Automatic generation control with fuzzy logic controllers in the power system including SMES units

This study presents a method based on fuzzy logic controllers (FLCs) for automatic generation control (AGC) of power systems including superconducting magnetic energy storage units. The technique is applied to control systems include three areas having two steam turbines and one hydro turbine tied together through power lines. As a consequence of continually load variation, the frequency of the power system changes over time. In conventional studies, frequency transients are minimized by using conventional integral and proportional controllers aiming of secondary control in AGC and zero steady-state error is obtained after sufficient delay time. In this paper, instead of this method, the configurations of FLCs are proposed. The results obtained by using FLCs outperform than those of conventional controllers as settling time and overshoot as shown at simulation. (C) 2004 Elsevier Ltd. All rights reserved.