Il Bus A G1 Line 1 T2 G2 Bus B T3 Line 2 Bus C T4 A M3 M4 Figure 1. 1) The power system consists of generators, motors, transformers, and transmission lines. The ratings are as follows: G1: 3-phase generator 25 MVA, 11.8 KV, X" = 0.9747 G2:3-phase generator 20 MVA, 10.2 KV, X=0.7976 M3: 3-phase motor M4: 3-phase motor T1:3-phase transformer T2: 3-phase transformer T3:3 single phase transformer T4:3 single phase transformer Line 1 Line 2 30 MVA, 26 KV, X-3.025 Ω 15 MVA, 18 KV, X"-2.25 Ω 25 MVA, 11.8 Y - 115 KV Y X = 0.6962 on the low voltage 20 MVA, 10.2 Y- 115 KV Y X=0.5896 on the low voltage each rating 10 MVA, 27.5/66.4 KV X=41.8792 on the high voltage each rating 5 MVA, 10.4/115 KV X=41.8792 on the high voltage Χ = 100 Ω Χ = 100 Ω A) Find the reactance (X) in p.u. using the basic principle of 30 MVA, 26 KV. B) Draw a reactance diagram with all values of X in p.u.

Il Bus A G1 Line 1 T2 G2 Bus B T3 Line 2 Bus C T4 A M3 M4 Figure 1. 1) The power system consists of generators, motors, transformers, and transmission lines. The ratings are as follows: G1: 3-phase generator 25 MVA, 11.8 KV, X" = 0.9747 G2:3-phase generator 20 MVA, 10.2 KV, X=0.7976 M3: 3-phase motor M4: 3-phase motor T1:3-phase transformer T2: 3-phase transformer T3:3 single phase transformer T4:3 single phase transformer Line 1 Line 2 30 MVA, 26 KV, X-3.025 Ω 15 MVA, 18 KV, X"-2.25 Ω 25 MVA, 11.8 Y - 115 KV Y X = 0.6962 on the low voltage 20 MVA, 10.2 Y- 115 KV Y X=0.5896 on the low voltage each rating 10 MVA, 27.5/66.4 KV X=41.8792 on the high voltage each rating 5 MVA, 10.4/115 KV X=41.8792 on the high voltage Χ = 100 Ω Χ = 100 Ω A) Find the reactance (X) in p.u. using the basic principle of 30 MVA, 26 KV. B) Draw a reactance diagram with all values of X in p.u.

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 3.45P: Figure 3.39 shows a oneline diagram of a system in which the three-phase generator is rated 300 MVA,...

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