fault current supplied by each generator and the voltage at each of the buses 1 and 2 under fault conditions. \([10\) points \(]\)
Consider the system shown in the single-line diagram of Figure 4. The required sequence reactances in per unit to the same base are as follows: G1 X1 = X2 = 0.12 G2 X1 = X2 = 0.24 G3 X1 = X2 = 0.12 Transformers X11=X12= 0.12 Lines: Positive and X13=X12= 0.20 Negative Sequence a. Draw the positive-, and negative- sequence reactance diagrams. [6 Points] b- Determine the The'venin's equivalent of each sequence network as viewed from a fault in the...
Obtain the per unit impedance and reactance diagram of the power system shown in Figure.1 G1 : 30MVA, 10.5KV, X” = 1.6 Ω G2 : 15MVA, 6.6KV, X” = 1.2 Ω G3 : 25MVA, 6.6KV, X” = 0.56 Ω T1 (Three Phase) : 15MVA, 33/11 KV, X=15.2 Ω per phase on high tension side. T2 (Three Phase) : 15MVA, 33/6.2 KV, X=16 Ω per phase on high tension side. Transmission line = 20.5 Ω / phase Load A = 15...