Research Article
Design of a Robust Coordinated Power Oscillation Damper for Use with Large-Scale Wind Energy System Connected to a Multimachine Power System
Table 4
Critical oscillation modes considering the PSSs only.
| Operating scenario | Mode | Eigenvalue | Frequency (Hz) | Damping ratio (%) | Participating generators |
| 1 | M1 | −0.5917 ± j12.7268 | 2.026 | 4.64 | WG | M2 | −1.9960 ± j8.7160 | 1.387 | 22.32 | G3, G4 | M3 | −0.9419 ± j4.8489 | 0.772 | 19.07 | All G |
| 2 | M1 | −0.5165 ± j12.7373 | 2.027 | 4.05 | WG | M2 | −2.2823 ± j8.3930 | 1.336 | 26.24 | G3, G4 | M3 | −0.6929 ± j4.2338 | 0.674 | 16.15 | All G |
| 3 | M1 | −0.5162 ± j12.7368 | 2.027 | 4.05 | WG | M2 | −2.3802 ± j7.9815 | 1.270 | 28.58 | G3, G4 | M3 | −0.3196 ± j3.2528 | 0.518 | 9.77 | All G |
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