An AI based method is proposed in [68] to locate the source of forced oscillation.
However, in the case of resonance when frequency of forced oscillations is close to that of system modes, mode shape estimation may not be useful to locate the source of forced oscillations.
In [41], after visually detecting oscillations, Prony analysis is applied to extract the oscillations' characteristic (i.e. frequency, Magnitude, Phase and Damping ratio) and consequently damping torque of the generator is used to locate the source of forced oscillations.
It is important to locate the sources of forced oscillations because once their sources are identified, the forced oscillations can be mitigated by removing the sources.
Different types of disturbance conditions and the sources of forcing were mentioned above.
In order to suppress forced oscillations and mitigate their impacts, a robust method for locating the sources of forced oscillations is needed.
6) Combination of coherence and self-coherence for a system to monitor the propagation of the information on oscillation and to locate the sources of forced oscillations.
In addition, in the recent years, GCEs such as PSS and automatic voltage regulators (AVR) are reported more often as the sources of forced oscillations.
It can be concluded that in a large power system, GCEs (such as PSS and AVR) are often reported as the sources of forced oscillations in recent years.
It can be observed that both cyclic load and generator control equipment (GCE) were reported as the sources of forced oscillations.
