Influence of grid-connected solar inverters and mains monitoring systems on the spectral grid impedance

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschung


The impact of harmonic distortion on the power quality, caused by solar inverters, is strongly affected by the spectral characteristic of the grid impedance at the point of common coupling (PCC). The grid impedance at a PCC can be modelled as a parallel connection of the equivalent impedances of the grid structure and the solar inverter system. Yet, it is challenging to determine the exact frequency characteristics of these parameters. It requires detailed spectral models, which are often not available especially for the grid. In this contribution, both parameters are measured and evaluated in the frequency range from DC up to 20 kHz. In order to analyse the impact, the impedance is measured on a test grid structure and a PCC. In particular, this paper analyses the influence of the number of parallel-connected inverters as well as the operation point and the integrated mains monitoring system on the resulting spectral grid impedance.
TitelXII International School on Nonsinusoidal Currents and Compensation
Anzahl der Seiten6
VerlagIEEE - Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)978-1-4799-8417-6
ISBN (elektronisch)978-1-4799-8415-2
PublikationsstatusErschienen - 31.07.2015
VeranstaltungInternational Symposium on Networks, Computers and Communications - ISNCC 2015 - Łagów , Polen
Dauer: 15.06.201518.06.2015

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  • EnERgioN - Erzeugung, Speicherung und Vermarktung von erneuerbaren Energien in der Region Nord (Kompetenztandem-Projekt)

    Projekt: Forschung