Effects of asymmetrically connected PV and battery systems on the node voltages and pen-conductor currents in low-voltage grids

Wagler, Marco; Witzmann, Rolf

doi:10.1049/oap-cired.2017.0315

Cited by 3 publications

(1 citation statement)

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“…The discrepancy between the assumptions during grid planning and present asymmetrical grid reality causes new challenges in grid operation, for example concerning voltage quality according to European standard DIN EN 50160 or neutral conductor ampacity [4]. In order to evaluate these issues and develop potential solutions, there is a growing interest in detailed modeling of distribution grids, used for integration studies, stability studies and real-time simulation environments.…”

Section: Introductionmentioning

confidence: 99%

Modeling of German Low Voltage Cables with Ground Return Path

et al. 2021

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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.

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Section: Introductionmentioning

confidence: 99%