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- W2942885925 abstract "Photovoltaic (PV) power generation systems work chronically in various climatic outdoor conditions, therefore, faults may occur within the PV arrays in PV systems. Online fault detection for the PV arrays are important to improve the system’s reliability, safety and efficiency. In view of this, a fault-detection method based on voltage and current observation and evaluation is presented in this paper to detect common PV array faults, such as open-circuit, short-circuit, degradation and shading faults. In order to develop this detection method, fault characteristic quantities (e.g., the open-circuit voltage, short-circuit current, voltage and current at the maximum power point (MPP) of the PV array) are identified first to define the voltage and current indicators; then, the fault-detection thresholds are defined by utilizing voltage and current indicators according to the characteristic information of various faults; finally, voltage and current indicators evaluated at real-time voltage and current data are compared with the corresponding thresholds to detect potential faults and fault types. The performances of the proposed method are simulated verifying by setting eight different fault patterns in the PV array. Simulation experimental results show the effectiveness of the proposed method, especially the capacities of distinguishing the degradation faults, partial shading faults and variable shading faults." @default.
- W2942885925 created "2019-05-09" @default.
- W2942885925 creator A5006092337 @default.
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- W2942885925 date "2019-05-06" @default.
- W2942885925 modified "2023-10-18" @default.
- W2942885925 title "A Fault Detection Method for Photovoltaic Systems Based on Voltage and Current Observation and Evaluation" @default.
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- W2942885925 doi "https://doi.org/10.3390/en12091712" @default.
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