Modeling of German Low Voltage Cables with Ground Return Path

Johanna Geis-Schroer, Sebastian Hubschneider, Lukas Held, Frederik Gielnik, Michael Armbruster, Michael Suriyah and Thomas Leibfried
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Johanna Geis-Schroer: Institute of Electrical Energy Systems and High-Voltage Technology (IEH), Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany
Sebastian Hubschneider: Institute of Electrical Energy Systems and High-Voltage Technology (IEH), Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany
Lukas Held: Institute of Electrical Energy Systems and High-Voltage Technology (IEH), Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany
Frederik Gielnik: Institute of Electrical Energy Systems and High-Voltage Technology (IEH), Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany
Michael Armbruster: Stadtwerke Buehl GmbH, 77815 Buehl, Germany
Michael Suriyah: Institute of Electrical Energy Systems and High-Voltage Technology (IEH), Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany
Thomas Leibfried: Institute of Electrical Energy Systems and High-Voltage Technology (IEH), Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany

Energies, 2021, vol. 14, issue 5, 1-34

Abstract: In this contribution, measurement data of phase, neutral, and ground currents from real low voltage (LV) feeders in Germany is presented and analyzed. The data obtained is used to review and evaluate common modeling approaches for LV systems. An alternative modeling approach for detailed cable and ground modeling, which allows for the consideration of typical German LV earthing conditions and asymmetrical cable design, is proposed. Further, analytical calculation methods for model parameters are described and compared to laboratory measurement results of real LV cables. The models are then evaluated in terms of parameter sensitivity and parameter relevance, focusing on the influence of conventionally performed simplifications, such as neglecting house junction cables, shunt admittances, or temperature dependencies. By comparing measurement data from a real LV feeder to simulation results, the proposed modeling approach is validated.

Keywords: distribution systems; multiphase and unbalanced analysis; low voltage grids; low voltage cable; ground return path; asymmetric modeling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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