15 Questions
What happens if one or more of the generators lose synchronism following a disturbance?
No net power can be transferred between the machines
When is a system said to be transiently unstable?
Following a disturbance, one or more of the generators lose synchronism
What is the primary requirement for all generators to operate as an interconnected system?
The rotors must turn at exactly the same speed
What type of models need to be developed in order to study the transient response of a power system?
Both electrical and mechanical models for the generators
In the generator mechanical model, what does 'J' represent?
Moment of inertia of turbine & rotor
What is the primary consequence of a loss of synchronism in an interconnected power system?
Net power transfer between machines becomes impossible
Which model treats the generator as a voltage source behind the direct-axis transient reactance with a fixed voltage magnitude but changing angle according to the mechanical dynamics?
Classical model
In which time frame following a system disturbance do we need to develop models for the generator's transient response?
Seconds
What does 'J' represent in the generator mechanical model?
Moment of inertia of turbine & rotor
What is the requirement for all generators to remain in synchronism in an interconnected power system?
Same speed
What is the consequence of a loss of synchronism in an interconnected power system?
The power flow between machines becomes unidirectional
What is the equivalent electrical torque in the generator mechanical model?
Torque due to electrical dynamics
What does the classical model of the generator consider it as?
Voltage source behind the direct-axis transient reactance
What is the primary focus of studying the transient response of a power system?
To understand system behavior following disturbances
What is the moment of inertia 'J' in the generator mechanical model?
Angular acceleration of the rotor
Test your knowledge of transient analysis, stability, and control in power systems. Understand the importance of synchronous operation and the effects of loss of synchronism on power transfer.
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