Mitigasi Distorsi Harmonisa Pada Kereta Argo Dwipangga K1 di PT INKA (PERSERO) Madiun

Abstract

PT INKA (PERSERO) Madiun is a manufacturing company engaged in the railway sector. In order to improve the quality of its products, PT INKA continues to innovate and improve aspects of equipment and quality. This also increases the need for electrical systems in railway transportation. Maintaining power quality is an important consideration as poor power quality can cause operational disruptions, equipment damage, and significant additional costs for electricity users. One of the most common power quality problems is harmonic distortion. Harmonics are phenomena caused by nonlinear electrical loads that act as a source of waveforms at high frequencies that are multiples of the fundamental frequency. Meanwhile, one of PT INKA's products on the SDP of the Argo Dwipangga executive type passenger train is known to have a THD current value above the IEEE 519 standard in 2014. The current values of the R, S, and T phases are 22.19% and 23.16% respectively. and 21.89%. Therefore, the authors conducted research to develop a filter that can be used to reduce harmonic distortion. Based on the results of ETAP software simulations after the application of 5th-order single-tuned passive filters, there are filter design specifications with a capacitor value of 286.9 µF, an inductor of 0.001414013 H, and a resistor value of 0.014 ohms. THD current values are reduced by 8.33%, 9,31%, and 7.15% for the R, S, and T phases.