Forced oscillation case F_5_2 (Back to the homepage)
In this forced oscillation case, the source of oscillations is at generator 79.
System model:
Small signal analysis:
External force:
![Mountain View](source\FO_diagram_5f2.jpg)
Figure 1. Block diagram of the external force
![Mountain View](source\wecc179_2f.jpg)
Figure 2. WECC 179-bus power system
Generator angle oscillations for the case F_5_2 are shown in Fig.3. Many generators across the system have comparable magnitude of oscillations and the magnitude at the source in not the largest one.
![Mountain View](source\Rotor_Angles_5f2.jpg)
Figure 3. Generator angles in the case F_5_2. Blue curve represents the source of oscillation at generator 79. Note that the magnitude of angle oscillation of the source generator is not the largest one.