Dust Deposition Impact on Power Generation Performance of Photovoltaic Modules

Yongxin WU; Hu WANG; Shijie LI; Rui LI; Jingwen WANG

doi:10.16513/j.cnki.10-1427/tk.2017.05.009

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Distributed Energy ›› 2017, Vol. 2 ›› Issue (5) : 55-59. DOI: 10.16513/j.cnki.10-1427/tk.2017.05.009

Application Technology

Dust Deposition Impact on Power Generation Performance of Photovoltaic Modules

Yongxin WU ¹ ,
Hu WANG ¹ ,
Shijie LI ¹ ,
Rui LI ¹ ,
Jingwen WANG ²

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Abstract

The dust deposition on the surface of photovoltaic module will impact its reception of solar radiation and reduce the power generation efficiency. Aiming at the climatic characteristics of Dali, this paper studies the dust deposition and the rain washing impact on power generation efficiency of photovoltaic modules by combining simulation with actual measurement. The results show that the situation of power generation efficiency degradation caused by dust deposition in different months is similar from January to May with less rain, whose range is between 11.4% and 13.3%. The power generation efficiency of photovoltaic module decreases obviously after a long term dust deposition, which can be up to 21.6% in 90 days. The rain wash research results show that the power generation efficiency of the dust deposition module increases from 78.1% to 90% after undergoing rain washing from June to October, which is significantly improved. The cleaning effect of rainwater on the dust deposition on the photovoltaic module surface is obvious.

Key words

photovoltaic module / dust deposition on surface / relative power generation efficiency / output power / rain washing

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Yongxin WU , Hu WANG , Shijie LI , et al . Dust Deposition Impact on Power Generation Performance of Photovoltaic Modules[J]. Distributed Energy Resources. 2017, 2(5): 55-59 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.05.009

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