A 300MVA, 20KV three-phase generator has a reactance of 20%. The generator supplies a number of synchronous motors over a 64Km transmission line having transformers at both ends as shown on the one line diagram. The motors all rated 13.2KV are represented by two equivalent motors. Rated inputs to the motors are 200MVA and 100MVA for Ml and M2 respectively. For both motors X= 20%. The three-phase transformers T1 is rated 350MVA, 20/230KV with leakage reactance of 10%. Transformer T2 is composed of three single-phase transformers each rated 127/13.2KV, 100MVA with leakage reactance of 10%, series reactance of transmission line is 0.50/Km. Draw the reactance diagram with all reactance marked in per unit, select the generator rating as a base.

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( A 300MVA, 20KV three-phase generator has a reactance of 20%. The
generator supplies a number of synchronous motors over a 64Km
transmission line having transformers at both ends as shown on the
one line diagram. The motors all rated 13.2KV are represented by two
equivalent motors. Rated inputs to the motors are 200MVA and
100MVA for M1 and M2 respectively. For both motors X= 20%. The
three-phase transformers T1 is rated 350MVA, 20/230KV with
leakage reactance of 10%. Transformer T2 is composed of three
single-phase transformers each rated 127/13.2KV, 100MVA with
leakage reactance of 10%, series reactance of transmission line is
0.52/Km. Draw the reactance diagram with all reactance marked in
per unit, select the generator rating as a base.
(M1
230KV
G1)
(M2
20KV
Transcribed Image Text:( A 300MVA, 20KV three-phase generator has a reactance of 20%. The generator supplies a number of synchronous motors over a 64Km transmission line having transformers at both ends as shown on the one line diagram. The motors all rated 13.2KV are represented by two equivalent motors. Rated inputs to the motors are 200MVA and 100MVA for M1 and M2 respectively. For both motors X= 20%. The three-phase transformers T1 is rated 350MVA, 20/230KV with leakage reactance of 10%. Transformer T2 is composed of three single-phase transformers each rated 127/13.2KV, 100MVA with leakage reactance of 10%, series reactance of transmission line is 0.52/Km. Draw the reactance diagram with all reactance marked in per unit, select the generator rating as a base. (M1 230KV G1) (M2 20KV
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