Desain Kompensator Berbasis Analisa Root Locus Sebagai Pengendali Tegangan Pada Sistem Pembangkit Tenaga Listrik

Abstract

Abstract — Electric power generation systems require an effective voltage control system to maintain generator voltage stability and provide an appropriate response to input changes. An improperly controlled system may exhibit a relatively slow response and significant deviation from the desired reference. This study aims to analyze the voltage response characteristics of a generator and design a Lead compensator based on Root Locus analysis to improve the performance of the voltage control system. The research method consists of modeling the system using transfer functions, analyzing system stability using the Root Locus method, evaluating the open-loop and closed-loop responses, and designing a Lead compensator. The simulation results show that the open-loop system has a Rise Time of 2.361 seconds and a Settling Time of 4.3201 seconds with a Maximum Overshoot of 0%. After applying the closed-loop configuration, the Rise Time decreases to 0.22466 seconds and the Settling Time decreases to 2.9534 seconds, but the system produces a Maximum Overshoot of 46.979%. After applying the Lead compensator, the Rise Time decreases to 0.19496 seconds, the Peak Time is 0.46823 seconds, the Settling Time decreases to 1.0935 seconds, and the Maximum Overshoot decreases to 23.815%. These results indicate that the Lead compensator can improve response speed and system stability.