Fuzzy logic based multi-functional load frequency control

Load frequency control (LFC) is a very important component in power system operation and control for supplying sufficient and reliable electric power with high quality. To ensure satisfactory area frequency and inter-area tie-line power is one of the main requirements for the LFC. This paper presents a multi-functional fuzzy logic based tie-line bias control (TBC) scheme considering the MWh constraint for the power transmission on the tie-line and the regulation margin. In addition, the real power flow constraint on each trunk line is also taken into account. A detailed nonlinear LFC simulator has been developed in the Matlab/Simulink environment. Simulation results demonstrate the efficiency of both the proposed control scheme and the simulator performance.