Automatic generation control in power plant using PID, PSS and Fuzzy-PID controller

This paper is proposed to show the interaction between the LFC and the AVR loops in the Power Plant. The combinational effects of these two LFC and AVR loops are studied by extending the linear zed AGC system. A complete system model for LFC with Speed Governor, Turbine, Integral controller and Power System and AVR with Excitation System and PID controllers are described. LFC is for regulation of system frequency. It is also called a power factor control loop and influence the active power balances in the power system network. The LFC is achieved by the speed-governor mechanism. The basic principle of the speed-governor mechanism is to adjust itself as per the load variations. The voltage of the generator is proportional to the speed and excitation of the generator. If the speed is kept at constant, then the excitation system is used to control the voltage. The voltage control is also called as an excitation control system. This combined model is tested with conventional PID Controller, PID with Power System Stabilizer and Fuzzy-PID with Power System Stabilizer. The results are shown by using simulation; this will be reachable in dynamic and steady state responses.