Detection and Localization of Disconnections in a Large-Scale String of Photovoltaics Using SSTDR

In this paper, we explore the possibility of using spread spectrum time domain reflectometry (SSTDR) for detecting disconnections in a large-scale photovoltaic (PV) array. We discuss the importance, role, and trade-offs of SSTDR resolution, frequency, and attenuation in detecting disconnects in the...

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Bibliographic Details
Published inIEEE journal of photovoltaics Vol. 11; no. 4
Main Authors Edun, Ayobami S., Kingston, Samuel, LaFlamme, Cody, Benoit, Evan, Scarpulla, Michael A., Furse, Cynthia M., Harley, Joel B.
Format Journal Article
LanguageEnglish
Published United States IEEE 02.06.2021
Subjects
Fault detection
photovoltaics (PVs)
soft faults
SOLAR ENERGY
spread spectrum time domain reflectometry (SSTDR)
transmission lines
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Summary:In this paper, we explore the possibility of using spread spectrum time domain reflectometry (SSTDR) for detecting disconnections in a large-scale photovoltaic (PV) array. We discuss the importance, role, and trade-offs of SSTDR resolution, frequency, and attenuation in detecting disconnects in the system. Our results show that if the proper system parameters are chosen, disconnections can be detected in a 1-kV system consisting of twenty-six 60-cell PV panels and located within 1.52 m for the first 22 modules.
Bibliography:EE0008169
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
ISSN:2156-3381
2156-3403