Designing a GA-Based Robust Controller For Load Frequency Control (LFC)

  • K. Soleimani Electrical and Computer Engineering Department, Isfahan University of Technology, Isfahan, Iran
  • J. Mazloum Electrical Engineering Department, Shahid Sattari Aeronautical University of Science and Technology, Tehran, Iran
Keywords: load frequency control, LFC, drop characteristics


Power systems include multiple units linked together to produce constantly moving electric power flux. Stability is very important in power systems, so controller systems should be implemented in power plants to ensure power system stability either in normal conditions or after the events of unwanted inputs and disorder. Frequency and active power control are more important regarding stability. Our effort focused on designing and implementing robust PID and PI controllers based on genetic algorithm by changing the reference of generating units for faster damping of frequency oscillations. Implementation results are examined on two-area power system in the ideally state and in the case of parameter deviation. According to the results, the proposed controllers are resistant to deviation of power system parameters and governor uncertainties.


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