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A New Method to Design of PID Controller for Load Frequency Control of Hydro Power Plant based Total Cost Function

Author Affiliations

  • 1Department of Electrical Engineering, Islamic Azad University, Parsian Branch, Parsian, IRAN
  • 2 Centre of Excellence for Power System Automation and Operation, Department of Electrical Engineering, Iran University of Science and Technology, Tehran, IRAN

Res. J. Recent Sci., Volume 4, Issue (12), Pages 88-94, December,2 (2015)


This paper presents a novel approach to design of PID controller of Load Frequency Control (LFC) in hydro power plant by selection of PID parameters with a new method. In the conventional power systems the automatic generation control (AGC) of hydro power plants has widely used in frequency control due to having the fast response and high capability for supplying the network against to large demand variation or following disturbance. So, it is important to best performance of frequency control section in hydro power plants. In the suggested method to conducting the simulation, the total cost function is considered which included the time domain characteristics, frequency domain characteristics and Integral of Absolute Error (IAE). Consequently to selection of PID parameters, the Particle Swarm Optimization (PSO) has successfully employed due to finding the global optimum PID parameters based total cost function. Finally, the response of LFC with PID controller based this method is compared with response of LFC without PID controller and with other methods in frequency control of hydro power plant such as transient droop compensation


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