? ? ? 直(zhi)流屏是(shi)我(wo)們在發電(dian)(dian)廠(chang)和變電(dian)(dian)站中用(yong)來提供直(zhi)流電(dian)(dian)源的裝置(zhi)。它作(zuo)為(wei)一種理想的蓄電(dian)(dian)池直(zhi)流電(dian)(dian)源屏，具有(you)體積(ji)小，電(dian)(dian)壓(ya)穩(wen)定，能量大等(deng)特點，隨著社會的發展，現(xian)在使用(yong)越來越廣泛。那么直(zhi)流屏廠(chang)家直(zhi)流屏的傳(chuan)輸(shu)方法(fa)與哪幾方面的因素有(you)關？ ?
??????1.數組大小 ?
??????通(tong)常，使用一個(ge)(ge)或兩(liang)個(ge)(ge)600伏(fu)(fu)(fu)光伏(fu)(fu)(fu)陣(zhen)列串會很好地(di)工(gong)(gong)作。如果(guo)至大(da)輸入電(dian)壓為(wei)600伏(fu)(fu)(fu)，Voc工(gong)(gong)作窗(chuang)口(kou)將(jiang)在(zai)100至525伏(fu)(fu)(fu)之(zhi)間。對于部分遮擋或被(bei)雪覆蓋的陣(zhen)列，使用低工(gong)(gong)作輸入電(dian)壓。保持(chi)陣(zhen)列Voc低于570V，以便在(zai)低溫下(xia)生產。600伏(fu)(fu)(fu)轉換開關額定至大(da)電(dian)流(liu)為(wei)30安，即至大(da)電(dian)流(liu)。Isc應(ying)小(xiao)于或等(deng)于24A ?
??????2.逆變器/充電器 ?
??????直(zhi)流屏廠家子陣(zhen)列配置(zhi)可以(yi)通(tong)(tong)過(guo)帶較大逆(ni)變(bian)器(qi)(qi)(qi)(qi)的(de)融(rong)合轉換盒或雙輸出組合器(qi)(qi)(qi)(qi)盒來管理，因此陣(zhen)列的(de)一部分通(tong)(tong)過(guo)控制(zhi)器(qi)(qi)(qi)(qi)布線，另一部分直(zhi)接(jie)布線到(dao)逆(ni)變(bian)器(qi)(qi)(qi)(qi)。逆(ni)變(bian)器(qi)(qi)(qi)(qi)/充(chong)電(dian)器(qi)(qi)(qi)(qi)在并(bing)網運行期間保持(chi)電(dian)池浮動。備(bei)份(fen)期間，并(bing)網逆(ni)變(bian)器(qi)(qi)(qi)(qi)保持(chi)關閉狀態，并(bing)與陣(zhen)列和備(bei)份(fen)交(jiao)流電(dian)路斷開連接(jie)。因此，逆(ni)變(bian)器(qi)(qi)(qi)(qi)/充(chong)電(dian)器(qi)(qi)(qi)(qi)的(de)配置(zhi)和尺(chi)寸獨立于并(bing)網逆(ni)變(bian)器(qi)(qi)(qi)(qi)。可以(yi)使用(yong)單相(xiang)、分相(xiang)或三(san)相(xiang)逆(ni)變(bian)器(qi)(qi)(qi)(qi)充(chong)電(dian)器(qi)(qi)(qi)(qi)配置(zhi)。備(bei)用(yong)逆(ni)變(bian)器(qi)(qi)(qi)(qi)/充(chong)電(dian)器(qi)(qi)(qi)(qi)的(de)尺(chi)寸是(shi)通(tong)(tong)過(guo)計算(suan)備(bei)用(yong)負載的(de)至大連續和啟動浪涌功率(lv)要求(qiu)來確(que)定的(de)。
??????3.電池尺寸 ?
??????無論陣列大(da)小如何，直(zhi)流(liu)屏電(dian)(dian)(dian)(dian)(dian)池組(zu)(zu)也(ye)是可(ke)擴展(zhan)的(de)。電(dian)(dian)(dian)(dian)(dian)池大(da)小計算可(ke)以基于關鍵負載需求所需的(de)千瓦時/天(tian)和所需的(de)備(bei)用電(dian)(dian)(dian)(dian)(dian)源天(tian)數。至小電(dian)(dian)(dian)(dian)(dian)池組(zu)(zu)尺寸基于每個控(kong)制(zhi)器(qi)(qi)的(de)至大(da)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)60A。電(dian)(dian)(dian)(dian)(dian)池的(de)至大(da)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)率通常(chang)為碳(tan)/20Ah額(e)定值的(de)15%至30%。控(kong)制(zhi)器(qi)(qi)可(ke)以定制(zhi)編程(cheng)，以降(jiang)低較小電(dian)(dian)(dian)(dian)(dian)池組(zu)(zu)的(de)至大(da)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)。逆變(bian)器(qi)(qi)/充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)至大(da)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)也(ye)可(ke)以降(jiang)低。 ?
??????直流(liu)屏廠家(jia)在(zai)(zai)陽光明媚的(de)日子里，控制器使用(yong)有限的(de)陣(zhen)列功(gong)率給電(dian)池(chi)充電(dian)，并“忽略”可(ke)(ke)能損壞較小(xiao)電(dian)池(chi)組的(de)多余(yu)功(gong)率。在(zai)(zai)陰天(tian)，當需要(yao)提供與較大的(de)交流(liu)耦(ou)合(he)系統相(xiang)同(tong)數量(liang)的(de)備(bei)用(yong)電(dian)源時，可(ke)(ke)以接受全陣(zhen)列電(dian)源。 ?
??????關鍵負載備份要求通常(chang)顯著低于(yu)每日與電網相關的(de)(de)使(shi)用(yong)。DC轉移解決方案(an)可以(yi)提供縮小的(de)(de)備份選項(xiang)，與并網光伏系統的(de)(de)規模無關。
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