Publikationen - Netze für Erneuerbare Energien

Leonard Schwochow, Sebastian Kersten, (Eberhard Waffenschmidt),
Safe operation of photovoltaic systems in households with safety-plug connection”,
Master-Projekt,TH-Köln, 21. März 2018

Defining the load of a fused string in a household was the aim of this project. This is required for save operation of plug and play socket photovoltaic (PV) systems in the grid of households. The additional power of the PV-system could overload the wiring. First, the standardization of socket PV-systems in Germany is being checked. By measuring the grid impedance, the actual load situation should be indicated.
To do so, different measurement methods are being examined. Grids reaction to a known load is being observed to calculate the grid impedance. Further, the phasor shift between different load situations will be metered to estimate actual loads. The measurements of the grid impedance didn’t really indicate the loads. However promising correlations between voltage cracks, phasor shifts and loads in a string were found.


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> Stecker-PV 

Stromnetz im Haushalt
Illustration zur Überlastung eines Haushalttnetzes durch Plug-In-PV.

E.Waffenschmidt, 26.Mai 2021