Journal Homepage: www.ijcst.org

Abstract – This work presents two method for designing the parameters of PID controller, the first is Bacterial Foraging Optimization (BFO) algorithm, and the second is Ziegler method for tuning the parameters of PID controller of Load Frequency Control (LFC) and Automatic Voltage Regulator (AVR) for single area interconnected power system, The proposed controller is used to tune the LFC and AVR.The LFC loop controls real power &frequency and AVR loop controls reactive power & voltage. To maintain the system parameters of the given system at nominal value, PID tuning by BFO and Ziegler is proposed. This paper is proposed to show the interaction between the LFC and the AVR loops. The system with its control method is going to implement in MATLAB software. The interaction between frequency deviation and voltage deviation is analyzed in this paper. System performance has been evaluated at various loading disturbances. This paper describes the design, implementation and operation performance of PID controller as part of the combined loop of AGC & AVR for single area power system