doubleoinfo07
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- Sep 7, 2016
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Can anyone explain how to do Graffeo example 49 using MVA method.
The problem reads: The following system was operating at no load and rated voltage, when suddenly a tree fell causing a single line to ground fault at bus 2. Find the fault current.
Parameters:
Generators: 200MVA, 13.8KV, X"= X2 = 25%, Xo = 4.2%
Transformers: 200MVA, 13.8/230KV, X = 12%
Transmission Line: X1 = X2 = 17%, Xo = 48%.
im having issues uploading the picture. Basically it's a generator, 2 transformers, and another generator, all in series. Buses 1 and 2 "sandwich" (so-to-speak) transformer one and buses 3 and 4 sandwich transformer 2. The fault occurs on bus 2.
Thanks and good luck to everyone.
The problem reads: The following system was operating at no load and rated voltage, when suddenly a tree fell causing a single line to ground fault at bus 2. Find the fault current.
Parameters:
Generators: 200MVA, 13.8KV, X"= X2 = 25%, Xo = 4.2%
Transformers: 200MVA, 13.8/230KV, X = 12%
Transmission Line: X1 = X2 = 17%, Xo = 48%.
im having issues uploading the picture. Basically it's a generator, 2 transformers, and another generator, all in series. Buses 1 and 2 "sandwich" (so-to-speak) transformer one and buses 3 and 4 sandwich transformer 2. The fault occurs on bus 2.
Thanks and good luck to everyone.
