This production line utilizes medium-voltage variable frequency drives with Active Front End (AFE) technology to minimize harmonics at the 5th and 7th current harmonics compared to traditional variable frequency drives when operating at high power. However, these drives are also generating voltage harmonic at higher frequencies when in no-load mode. These voltage harmonics at higher frequencies pose a significant risk to devices directly connected to the power grid, potentially causing resonance within the system and voltage fluctuations leading to equipment failures. The danger escalates as these voltage harmonic peaks at the 35kV level, a voltage level interconnecting multiple factories in the complex. To ensure power quality and operational safety for the entire system, the installation of a harmonic filtering system to mitigate these harmonics at the source is necessary and critical.