Determine the fault current and the bus voltages, Electrical Engineering

The one line diagram of a simple three-bus power system is shown in the figure below.  Each generator is represented by an emf behind the transient reactance.  All impedances are expressed in per unit on a common 100 MVA base, and for simplicity, resistances are neglected. The following assumptions are made:

  • Shunt capacitances are neglected and the system is considered on no-load.
  • All generators are running at their rated voltage and rated frequency with their emfs in phase.

1913_Determine the Fault Current and the Bus Voltages.png

Determine the fault current, the bus voltages, and the line currents during the fault when:

(a) a balanced three-phase fault with fault impedance Zf   = j0.02 pu occurs on bus 1;

(b) a bolted 3-phase fault occurs on bus 3.

Posted Date: 3/22/2013 6:16:34 AM | Location : United States







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