A Measurement-based Aggregated Simulation Model of Residential LV networks for Harmonic Resonance Studies

Abstract

Harmonic resonance is increasingly observed in many European residential low-voltage networks, which can cause increased harmonic disturbance levels. An aggregated simulation model can be used to analyze the resonance phenomenon. Various literature has developed different frequency-domain aggregated representations of LV networks. But they are not realistic for harmonic resonance studies. To bridge this gap, a simulation model derived based on measurements aggregated at the low-voltage busbar of the supply transformer is proposed. The innovation proposed in this model includes an equivalent impedance circuit to represent the aggregated residential customer and background harmonic voltages obtained based on extensive field measurement campaign. The model is validated for its representativeness in harmonic resonance studies. An application example is provided to highlight the usefulness of the proposed model.