Table 3 Eigenvalues of the study system model with 50% fsc level and 7 m/s wind speed
Modes | Eigenvalue | Frequency (Hz) | Description |
|---|---|---|---|
Mode 1 | − 1790 ± j889 | 141 | Very high frequency |
Mode 2 | − 19.2 ± j568.2 | 90.4 | Super-synchronous |
Mode 3 | 1.6 ± j187.8 | 29.9 | SSR |
Mode 4 | − 0.63 ± j18.8 | 2.86 | Electromechanical |
Mode 5 | − 52.4 ± j7.9 | 1.25 | Torsional mode |
Mode 6 | − 6.41 ± j8.6 | 1.36 | Torsional mode |