Akademik Veri Yönetim Sistemi
IEEE Access, cilt.14, ss.46170-46177, 2026 (SCI-Expanded, Scopus)
Methods for establishing Medium-voltage (MV) grounding systems, which can be dangerous and costly, are typically based on traditional practices or on unscientific assumptions (e.g., fixed 10–20 meter intervals). Consequently, these methods fail to consider the geometry of conductors and high load currents which can lead to unsafe touch voltages and excessive installation costs. This research establishes a scientifically based method, grounded in the laws of physics and compliant with IEC 60364, for determining grounding connection intervals, and determines the electromagnetic coupling between phase conductors and metal enclosures using measured mutual inductance data and COMSOL Multiphysics simulations. This approach of has enabled the determination of the induced voltage gradients associated with MV busbar connection systems across various current levels (up to 5000 amps) and voltage classes (12-24 kV). Therefore, this research has provided an understanding of the physical characteristics that govern grounding system connections. The results indicate that the maximum safe grounding distances (Lmax), found to range from 120.3 m for 950 A systems to 33.5 m for high-capacity 5000 A systems, depend strongly on system design parameters. The sensitivity analysis indicates that Lmax is most influenced by fluctuations in load current and geometric clearances, and therefore provides practical guidance for incorporating strategic safety multipliers (0.8 and 0.6) into engineering applications. Additionally, this study provides a scalable framework to ensure that all grounding system designs meet the 50 V safety standard while minimizing over-engineering. In addition, this study enables the application of experimental or experience-based knowledge to the design of modern electrical infrastructure, going beyond simple estimates and providing a scientific framework for grounding system designs.