Two synchronous generators G1 and G2 are connected to a power transformer Trand a transmission line as shown below. The system details are as follows:G1: 80 MVA 11KV X” = 20%G2: 60 MVA 11KV X” = 20%Tr. 100 MVA 11/132KV X” = 12%T.L. Xline = j140 Ωa) Draw the system diagram in per unit on a base power =100 MVA and a basevoltage =11KV at the generators side.b) Calculate the three-phase balanced short circuit current (If ) at busbar 3 inAmpere at the high voltage side and at the low voltage side of the transformer.c) Calculate the fault level (MVA)sc in MVA at the high voltage side and at thelow voltage side of the transformer O Two synchronous generators G1 and G2 are connected to a power transformer Trand a transmission line as shown below. The system details are as follows:G1: 80 MVA11KVX" = 20%G2: 60 MVA11KVX" = 20%Tr. 100 MVÀ 11/132KVX" = 12%T.L. Xline = jl140 Qa) Draw the system diagram in per unit on a base power =100 MVA and a basevoltage =11KV at the generators side.b) Calculate the three-phase balanced short circuit current (If ) at busbar 3 inAmpere at the high voltage side and at the low voltage side of the transformer. c) Calculate the fault level (MVA)sc in MVA at the high voltage side and at thelow voltage side of the transformer.123G1TrXline = j140 QG2

To solve this question we 1st calculate the new value of per unit value at given base power and…

Two synchronous generators G1 and G2 are connected to a power transformer Tr and a transmission line as shown below. The system details are as follows: G1: 80 MVA 11KV X” = 20% G2: 60 MVA 11KV X” = 20% Tr. 100 MVA 11/132KV X” = 12% T.L. Xline = j140 Ω a) Draw the system diagram in per unit on a base power =100 MVA and a base voltage =11KV at the generators side. b) Calculate the three-phase balanced short circuit current (If ) at busbar 3 in Ampere at the high voltage side and at the low voltage side of the transformer. c) Calculate the fault level (MVA)sc in MVA at the high voltage side and at the low voltage side of the transformer

Two synchronous generators G1 and G2 are connected to a power transformer Tr and a transmission line as shown below. The system details are as follows: G1: 80 MVA 11KV X” = 20% G2: 60 MVA 11KV X” = 20% Tr. 100 MVA 11/132KV X” = 12% T.L. Xline = j140 Ω a) Draw the system diagram in per unit on a base power =100 MVA and a base voltage =11KV at the generators side. b) Calculate the three-phase balanced short circuit current (If ) at busbar 3 in Ampere at the high voltage side and at the low voltage side of the transformer. c) Calculate the fault level (MVA)sc in MVA at the high voltage side and at the low voltage side of the transformer

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.54P: An infinite bus, which is a constant voltage source, is connected to the primary of the...

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