Arc fault detection method for photovoltaic system based on adaptive kernel function and instantaneous frequency estimation

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United States of America Patent

PATENT NO 11489490
APP PUB NO 20210036656A1
SERIAL NO

16629033

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An arc fault detection method for a photovoltaic system based on an adaptive kernel function and instantaneous frequency estimation includes steps of: sampling signal xt in a time window length of TNCT and obtaining an iterative time-frequency diagram of xt by nonlinear chirplet transform; extracting detection variables based on frequency component in the selected iterative time-frequency diagram to determine a moment when spectrum energy increases; when the moment is found, obtaining a matrix distribution form of the xt in time-frequency domain obtained by the adaptive optimum kernel time-frequency representation, and processing the matrix with sum of squares in a time dimension to obtain a column vector; processing each selected frequency bands with integration operation in a frequency dimension to obtain multiple detection variable values as inputs of a well-trained Naive Bayes model.

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Patent OwnerAddress
XI'AN JIAOTONG UNIVERSITY710049 NO 28 XIANNING ROAD XI'AN SHAANXI XI'AN CITY SHAANXI PROVINCE 710049

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Silei Shaanxi, CN 1 0
Li, Xingwen Shaanxi, CN 12 8
Meng, Yu Shaanxi, CN 25 148

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