發(fā)布時間：2018-03-28 01:14

  本文選題：光伏防逆流裝置　切入點：交流采樣　出處：《廣西大學(xué)》2014年碩士論文

【摘要】：隨著光伏發(fā)電技術(shù)的不斷發(fā)展,太陽能光伏發(fā)電系統(tǒng)的應(yīng)用環(huán)境越來越復(fù)雜。由于當(dāng)光伏發(fā)電系統(tǒng)(特別是無逆流型光伏并網(wǎng)發(fā)電系統(tǒng))所產(chǎn)生的電能進入公共電網(wǎng)時,容易對公共電網(wǎng)造成沖擊,甚至?xí)䦟?dǎo)致公共電網(wǎng)電能質(zhì)量嚴(yán)重下降。所以根據(jù)國家標(biāo)準(zhǔn)Q/GDW480-2010《光伏電站接入電網(wǎng)技術(shù)規(guī)定》,這類光伏發(fā)電系統(tǒng)必須配套加裝防逆流設(shè)施,用來防止“逆流”進入公共電網(wǎng)的發(fā)生。因此,光伏防逆流裝置的使用與智能化設(shè)計變得更為重要。本文在分析無逆流型光伏并網(wǎng)發(fā)電系統(tǒng)特性的基礎(chǔ)上,分析比較了多種交流采樣算法的特點,綜合智能光伏防逆流裝置的各種需求,選擇了快速傅里葉算法作為采樣環(huán)節(jié)的算法�？刂破鞯闹骺匦酒瑸锳RM單片機LPC1768,防逆流裝置主要包括電流電壓采樣電路,模塊電源電路,遙信輸入電路,控制輸出電路、時鐘調(diào)電路,按鍵與顯示電路等部分。本裝置實現(xiàn)了對光伏發(fā)電系統(tǒng)逆功率現(xiàn)象的監(jiān)控、保護作用。本文對交流采樣算法的對比分析及光伏防逆流裝置的硬件設(shè)計做了重點闡述,最后通過針對性的實驗,驗證了該裝置的可行性。
[Abstract]:With the development of photovoltaic technology, the application environment of solar photovoltaic system is more and more complicated. This kind of photovoltaic power generation system must be equipped with anti-current facilities according to the national standard Q/GDW480-2010, "Technical regulations for photovoltaic power station access to the power grid," which can easily impact the public power grid, and even lead to a serious decline in the power quality of the public power grid. Therefore, the use and intelligent design of photovoltaic anti-current device become more important. Based on the analysis of the characteristics of no-countercurrent photovoltaic grid-connected generation system, The characteristics of various AC sampling algorithms are analyzed and compared, and various requirements of intelligent photovoltaic anti-current device are analyzed and compared. The main control chip of the controller is ARM single chip microcomputer LPC1768. The anti-current device mainly includes current and voltage sampling circuit, module power supply circuit, remote signal input circuit, control and output circuit. The device realizes the monitoring of the inverse power phenomenon of photovoltaic power generation system, such as clock adjusting circuit, keystroke and display circuit, etc. In this paper, the comparative analysis of AC sampling algorithm and the hardware design of photovoltaic anti-current device are emphasized. Finally, the feasibility of the device is verified through targeted experiments.
【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

【參考文獻】

相關(guān)期刊論文 前1條

1 于靜;車俊鐵;張吉月;;太陽能發(fā)電技術(shù)綜述[J];世界科技研究與發(fā)展;2008年01期

，

本文編號：1674094