本文選題：光伏匯流裝置　切入點(diǎn)：LPC1114　出處：《廣西大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著光伏發(fā)電技術(shù)的不斷提高,太陽能光伏發(fā)電系統(tǒng)對其各功能組件提出了更高要求。光伏組件的轉(zhuǎn)換效率隨其使用數(shù)量增加而提高,但占用面積大,系統(tǒng)內(nèi)部連接成本高,為了減少光伏組件與逆變器之間的連線,并在光伏組件和逆變器之間加以監(jiān)控和保護(hù),就需要將多路光伏組件的輸出進(jìn)行匯流和保護(hù)后,變?yōu)檩^少路的光伏電流輸出,最后輸入到逆變器。因此,在光伏發(fā)電系統(tǒng)中對智能化的光伏匯流裝置進(jìn)行研究和設(shè)計(jì)具有重要意義。 本文在分析光伏電池組件特性的基礎(chǔ)上,重點(diǎn)研究了光照強(qiáng)度、溫度、雷擊對光伏系統(tǒng)性能的影響。研制了一套具有上位機(jī)監(jiān)控功能的智能光伏匯流裝置系統(tǒng)。該裝置以ARM單片機(jī)LPC1114為控制核心,設(shè)計(jì)了工作電源模塊電路,溫度檢測采樣電路,電流電壓檢測電路,防雷單元,裝置顯示電路,RS485通信電路,最后為實(shí)現(xiàn)上位機(jī)與光伏匯流裝置通信及其對裝置在線監(jiān)控,設(shè)計(jì)了基于LabVIEW的上位機(jī)監(jiān)控系統(tǒng),實(shí)現(xiàn)了對光伏發(fā)電系統(tǒng)中光伏組件的匯流、保護(hù)、監(jiān)控作用。 本文對光伏匯流裝置的硬件及其上位機(jī)的軟件進(jìn)行了重點(diǎn)設(shè)計(jì)。最后通過大量的實(shí)驗(yàn),驗(yàn)證了該裝置在光伏發(fā)電系統(tǒng)中的穩(wěn)定性和可行性,優(yōu)化了系統(tǒng)的拓?fù)浣Y(jié)構(gòu),提高了系統(tǒng)的可靠性和可維護(hù)性。
[Abstract]:With the continuous improvement of photovoltaic power generation technology, the solar photovoltaic system has put forward higher requirements for its functional components. The conversion efficiency of photovoltaic modules increases with the increase of the number of photovoltaic modules, but the area occupied is large, and the cost of internal connection of the system is high. In order to reduce the connection between the PV module and the inverter and monitor and protect the PV module and inverter, it is necessary to converge and protect the output of the multi-channel PV module into a smaller output of photovoltaic current. Finally, the inverter is input to the inverter. Therefore, it is of great significance to study and design the intelligent PV confluence device in the photovoltaic power generation system. Based on the analysis of the characteristics of photovoltaic cell modules, the light intensity and temperature are studied in this paper. The effect of lightning stroke on the performance of photovoltaic system. A set of intelligent PV confluence device system with the function of upper computer monitoring is developed. The working power module circuit and temperature detection sampling circuit are designed with ARM single chip computer LPC1114 as the control core. The current and voltage detection circuit, lightning protection unit, device display circuit and RS485 communication circuit are designed. Finally, in order to realize the communication between the upper computer and the photovoltaic confluence device and the on-line monitoring of the device, a monitoring system of the upper computer based on LabVIEW is designed. The functions of confluence, protection and monitoring of photovoltaic modules in photovoltaic power generation system are realized. In this paper, the hardware of PV confluence device and the software of its upper computer are mainly designed. Finally, through a lot of experiments, the stability and feasibility of the device in photovoltaic power generation system are verified, and the topological structure of the system is optimized. The reliability and maintainability of the system are improved.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM615

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本文編號：1575977