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(Solved): 1.6 The Zbus Matrix of the power system shown is figure 2 is: j[[0.0295,0.0178,0.0256],[0.0178,0.023 ...



1.6 The Zbus Matrix of the power system shown is figure 2 is:

j[[0.0295,0.0178,0.0256],[0.0178,0.0236,0.0197],[0.0256,0.0197,0.0570]]

1.6.1 An additional line whose reactance is 0,075 per unit is installed between buses 2 and 3 given: Determine the fault if a three-phase fault occurs at bus 3. The pre-fault voltage at bus at all buses are 1.05 per unit. 1.6.2 Resistor

R_(1)

and

R_(2)

of

2\Omega

's are added between bus 1 and 2 and bus 1 and 3 respectively. Calculate the bus voltages before the 0.075 reactance was added in per unit and they is NO FAULT.



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