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Table 3 Optimized controller parameters and ST and JITAE results of Test-system-2

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

Algorithm

ISFS: PID [1]

DSA: FOPID [23]

DSA: FOPI–FOPD [23]

CGO: FOPID–FOPI

Controller parameters

\({K}_{P}=0.3898\)

\({K}_{P}=2.5578\)

\({K}_{P1}=2.3181\)

\({K}_{P1}= 2.3126\)

 

\({K}_{I}=1.0113\)

\({K}_{I}=2.9999\)

\({K}_{P2}=2.9999\)

\({K}_{P2}=1.6944\)

 

\({K}_{D}= 0.7695\)

\({K}_{D}=0.7937\)

\({K}_{I}=2.9879\)

\({K}_{I1}=2.9913\)

  

\(\lambda =1.0020\)

\({K}_{D}=0.4391\)

\({K}_{I2}=2.6311\)

  

\(\mu =1.2510\)

\(\lambda =1.0000\)

\({K}_{D}=0.6339\)

   

\(\mu =1.4642\)

\({\lambda }_{1}=1e{-}8\)

    

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

    

\(\mu =1.5000\)

ST (s) (2% band)

    

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

6.25

2.34

1.22

1.708

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

\(6.48\)

3.63

2.25

1.95

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

\(4.40\)

2.33

1.05

0.84

\({J}_{ITAE}\)

n/a

0.0121

0.0034

0.0028