Abstract:
An important problem is the Automatic Load Frequency Control (ALFC) which is directly related to interconnection in power systems. Other problems related to such interconnection like the Automatic Voltage Regulation (AVR) have less interaction in operation with ALFC. As the demand of electrical power is increasing and becoming a global issue, the need of interconnecting power systems is growing up; this growth represents a great challenge for power engineers, in making power systems reliable, economic and safe for both supplier and customers.

Keywords: Power System, Automatic Load Frequency Control, Automatic Voltage Regulation, Fuzzy Logic Controller (FLC)