Performance Analysis of Conventional and Fuzzy Logic Controlled Automatic Voltage Regulator Systems in a Noisy Environment
Abstract
The increasing demand for electric power is leading to complex interconnected power systems. As a result, generation units are being operated under stressed conditions with smaller stability margins. The power supplied by the generator involves active and reactive components and good control of active and reactive power is essential in order to maintain a satisfactory steady state as these components can disturb the parameters of the power system. To regulate the reactive power and voltage magnitude of generation unit, AVR (Automatic Voltage Regulation) system is used in the forward path of the closed loop system of the generator. The addition of a conventional Proportional Integral and Derivative (PID) controller in the forward path of the AVR system can improve the dynamic response significantly but this may be at the cost of additional noise (introduced by the derivative component) which may reduce the overall effectiveness of the controller and this is a matter of concern in practice.