Data mining techniques for novel local reference solar irradiance spectra calculations: A case study in Beijing

Yifan Zhao,Peng Xue,Cheng Fan,Bojia Li,Nan Zhang,Tao Ma,Jingchao Xie,Jiaping Liu

Solar Energy（2023）

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摘要

•Spectrally resolved DNI was tested for an entire year in Beijing.•The spectra can be represented in five-dimensional data by an autoencoder.•Hierarchical clustering was adopted to obtain ten reference spectra in the case.•Novel local reference spectra can characterize solar resources throughout the year.•The superiority of the new reference spectra over ASTM AM1.5D was verified.

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关键词

Solar spectral irradiance, Reference spectra, Direct normal irradiance, Agglomerative hierarchical clustering, Average photon energy

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