Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 17 Jan 2018 My Price 8.00

four-bus power system

Determine Ybus in per-unit for the circuit in Problem 7.12. Then invert Ybus to obtain Zbus.

Problem 7.12

Equipment ratings for the four-bus power system shown in Figure 7.14 are as follows:

A three-phase short circuit occurs at bus 1, where the prefault voltage is 525 kV. Prefault load current is neglected. Draw the positive-sequence reactance diagram in

 Figure 7.14

per-unit on a 1000-MVA, 20-kV base in the zone of generator G3. Determine (a) the The´venin reactance in per-unit at the fault, (b) the subtransient fault current in perunit and in kA rms, and (c) contributions to the fault current from generator G1 and from line 1–2.

Answers

Maurice Tutor
(5)
Status NEW Posted 17 Jan 2018 05:01 PM My Price 8.00

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