Physics · Power Systems
In a two-machine system connected through a transmission line of reactance X, the initial rotor angles of the generators are δ1 = 45° and δ2 = 30° (power flows from machine 1 to machine 2). After a disturbance, the rotor angles change to δ1' = 35° and δ2' = 20°, respectively. Assuming constant generator internal voltages and line reactance, what happens to the power exchanged between the two generators?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The magnitude of power exchanged increases, but the direction remains unchanged.
- 2The magnitude of power remains identical, but the direction of power exchange is reversed.
- 3Both the magnitude and direction of the power exchange remain completely unchanged.
- 4The magnitude of power exchanged decreases, but the direction remains unchanged.✓
Correct answer
The magnitude of power exchanged decreases, but the direction remains unchanged.
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