For the four bus system as shown in Fig. Determine the fault current when the fault takes place at bus no.1 with fault impedance Z =0 p.u. The Subtransient reactance of the generators and positive sequence reactance of other elements are given. Assume prefault Votage Eth= 120° p.u Generator X = j0.27p.u ; Transmission line X = j0.22p.u ; Transformer X = j0.47p.u 十章1十。 Y스 Zth in p.u Fault current lț in p.u

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Electrical Engineering _ power system analysis.

pls solve in less than 30 min pls .

For the four bus system as shown in Fig. Determine the fault current when the fault takes place at bus no.1
with fault impedance Z; =0 p.u. The Subtransient reactance of the generators and positive sequence reactance
of other elements are given. Assume prefault Votage Eth = 120° p.u
Generator X = j0.27p.u; Transmission line X = j0.22p.u ; Transformer X = j0.47p.u
%3D
À Y=
Zth in p.u
Fault current If in p.u
Transcribed Image Text:For the four bus system as shown in Fig. Determine the fault current when the fault takes place at bus no.1 with fault impedance Z; =0 p.u. The Subtransient reactance of the generators and positive sequence reactance of other elements are given. Assume prefault Votage Eth = 120° p.u Generator X = j0.27p.u; Transmission line X = j0.22p.u ; Transformer X = j0.47p.u %3D À Y= Zth in p.u Fault current If in p.u
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