A New Approach to Include Complex Grounding System in Lightning Transient Studies and EMI Evaluations
Journal article, Peer reviewed
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Original versionSteinsland, V., Sivertsen, L. H., Cimpan, E., & Zhang, S. (2019). A new approach to include complex grounding system in lightning transient studies and emi evaluations. Energies, 12(16). 10.3390/en12163142
A new approach to lightning transient studies including complex grounding grids is presented in this paper. The grounding system is modeled in Matlab/Simulink based on the transmission line theory. Using a bottom-up approach and considering the properties of the fundamental elements, a detailed view of measurement values will be presented and analyzed. The Matlab/Simulink grounding system models are interfaced for co-simulation with EMTP-RV trough Functional Mock-up Interface (FMI) 2.0. This modeling approach allows the use of the full component library and network design by EMTP-RV to evaluate and analyze the effects of the grounding system and transmission network simultaneously in Matlab/Simulink. The results present a simplified transmission system where a surge is injected, Conseil International des Grands Réseaux Électriques (CIGRE) 1 kA 1.2/50, in far-end of a transmission line. When reaching a substation, the surge is injected into the grounding system through a surge arrester.