Utilization of Inverter Operating Point Shifts as a Quality Assessment Tool for Photovoltaic Systems
Dalsaß M, Schmitt P, Buerhop C, Luchscheider P, Hauch J, Brabec C, Camus C (2018)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2018
Journal
Book Volume: 8
Pages Range: 315-321
Journal Issue: 1
URI: http://ieeexplore.ieee.org/document/8219380/
DOI: 10.1109/JPHOTOV.2017.2775443
Abstract
This paper presents a novel approach for the automated
identification of electrically impaired strings in photovoltaic
(PV) systems, which is solely based on monitored inverter data. By
shifting the inverter operating points of two or more strings to
a common voltage level on the direct current side, the effect of
defects such as bypassed substrings is actively amplified so that defects
can be detected reliably. The presented Common Voltage Test
is illustrated using an electrical simulation based on the extended
two-diode model. The effectiveness of the proposed approach is
demonstrated using real monitoring data of an inverter in a PV
power plant in Bavaria, Germany. For validation, electrically defective
PVmodules within the PV system are identified and located
using aerial infrared thermography. Facilitating an automated reliable
detection of faulty strings in PV systems, the approach is
especially useful for large-scale PV power plants since only the
faulty strings need to be examined in greater detail. Consequently,
the maintenance becomes more efficient so that the maintenance
costs may be reduced significantly.
Authors with CRIS profile
Manuel Dalsaß
Institute Materials for Electronics and Energy Technology (i-MEET)
Christoph Brabec
Institute Materials for Electronics and Energy Technology (i-MEET)
Involved external institutions
Germany (DE)How to cite
APA:
Dalsaß, M., Schmitt, P., Buerhop, C., Luchscheider, P., Hauch, J., Brabec, C., & Camus, C. (2018). Utilization of Inverter Operating Point Shifts as a Quality Assessment Tool for Photovoltaic Systems. IEEE Photonics Journal, 8(1), 315-321. https://dx.doi.org/10.1109/JPHOTOV.2017.2775443
MLA:
Dalsaß, Manuel, et al. "Utilization of Inverter Operating Point Shifts as a Quality Assessment Tool for Photovoltaic Systems." IEEE Photonics Journal 8.1 (2018): 315-321.
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