Abstract:
Fuzzy Gain Scheduling controller in load
frequency control of three area electric power system
is proposed in this paper. The three area
interconnected thermal power plant is analyzed in this
article. With the growth of power system capacity and
size, it is often observed that huge tie-line power
divergence and continued power fluctuation under
sudden system load changes result in instability.
Traditional PI controller is analyzed for stability by
many researchers in load frequency control, but it
does not satisfy the stability of the system. It demands
the proposal of advanced PI controllers like Antiwindup
PI and Fuzzy Gain Scheduling controller. The
principle of the Anti-windup PI controller is based on
avoiding the unwanted Windup phenomenon of
Proportional Integral controller. The working of the
Fuzzy Gain Scheduling controller is based on the auto
tuning of gains of the Proportional Integral controller.
The performance of traditional PI controller and
proposed controllers are compared under small step
disturbance using MATLAB / Simulink. Impacts of
load disturbance on tie line power and frequency are
analyzed.
