Performance Evaluation of Antlion Optimizer Based Regulator in Automatic Generation Control of Interconnected Power System

Table 2

Eigenvalues and minimum damping ratio.

Parameter	ALO		GSA [17]		PSO [18]		GA [19]
	System modes	−5.8548	−5.9604	−5.8468	−5.976	−5.846	−6.5657	−5.6586	−5.808
−4.2219		−4.4165	−4.313	−4.4257	−4.4443	−4.8155	−4.2083	−4.2168
−0.3805 ± 1.7191		−0.2885 ± 1.8854	−0.3994 ± 1.7029	0.2511 ± 1.9124	−0.4010 ± 1.7004i	−0.0030 ± 2.6953	−0.4925 ± 1.3799	−0.2024 ± 1.6817
−0.3007 ± 1.4854		−0.2088 ± 1.7320	−0.2606 ± 1.6066	−0.1924 ± 1.7420	−0.2406 ± 1.7718i	−0.0220 ± 2.1889	−0.2491 ± 1.4729	0.0361 ± 1.5786i
−0.3716		−0.4624	−0.3395	−0.5169	−0.0983 ± 0.0157i	−0.4666	−0.1353	−0.1058
−0.1179		−0.0910	−0.1102	−0.0884	−0.3521	−0.0494	−0.3294	−0.7991
−0.2256		−0.2351	−0.2061	−0.2416		−0.2144	−0.3712	−0.9209
Minimum damping ratio	0.1984	0.1197	0.1601	0.1098	0.1345	0.0011	0.1668	0.0229