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1 2 X₁ = 0.2 XL = 0.3 V = 1.0 озе 00 XL2-0.3 X'=0.3 A 50Hz synchronous generator having inertia constant H=5MJ/MVA and a direct axis transient reactance X = 0.3 per unit is connected to an infinite bus through a purely reactive circuit as shown above. Reactances in per unit on a common system base are marked on the diagram. The generator is delivering real power P = 0.8 per unit and Q = 0.074 per unit to the infinite bus at a voltage V = 1.0 per unit when a 3- phase fault occurs at the receiving end. Determine the critical clearing angle.

1 2 X₁ = 0.2 XL = 0.3 V = 1.0 озе 00 XL2-0.3 X'=0.3 A 50Hz synchronous generator having inertia constant H=5MJ/MVA and a direct axis transient reactance X = 0.3 per unit is connected to an infinite bus through a purely reactive circuit as shown above. Reactances in per unit on a common system base are marked on the diagram. The generator is delivering real power P = 0.8 per unit and Q = 0.074 per unit to the infinite bus at a voltage V = 1.0 per unit when a 3- phase fault occurs at the receiving end. Determine the critical clearing angle.

Power System Analysis and Design (MindTap Course List)
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
Chapter7: Symmetrical Faults
Section: Chapter Questions
Problem 7.34P
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X₁ = 0.2 1 XL = 0.3 V = 1.0 озе 00 XL2-0.3 X'=0.3 A 50Hz synchronous generator having inertia constant H=5MJ/MVA and a direct axis transient reactance X = 0.3 per unit is connected to an infinite bus through a purely reactive circuit as shown above. Reactances in per unit on a common system base are marked on the diagram. The generator is delivering real power P = 0.8 per unit and Q = 0.074 per unit to the infinite bus at a voltage V = 1.0 per unit when a 3- phase fault occurs at the receiving end. Determine the critical clearing angle.
Transcribed Image Text:X₁ = 0.2 1 XL = 0.3 V = 1.0 озе 00 XL2-0.3 X'=0.3 A 50Hz synchronous generator having inertia constant H=5MJ/MVA and a direct axis transient reactance X = 0.3 per unit is connected to an infinite bus through a purely reactive circuit as shown above. Reactances in per unit on a common system base are marked on the diagram. The generator is delivering real power P = 0.8 per unit and Q = 0.074 per unit to the infinite bus at a voltage V = 1.0 per unit when a 3- phase fault occurs at the receiving end. Determine the critical clearing angle.
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