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Ningxia University (2020)

Study on the Influence of Atmospheric Environment on the Power Generation Performance of Photovoltaic Panel in Desertification Areas

刘天胜;

Titre : Study on the Influence of Atmospheric Environment on the Power Generation Performance of Photovoltaic Panel in Desertification Areas

Auteur : 刘天胜;

Grade : Master’s Theses 2020

Université : Ningxia University

Résumé partiel
Photovoltaic power generation has many advantages in many new green energy sources such as cleanness and no pollution,the most mature technology,simple device structure,application and popularization,etc.Desertification areas have abundant solar energy resources,strong illumination,low air humidity and other favorable environmental conditions,which provide unique conditions for the development of photovoltaic power stations.However,environmental conditions and their own performance also have some limiting factors on their power generation,such as photovoltaic panel temperature,incident irradiance and dust particles suspended in the air.Therefore,how to accurately predict the power generation efficiency of photovoltaic modules is a hot topic for many scholars in related fields in recent years.Good progress has been made in the prediction of incident irradiance,but the prediction model of photovoltaic cell temperature is still a research hotspot in this field.In this paper,the basic problems of dust deposition in photovoltaic power station,the influence mechanism of dust particles on photovoltaic panels and the temperature prediction model of photovoltaic panels are studied.The main tasks include:Firstly,the calculation of wind speed profile and dust settlement in photovoltaic power station is studied by combining field test with numerical modeling and analysis.The results show that :(1)the wind speed profile in photovoltaic panel array obeys the improved Prandtl model ;(2)Based on the formula of dry dust deposition rate under rough surface condition,the dry dust deposition rate under different conditions is analyzed,and the horizontal flux of atmospheric dust deposition can be preliminarily predicted based on this formula.(3)The inclination angle of the photovoltaic panel will affect the distribution law of dust accumulation.With the increase of the inclination angle from 0 degree to 50 degree,the dust accumulation on the surface of the photovoltaic panel gradually shifts from the top to the bottom,and is relatively concentrated at the central axis of the panel at 30 degree,and the dust accumulation shows a change law of increasing first and then decreasing,and the dust accumulation is the smallest at 30 degree

Mots clés : Dust Deposition; Temperature; Mie theory; Irradiance; Wind Profile;

Présentation (CNKI)

Page publiée le 18 mai 2021