Influence of grid-connected solar inverters and mains monitoring systems on the spectral grid impedance
Research output: Contributions to collected editions/works › Article in conference proceedings › Research
Authors
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.
| Original language | English |
|---|---|
| Title of host publication | XII International School on Nonsinusoidal Currents and Compensation |
| Number of pages | 6 |
| Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
| Publication date | 31.07.2015 |
| Pages | 21-26 |
| Article number | 7174687 |
| ISBN (Print) | 978-1-4799-8417-6 |
| ISBN (Electronic) | 978-1-4799-8415-2 |
| DOIs | |
| Publication status | Published - 31.07.2015 |
| Event | International Symposium on Networks, Computers and Communications - ISNCC 2015 - Łagów , Poland Duration: 15.06.2015 → 18.06.2015 http://www.wikicfp.com/cfp/servlet/event.showcfp?eventid=40936©ownerid=62938 |
- Energy research - harmonic distortion, invertors, power grids, power supply quality, power system measurement, solar power stations