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Table 4 Optimized controller parameters and ST and JITAE results of Test-system-3

From: Novel chaos game optimization tuned-fractional-order PID fractional-order PI controller for load–frequency control of interconnected power systems

Algorithm

MGWO: PID [27]

DSA: FOPID [23]

DSA: FOPI–FOPD [23]

CGO: FOPID–FOPI

Controller parameters

Thermal

Thermal

Thermal

Thermal

 

\({K}_{P}=1.7502\)

\({K}_{P}=1.9998\)

\({K}_{P1}=-2.0000\)

\({K}_{P1}=1.9999\)

 

\({K}_{I}=-0.0087\)

\({K}_{I}=2.0000\)

\({K}_{P2}=-2.0000\)

\({K}_{P2}=1.9787\)

 

\({K}_{D}=0.7499\)

\({K}_{D}=1.9999\)

\({K}_{I}=-2.0000\)

\({K}_{I1}=1.9878\)

 

Hydro

\(\lambda =0.5021\)

\({K}_{D}=-2.0000\)

\({K}_{I2}=2.0000\)

 

\({K}_{P}=0.3110\)

\(\mu =0.2386\)

\(\lambda =0.5040\)

\({K}_{D}=1.9715\)

 

\({K}_{I}=0.3102\)

Hydro

\(\mu =0.0100\)

\({\lambda }_{1}=0.3023\)

 

\({K}_{D}=0.0034\)

\({K}_{P}=1.2029\)

Hydro

\({\lambda }_{2}=0.3013\)

 

Gas

\({K}_{I}=1.1908\)

\({K}_{P1}=1.7433\)

\(\mu =1e{-}9\)

 

\({K}_{P}=0.0091\)

\({K}_{D}=-0.4375\)

\({K}_{P2}=-2.0000\)

Hydro

 

\({K}_{I}=1.2409\)

\(\lambda =0.5072\)

\({K}_{I}=-2.0000\)

\({K}_{P1}=2e{-}7\)

 

\({K}_{D}=0.6901\)

\(\mu =0.3748\)

\({K}_{D}=-1.3626\)

\({K}_{P2}=0.1269\)

  

Gas

\(\lambda =0.9506\)

\({K}_{I1}=2.1e{-}8\)

  

\({K}_{P}=0.9272\)

\(\mu =0.0877\)

\({K}_{I2}=1.9642\)

  

\({K}_{I}=2.0000\)

Gas

\({K}_{D}=1.8441\)

  

\({K}_{D}=1.9999\)

\({K}_{P1}=-2.0000\)

\({\lambda }_{1}=0.0061\)

  

\(\lambda =1.2105\)

\({K}_{P2}=-1.7815\)

\({\lambda }_{2}=1.0000\)

  

\(\mu =1.2682\)

\({K}_{I}=-2.0000\)

\(\mu =1.5e{-}6\)

   

\({K}_{D}=-2.0000\)

Gas

   

\(\lambda =0.8692\)

\({K}_{P1}=1.5012\)

   

\(\mu =1.2000\)

\({K}_{P2}=2.0000\)

    

\({K}_{I1}=2.0000\)

    

\({K}_{I2}=2.0000\)

    

\({K}_{D}=1.6228\)

    

\({\lambda }_{1}=1.1267\)

    

\({\lambda }_{2}=1.1e{-}4\)

    

\(\mu =1.3075\)

Ts (s) (2% band)

    

\(\Delta {F}_{1}\)

15.69

8.31

1.81

1.74

\(\Delta {F}_{2}\)

20.05

6.25

4.51

3.53

\(\Delta {P}_{tie}\)

17.82

6.51

3.98

2.86

\({J}_{ITAE}\)

0.9197

1.557

0.0461

0.0259