ABSTRACT

Paulus Mangera, An Optimum Design of Proportional-Integral-Derivative (PID) Controller for the Automatic Control Regulator (AVR) System (supervised by Nadjamuddin Harun and Rhiza S. Sadjad).

This is a design project to develop an optimum Proportional-Integral-Derivative (PID) controller for the Automatic Control Regulator (AVR) system of a 45 MVA, 11.5 kV electric power generator manufactured by General Electric at the  state-owned power plant PLTG Tello, Makassar, South Sulawesi, INDONESIA.

The numerical (SIMULINK) model of the actual generator is developed based on the generalized and simplified linear model of generator, then a simulation of an output voltage disturbance due to an inductive load variation is applied. 

The Routh criteria of stability provides the critical proportional gain Kcr of 0.02689. Then, the optimum design of the PID controller is calculated using Ziegler-Nichols method, to obtain the proportional gain Kp of 0.0161354, the integral gain Ki of 0.01815 and the derivative gain Kd of 0.00359. The regulation is improved to reduce the 0.3 p.u. of voltage disturbance up to 0.012473 p.u.