Question

What is Meant by Dynamic Stability?

Answer 1

1. Dynamic stability can be defined as a system's ability to revert to a steady-state of operation after experiencing specific perturbations.
2. In general, different systems or characteristics may influence the notion of dynamic stability.
3. Dynamic stability can also be defined as the energy balance between the power that is supplied and the power that is consumed at a given moment.
4. A system that remains constant and doesn't change with respect to time is a stable system.
5. The dynamic stability of a system can be classified as :
   5.1 Positive dynamic stability: Stability response in which the system returns to its original position after the disturbance, the oscillations dampened over time
   5.2 Neutral dynamic stability: Stability response in which the system does not returns to its original position after the disturbance, the oscillations do not dampen over time
   5.3 Negative dynamic stability: The oscillations get worse over time.