QUESTION ONE A three-phase 20 MVA, 11 kV generator has a reactance of 10% and is connected via a bank of three single-phase transformers to a transmission line whose series reactance is 100 2. The transmission line is supplying a load of 10 MVA at 10 kV and 0.8 power factor. The transformer bank at the generator end is connected in delta on the generator side and in star on the transmission line side and the transformer on the load side is star-star connected. Each of the single phase transformers in the bank of transformers is rated at 10 MVA, 11/110 kV with a reactance of 8%. Draw the pu circuit diagram for a system base of 10 MVA, 15 kV in the load circuit. Calculate the voltage at the generator terminals.

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QUESTION ONE
A three-phase 20 MVA, 11 kV generator has a reactance of 10% and is connected via a bank of
three single-phase transformers to a transmission line whose series reactance is 100 2. The
transmission line is supplying a load of 10 MVA at 10 kV and 0.8 power factor. The transformer
bank at the generator end is connected in delta on the generator side and in star on the
transmission line side and the transformer on the load side is star-star connected. Each of the
single phase transformers in the bank of transformers is rated at 10 MVA, 11/110 kV with a
reactance of 8%. Draw the pu circuit diagram for a system base of 10 MVA, 15 kV in the load
circuit. Calculate the voltage at the generator terminals.
Transcribed Image Text:QUESTION ONE A three-phase 20 MVA, 11 kV generator has a reactance of 10% and is connected via a bank of three single-phase transformers to a transmission line whose series reactance is 100 2. The transmission line is supplying a load of 10 MVA at 10 kV and 0.8 power factor. The transformer bank at the generator end is connected in delta on the generator side and in star on the transmission line side and the transformer on the load side is star-star connected. Each of the single phase transformers in the bank of transformers is rated at 10 MVA, 11/110 kV with a reactance of 8%. Draw the pu circuit diagram for a system base of 10 MVA, 15 kV in the load circuit. Calculate the voltage at the generator terminals.
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