本文選題：積塵特性 + 光伏面板��； 參考：《浙江工業(yè)大學(xué)》2015年碩士論文

【摘要】：隨著經(jīng)濟(jì)全球化的深入發(fā)展,能源消費(fèi)在加速增長,不可再生能源的資源競爭日益激烈,人們逐漸重視光伏等清潔能源的發(fā)展。目前對于提高光伏發(fā)電效率的研究主要集中在對安裝方式優(yōu)化、系統(tǒng)性能優(yōu)化和對新型光電轉(zhuǎn)化材料研發(fā)等方面。而太陽能面板積灰問題對于系統(tǒng)效率的影響并未得到充分的重視。光伏面板積塵直接降低其接收到的太陽輻射量,從而降低其輸出功率,限制光伏面板正常效能的發(fā)揮。論文以杭州市區(qū)分布式光伏系統(tǒng)為研究對象,實(shí)驗(yàn)測試了積塵情況下的光伏面板輸出功率衰減規(guī)律,證明了光伏面板定期除塵的必要性,分析了除塵機(jī)理、設(shè)計(jì)了除塵原理機(jī)構(gòu),并進(jìn)行了仿真分析和實(shí)驗(yàn)驗(yàn)證。主要研究內(nèi)容如下:1、分析了城市環(huán)境中灰塵降落到光伏面板表面形成積塵的原理。2、選擇了杭州市內(nèi)20kWp屋頂光伏電站進(jìn)行實(shí)驗(yàn)研究。研究了安裝于屋頂?shù)墓夥姘咫S時間推移在積塵的影響下輸出功率特性。將面板在不同光照下的輸出功率統(tǒng)一轉(zhuǎn)換到在單位光照下的輸出功率進(jìn)行對比,建立面板積塵時間與其輸出效率的擬合函數(shù)。綜合清潔機(jī)器人技術(shù)指標(biāo)、光伏面板發(fā)電效率和經(jīng)濟(jì)效益平衡等因素,得出最佳的清潔間隔時間n=6天。3、研究了面板表面積塵的物理特性,理論分析了通過顆粒作用力方程來求解顆粒離散相的運(yùn)動軌跡,以及通過運(yùn)動軌跡方程求解顆粒速度的方法。4、設(shè)計(jì)了面板除塵的吸塵結(jié)構(gòu)。重點(diǎn)對吸取口段、彎管段部件進(jìn)行仿真,用Lagrangian離散相方法在ANSYS軟件中計(jì)算,得出灰塵顆粒在吸取口中和彎管段中的流速分布、壓力分布、不同塵粒大小的灰塵軌跡線,確定吸塵口處的壓力最優(yōu)值。5、設(shè)計(jì)了光伏面板除塵實(shí)驗(yàn)裝置進(jìn)行實(shí)驗(yàn)研究,測出了吸塵裝置各位置的風(fēng)速值,驗(yàn)證了理論分析的正確性。
[Abstract]:With the development of economic globalization, energy consumption is increasing rapidly, and the competition of non-renewable energy resources is becoming increasingly fierce. People pay more and more attention to the development of clean energy such as photovoltaic (PV). At present, the research on improving the efficiency of photovoltaic power generation mainly focuses on the optimization of installation mode, the optimization of system performance and the research and development of new photovoltaic conversion materials. However, the influence of solar panel ash deposition on system efficiency has not been paid enough attention to. The dust accumulation of photovoltaic panels directly reduces the amount of solar radiation it receives, thus reducing its output power, limiting the normal performance of photovoltaic panels. This paper takes the distributed photovoltaic system in Hangzhou urban area as the research object, tests the law of output power attenuation of photovoltaic panels under the condition of dust accumulation, proves the necessity of regular dust removal of photovoltaic panels, and analyzes the dust removal mechanism. The principle mechanism of dust removal is designed, and the simulation analysis and experimental verification are carried out. The main research contents are as follows: 1. The principle of dust deposition on the surface of photovoltaic panels in urban environment is analyzed. The 20kWp roof photovoltaic power station in Hangzhou is selected for experimental study. The output power characteristics of the photovoltaic panels mounted on the roof under the influence of dust accumulation over time are studied. The output power of the panel under different illumination is converted to the output power under unit illumination. The fitting function between the dust accumulation time and the output efficiency of the panel is established. Based on the technical index of cleaning robot, the balance of efficiency and economic benefit of photovoltaic panel generation, the optimum cleaning interval of 6 days 路3 was obtained, and the physical characteristics of surface dust of panel were studied. In this paper, the particle force equation is used to solve the moving trajectory of the discrete phase and the method .4 to solve the particle velocity by the motion trajectory equation is analyzed. The dust cleaning structure of the face plate is designed. The simulation of the parts of the suction section and the bend section is emphasized, and the Lagrangian discrete phase method is used to calculate the velocity distribution, pressure distribution and dust trajectory of the dust particles in the suction mouth and the bend pipe section by using the Lagrangian discrete phase method in the ANSYS software. The optimum value of pressure at the suction orifice is determined. The experimental device of photovoltaic panel dust removal is designed to carry out experimental research, and the wind velocity values of each position of the dust collector are measured, which verifies the correctness of the theoretical analysis.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM615

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 居發(fā)禮;積灰對光伏發(fā)電工程的影響研究[D];重慶大學(xué);2010年

2 張麗薇;氣溶膠顆粒在矩形風(fēng)管系統(tǒng)中沉降特性的實(shí)驗(yàn)研究[D];湖南大學(xué);2007年

，

本文編號：1915354