Improving The Stability of Sulselrabar System with Dual Input Power System Stabilizer Based on Imperialist Competitive Algorithm

Disturbances in the form of electrical power oscillations are generally overcome using additional equipment such as the Conventional Power System Stabilizer (PSS). The PSS will increase the stability limit by providing damping for the generator oscillation. PSS damping means that PSS will produce an electrical torque component that is in phase with the change in speed. However, the use of PSS has many errors, namely the desired value is different from the measured value of the PSS output. This is due to shaft motion components such as lateral shaft run out or torsional oscillations. In this research, Dual Input Power System Stabilizer (DIPSS) equipment is used to reduce signal noise so that the system remains stable. With optimal DIPSS parameters, optimal system performance is obtained. In this study, a case study of the additional load on the Barru generator is used. From the test results, system performance has increased with the installation of DIPSS ICA. The increase in system performance can be seen from the speed and angle response of the generator rotor, which results in minimum overshoot oscillations and fast settling time when disturbances occur. In addition, the increase in system performance is also seen from the negative system eigenvalues.