Design of a Robust Coordinated Power Oscillation Damper for Use with Large-Scale Wind Energy System Connected to a Multimachine Power System

Table 9

The oscillation modes with the coordinated design of POD and PSSs.

Operating scenario	Mode	Eigenvalue	Frequency (Hz)	Damping ratio (%)	Participating generators
1	M1	−2.3677 ± j10.9968	1.750	21.05	WG
	M2	−4.1695 ± j11.5795	1.843	33.88	G3, G4
	M3	−4.2083 ± j2.7386	0.438	83.8	All G
2	M1	−2.4521 ± j11.2703	1.794	21.26	WG
	M2	−4.2521 ± j11.1357	1.772	35.66	G3, G4
	M3	−3.6147 ± j3.6181	0.576	70.68	All G
3	M1	−2.5035 ± j11.2761	1.795	21.67	WG
	M2	−4.6042 ± j10.6739	1.699	39.61	G3, G4
	M3	−2.7855 ± j3.6703	0.584	60.45	All G