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 5 Tuned parameters with T_RH, T_CD and T₁₂ conditions

Controller parameters	T_RH		T_CD		T₁₂
Controller parameters	+ 25%	− 25%	+ 25%	− 25%	+ 25%	− 25%
K_P1	− 1.9376	− 1.9317	− 1.9347	− 1.9336	− 1.9315	− 1.9325
K_P2	0.5383	0.5388	0.5393	0.5400	0.5396	0.5384
K_P3	− 1.2565	− 1.2566	− 1.2578	− 1.2577	− 1.2573	− 1.2568
K_I1	− 1.9430	− 1.9437	− 1.9466	− 1.9470	− 1.9431	− 1.9429
K_I2	− 1.7133	− 1.7136	− 1.7129	− 1.7156	− 1.7123	− 1.7121
K_I3	− 1.0108	− 1.0105	− 1.0107	− 1.0102	− 1.0108	− 1.0101
K_D1	− 1.5406	− 1.5401	− 1.5402	− 1.5407	− 1.5404	− 1.5404
K_D2	− 0.0620	− 0.0685	− 0.0618	− 0.0694	− 0.0652	− 0.0638
K_D3	− 0.3942	− 0.3951	− 0.3924	− 0.3951	− 0.3983	− 0.3953
λ₁	0.3257	0.3294	0.3274	0.3289	0.3219	0.3272
λ₂	0.8543	0.8561	0.8548	0.8557	0.8570	0.8550
λ₃	0.4763	0.4787	0.4722	0.4722	0.4769	0.4753
μ₁	0.2329	0.2317	0.2320	0.2316	0.2327	0.2323
μ₂	0.0418	0.0441	0.0437	0.0425	0.0412	0.0408
μ₃	0.2445	0.2433	0.2425	0.2470	0.2458	0.2449