(in lingua inglese)
In this paper, a novel fuzzy PID with derivative filter controller has been proposed for Load Frequency Control (LFC) of an interconnected power system with multi-source power generation in deregulated environment. The study has been conducted on a two area six unit power systems interconnected via parallel AC/DC transmission links. Physical constraints such as Time Delay (TD) and Generation Rate Constrain ) are considered in the system model in order to make the system more realistic and demonstrate the ability of the proposed approach to handle nonlinearity in the system model.