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Fault Detection, Classification and Localization Algorithm for Photovoltaic Array
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DOI：10.1109/TEC.2021.3062049.png)
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Abstract
En 中文
In this study, analysis of photovoltaic (PV) string currents is performed to understand the behavior of the PV array under faults. The whole analysis is summed up in just two simple statements, and an algorithm is devised on the basis of these statements. The proposed algorithm can detect, classify and localize line-to-ground (L-G) & line-to-line (L-L) faults in the PV array. The proposed method can detect faults of any mismatch level and size of the PV array by using only one current sensor per string. It is also capable of working with finite fault-resistance as well as in the presence/absence of blocking diodes. To check the accuracy of the algorithm, it has been thoroughly tested through experimental setup.
Keywords:
Circuit faults
Voltage measurement
Fault detection
Location awareness
Sensors
Sensor arrays
Resistance
Fault classification
fault detection
fault impedance
fault localization
l-g fault
l-l fault
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