Comparative Study of Popular Objective Functions for Damping Power System Oscillations in Multimachine System

Table 2

Best optimized parameters for each objective function using DSA.

Objective functions		𝐾	𝑇1	𝑇2	𝑇3	𝑇4
𝐽1	PSS1	5.1903	1.1099	0.2358	1.6706	1.3299
	PSS2	7.2073	1.1549	1.2313	0.7452	1.5635
	PSS3	6.3461	0.8985	0.5746	0.8453	0.3337
	PSS4	10.7097	0.0906	0.7335	1.4030	1.6083
𝐽2	PSS1	5.0422	0.9573	1.8312	1.6562	0.2857
	PSS2	29.3894	0.2130	1.7013	0.0165	1.9849
	PSS3	21.8602	0.2569	0.1395	1.3798	1.1226
	PSS4	25.9223	0.0634	1.7467	0.9554	0.8587
𝐽3	PSS1	15.0137	1.3111	1.0455	0.4944	0.0597
	PSS2	40.2497	0.2833	1.8740	0.5664	1.9577
	PSS3	31.1375	0.7925	0.9937	0.1303	0.0108
	PSS4	22.8605	0.2659	1.6025	1.0201	1.6150
𝐽4	PSS1	25.5890	1.3868	0.9446	0.0788	0.7359
	PSS2	3.10292	0.7043	0.7753	1.3975	0.1023
	PSS3	12.5965	0.0191	0.5753	1.1611	0.4992
	PSS4	16.5014	0.6357	0.3429	1.0108	0.9893
𝐽5	PSS1	33.794	0.0411	1.9849	0.7937	1.1574
	PSS2	31.8907	0.3248	0.0561	0.3886	1.8845
	PSS3	28.9673	1.1705	0.7381	0.1170	0.0134
	PSS4	35.8091	1.1773	0.8512	0.0769	0.6321