Comparative performance analysis of hybrid differential evolution and pattern search technique for frequency control of the electric power system

Journal of Electrical Systems and Information Technology

Table 4 Tuned parameters with loading, T_G and T_T conditions

Controller parameters	Loading		T_G		T_T
Controller parameters	+ 25%	− 25%	+ 25%	− 25%	+ 25%	− 25%
K_P1	− 1.9376	− 1.9330	− 1.9353	− 1.9359	− 1.9379	− 1.9348
K_P2	0.5390	0.5407	0.5401	0.5402	0.5404	0.5387
K_P3	− 1.2571	− 1.2587	− 1.2592	− 1.2596	− 1.2582	− 1.2593
K_I1	− 1.9465	− 1.9453	− 1.9474	− 1.9472	− 1.9431	− 1.9432
K_I2	− 1.7111	− 1.7121	− 1.7135	− 1.7131	− 1.7121	− 1.7124
K_I3	− 1.0105	− 1.0103	− 1.0106	− 1.0106	− 1.0108	− 1.0102
K_D1	− 1.5404	− 1.5396	− 1.5408	− 1.5405	− 1.5395	− 1.5398
K_D2	− 0.0663	− 0.0688	− 0.0660	− 0.0660	− 0.0654	− 0.0650
K_D3	− 0.3952	− 0.3967	− 0.3920	− 0.3911	− 0.3923	− 0.3935
λ₁	0.3275	0.3260	0.3296	0.3297	0.3297	0.3292
λ₂	0.8567	0.8535	0.8559	0.8547	0.8567	0.8542
λ₃	0.4773	0.4723	0.4776	0.4783	0.4750	0.4725
μ₁	0.2319	0.2329	0.2334	0.2328	0.2324	0.2337
μ₂	0.0442	0.0459	0.0406	0.0417	0.0405	0.0459
μ₃	0.2455	0.2424	0.2443	0.2440	0.2465	0.2445