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1) 1 T2 T2 4 Machine 1 Machine 2 Kroon AK YA Two synchronous machines are connected through three-phase transformers to the transmission line shown in below fig.The ratings and reactances of the machines and transformers are Machines 1 and 2: 100 MVA, 20 kV; X"₁ = X₁ = X₂ = 20%, X₁ = 4%, X = 5% X = 8% Transformers 7, and 72: 100 MVA, 200/345Y KV; X, On a chosen base of 100 MVA, 345 kV in the transmission-line circuit the line reactances are X₁ = X2 = 15% and X₁ = 50%. Draw cach of the three sequence networks and find the zero-sequence bus impedance matrix by means of the Zhus building algorithm. Find the fault current if L-G fault occurs at the terminals of Machine2.

1) 1 T2 T2 4 Machine 1 Machine 2 Kroon AK YA Two synchronous machines are connected through three-phase transformers to the transmission line shown in below fig.The ratings and reactances of the machines and transformers are Machines 1 and 2: 100 MVA, 20 kV; X"₁ = X₁ = X₂ = 20%, X₁ = 4%, X = 5% X = 8% Transformers 7, and 72: 100 MVA, 200/345Y KV; X, On a chosen base of 100 MVA, 345 kV in the transmission-line circuit the line reactances are X₁ = X2 = 15% and X₁ = 50%. Draw cach of the three sequence networks and find the zero-sequence bus impedance matrix by means of the Zhus building algorithm. Find the fault current if L-G fault occurs at the terminals of Machine2.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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1) 1 T2 T2 4 Machine 1 Machine 2 Kroon AK YA Two synchronous machines are connected through three-phase transformers to the transmission line shown in below fig.The ratings and reactances of the machines and transformers are Machines 1 and 2: 100 MVA, 20 kV; X"₁ = X₁ = X₂ = 20%, X₁ = 4%, X = 5% X = 8% Transformers 7, and 72: 100 MVA, 200/345Y KV; X, On a chosen base of 100 MVA, 345 kV in the transmission-line circuit the line reactances are X₁ = X2 = 15% and X₁ = 50%. Draw cach of the three sequence networks and find the zero-sequence bus impedance matrix by means of the Zhus building algorithm. Find the fault current if L-G fault occurs at the terminals of Machine2.
Transcribed Image Text:1) 1 T2 T2 4 Machine 1 Machine 2 Kroon AK YA Two synchronous machines are connected through three-phase transformers to the transmission line shown in below fig.The ratings and reactances of the machines and transformers are Machines 1 and 2: 100 MVA, 20 kV; X"₁ = X₁ = X₂ = 20%, X₁ = 4%, X = 5% X = 8% Transformers 7, and 72: 100 MVA, 200/345Y KV; X, On a chosen base of 100 MVA, 345 kV in the transmission-line circuit the line reactances are X₁ = X2 = 15% and X₁ = 50%. Draw cach of the three sequence networks and find the zero-sequence bus impedance matrix by means of the Zhus building algorithm. Find the fault current if L-G fault occurs at the terminals of Machine2.
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