GATE EE 2019 Set 1 — Question 61
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Electrical Machines → Power System Stability → Swing Equation & Power-Angle
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Question
In the single machine infinite bus system shown below, the generator is delivering the real power of at power factor lagging to the infinite bus. The power angle of the generator in degrees (round off to one decimal place) is ________.
Correct answer
19 to 22
Solution
Given: at lagging, so ; infinite bus voltage .Step 1: Total series reactance
From the diagram, the generator transient reactance , the transformer and the two parallel lines are in series between the internal emf and the infinite bus:Step 2: Current delivered to the busLagging current: Step 3: Internal emfStep 4: Power angle
The power angle is the angle of relative to :Answer:
From the diagram, the generator transient reactance , the transformer and the two parallel lines are in series between the internal emf and the infinite bus:Step 2: Current delivered to the busLagging current: Step 3: Internal emfStep 4: Power angle
The power angle is the angle of relative to :Answer:
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