Journal
IEEE JOURNAL OF PHOTOVOLTAICS
Volume 11, Issue 4, Pages 1097-1104Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2021.3081437
Keywords
Frequency modulation; Attenuation; Power cables; Solar power generation; Photovoltaic systems; Signal resolution; Location awareness; Fault detection; photovoltaics (PVs); soft faults; spread spectrum time domain reflectometry (SSTDR); transmission lines
Funding
- U.S. Department of Energy's under Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technologies Office (SETO) [DE-EE0008169]
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This article explores the possibility of using spread spectrum time domain reflectometry (SSTDR) for detecting disconnections in a large-scale photovoltaic (PV) array, finding that the technology is effective under specific system parameters.
In this article, 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.
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