Design of hydrid harmonics Power filters for non-linear load: Case study: Imana steel Rwanda

Abstract

Due to the fact that today's power systems are increasingly based on the use of power electronics, harmonics are one of the frequent problems that have an impact on the network's ability to improve power quality in industrial power systems. These problems typically have an impact on the performance of electrical equipment like transformers, electrical machines, and electronic equipment. Therefore, some steps must be made to mitigate such problems that may lead to a variety of power quality concerns in the network in order to improve power quality there. This dissertation discusses the design of a hybrid power filter for harmonic compensation caused by nonlinear loads linked to the power system, indicating that more research is required to address this issue. A hybrid harmonic power filter was designed for IMANA Steel Rwanda to reduce the total harmonic distortion brought on by the arc furnace. It combines a shunt passive filter, a shunt active filter, and a nonlinear load used in the system in the form of an electric arc furnace. The total harmonic distortion of the system was determined using a Fast Fourier transfer (FFT) algorithm. This study aimed to analyze the contribution of hybrid harmonics power filters on a power system, analyze the power system behavior with nonlinear loads versus a power system grid and improve power quality by reducing the harmonics (THD) caused by non-linear loads to the recommended value of IEEE 519 -1992 harmonic standards. The suggested topology was simulated using MATLAB/ Simulink software to fulfill the research goal.