Load Frequency Control of Thermal Power System by using Extended PI & FLC

Abstract

The Automatic Generation Control (AGC) of interconnected reheat thermal systems employing Proportional- Integral (PI) and extended Proportional- Integral (extended PI) and Fuzzy Logic Controllers is described in this study (FLC). In the past, the extended PI controller was utilised to reduce peak overshoot and settling time inaccuracy. Even with the consideration of non-linearity Generation Rate Constraint, the action of this controller gives satisfactory operation when compared to the PI scheme (GRC). The fading factor plays a big role in this extended PI controller. The fading factor value should be carefully set, as it has a significant impact on control performance. In order to avoid this flaw, the system employs a Fuzzy Logic Controller. In the presence of a Generation Rate Constraint (GRC), the performance of FLC was compared to that of PI and extended PI control. The performance of the system is evaluated with a 1% step load perturbation in each direction.