Determine the fault current in amps, except with a bolted double line-to-ground fault at each of the
Question:
Determine the fault current in amps, except with a bolted double line-to-ground fault at each of the buses. Compare the fault currents with the values given in Table 9.4.
Table 9.4
Transcribed Image Text:
Single Line-to-Ground Fault Fault Current (Phase A) Bus per unit/degrees 1 46.02/-90.00 2 3 4 5 14.14/-90.00 64.30/-90.00 56.07/-90.00 42.16/-90.00 GEN LINE OR TRSF G1 T1 L1 L2 G2 T2 L1 L3 T2 L2 L3 T1 Contributions to Fault Current Bus-to-Bus GRND-1 5-1 4-2 5-2 GRND-3 4-3 2-4 5-4 3-4 2-5 4-5 1-5 Phase A 34.41/-90.00 11.61/-90.00 5.151/ 90.00 8.984/-90.00 56.19/-90.00 8.110/-90.00 1.742/-90.00 Current Phase B per unit/degrees 5.804/ 90.00 5.804/-90.00 5.804/90.00 5.804/90.00 0.1124/90.00 0.1124/90.00 0.1124/ 90.00 0.1124/-90.00 4.055/-90.00 4.055/90.00 0.4464/90.00 2.679/90.00 3.125/-90.00 0.6716/90.00 4.029/90.00 4.700/-90.00 4.055/-90.00 4.055/90.00 0.4464/90.00 2.679/90.00 Phase C 10.46/-90.00 43.88/-90.00 3.125/-90.00 2.621/-90.00 0.6716/90.00 15.72/-90.00 4.029/90.00 23.82/-90.00 4.700/-90.00
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Related Book For
Power System Analysis And Design
ISBN: 9781305632134
6th Edition
Authors: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
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