ABSTRACT
The dynamic performance of power system under an internal or external transient perturbation is influenced by the dynamic bus impedance and the control loop gain. Key performance attributes emerging from the dynamic study are the bus voltage ripples, transient deviations, fault and fuse blow transients, and the control loop stability under harmonic ripple excitation. On the other hand, the static performance under a slow change or after the dynamic response has settled in time is largely influenced by the static impedance of the bus. The voltage regulation long after a load change is an example of static performance. Since the dynamic and static bus impedances are similarly defined, they are jointly covered in the following section.
