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Table 7 Adjustment results based MPT (1st-order sensitivity)

From: A matrix-perturbation-theory-based optimal strategy for small-signal stability analysis of large-scale power grid

State Eigenvalue Damping ratio Frequency (Hz)
Modal 1 −0.1946 ± j6.0854 0.032 1.0322
Modal 2 −0.1794 ± j5.3150 0.033 1.18156
Modal 3 −0.1972 ± j5.6199 0.0351 0.8944