光伏并網發電與光伏離網發電區別是什么?
光伏離網發電系統:
離網發(fa)電系(xi)統由太陽能(neng)電池板(ban)、蓄電池(chi)和充放(fang)電控制器以(yi)及離網逆變器(qi)組(zu)成(cheng),太陽能發電(dian)控(kong)(kong)制(zhi)器(光伏控(kong)(kong)制(zhi)器和風光互補(bu)控(kong)(kong)制(zhi)器)對所發的(de)(de)電(dian)能進行調節(jie)和控(kong)(kong)制(zhi),一方(fang)面(mian)把(ba)調整后(hou)的(de)(de)能量(liang)送(song)(song)往直流負(fu)(fu)載(zai)或交流負(fu)(fu)載(zai),另一方(fang)面(mian)把(ba)多余的(de)(de)能量(liang)送(song)(song)往蓄(xu)(xu)電(dian)池(chi)組(zu)儲(chu)存(cun)(cun),當(dang)(dang)所發的(de)(de)電(dian)不能滿足(zu)負(fu)(fu)載(zai)需要時(shi),控(kong)(kong)制(zhi)器又把(ba)蓄(xu)(xu)電(dian)池(chi)的(de)(de)電(dian)能送(song)(song)往負(fu)(fu)載(zai)。蓄(xu)(xu)電(dian)池(chi)充(chong)滿電(dian)后(hou),控(kong)(kong)制(zhi)器要控(kong)(kong)制(zhi)蓄(xu)(xu)電(dian)池(chi)不被過充(chong)。當(dang)(dang)蓄(xu)(xu)電(dian)池(chi)所儲(chu)存(cun)(cun)的(de)(de)電(dian)能放(fang)完(wan)時(shi),控(kong)(kong)制(zhi)器要控(kong)(kong)制(zhi)蓄(xu)(xu)電(dian)池(chi)不被過放(fang)電(dian),保護蓄(xu)(xu)電(dian)池(chi)。
光伏并網發電系統:
并網(wang)(wang)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系統(tong)是(shi)將(jiang)(jiang)光伏(fu)陣列、風(feng)力機以(yi)(yi)及燃料電(dian)(dian)(dian)(dian)(dian)池(chi)等產生的(de)(de)可(ke)再生能(neng)(neng)(neng)(neng)源不(bu)經過蓄(xu)電(dian)(dian)(dian)(dian)(dian)池(chi)儲能(neng)(neng)(neng)(neng),通過并網(wang)(wang)逆變器直接反向饋入電(dian)(dian)(dian)(dian)(dian)網(wang)(wang)的(de)(de)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系統(tong)。因為(wei)直接將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)(neng)輸入電(dian)(dian)(dian)(dian)(dian)網(wang)(wang),免除配置蓄(xu)電(dian)(dian)(dian)(dian)(dian)池(chi),省掉了蓄(xu)電(dian)(dian)(dian)(dian)(dian)池(chi)儲能(neng)(neng)(neng)(neng)和(he)釋放(fang)的(de)(de)過程,可(ke)以(yi)(yi)充分(fen)利用(yong)(yong)可(ke)再生能(neng)(neng)(neng)(neng)源所發(fa)(fa)(fa)出的(de)(de)電(dian)(dian)(dian)(dian)(dian)力,減(jian)小(xiao)能(neng)(neng)(neng)(neng)量(liang)損(sun)耗,降(jiang)低系統(tong)成本(ben)。并網(wang)(wang)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系統(tong)能(neng)(neng)(neng)(neng)夠并行使(shi)用(yong)(yong)市電(dian)(dian)(dian)(dian)(dian)和(he)可(ke)再生能(neng)(neng)(neng)(neng)源作(zuo)(zuo)為(wei)本(ben)地交流負載的(de)(de)電(dian)(dian)(dian)(dian)(dian)源,降(jiang)低整個系統(tong)的(de)(de)負載缺電(dian)(dian)(dian)(dian)(dian)率。同時(shi),可(ke)再生能(neng)(neng)(neng)(neng)源并網(wang)(wang)系統(tong)可(ke)以(yi)(yi)對(dui)公(gong)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)網(wang)(wang)起到調(diao)峰作(zuo)(zuo)用(yong)(yong)。并網(wang)(wang)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系統(tong)是(shi)太陽能(neng)(neng)(neng)(neng)、風(feng)力發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)的(de)(de)發(fa)(fa)(fa)展方向,代表了21世紀最具吸引(yin)力的(de)(de)能(neng)(neng)(neng)(neng)源利用(yong)(yong)技術。
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