唐山光伏發電設備在分布式光伏發電過程中的影(ying)響(xiang)有哪(na)些呢?

　　1.影(ying)響(xiang)電網規劃，并(bing)網分布式光伏系統(tong)增加了負荷預測(ce)的難度，改變了現有負荷增長模型。

　　2、不同的并網方式影響各不相同。離網運行的分布式光伏對電網沒有影響;并網但不向電網輸送功率的分布式光伏發電會(hui)造(zao)成電壓波動;并(bing)網(wang)并(bing)且向電網(wang)輸送功率的(de)并(bing)網(wang)方式，會(hui)造(zao)成電壓波動并(bing)且影響(xiang)繼(ji)電保護的(de)配置。

　　3、對電(dian)能質(zhi)量產生影(ying)響。分(fen)(fen)布式光伏接入(ru)的重要影(ying)響是造成饋(kui)線(xian)上(shang)的電(dian)壓分(fen)(fen)布改(gai)變，其影(ying)響的大小與接入(ru)容量、接入(ru)位置密(mi)切相關(guan)(guan)。光伏發電(dian)一般通過逆變器(qi)接入(ru)電(dian)網，這(zhe)類電(dian)力電(dian)子器(qi)件的頻繁開(kai)通和(he)關(guan)(guan)斷，容易(yi)產生諧波(bo)污染。

　　4.對繼電(dian)(dian)(dian)保(bao)(bao)護(hu)的(de)影響.我國大多(duo)數配電(dian)(dian)(dian)網(wang)都(dou)是單(dan)功率(lv)(lv)輻(fu)射結構,具有快(kuai)斷和限(xian)速斷路(lu)保(bao)(bao)護(hu),無方(fang)向性.分布(bu)式電(dian)(dian)(dian)源接(jie)入(ru)配電(dian)(dian)(dian)網(wang)后,其注入(ru)功率(lv)(lv)將縮小繼電(dian)(dian)(dian)保(bao)(bao)護(hu)范圍,不能可靠地(di)保(bao)(bao)護(hu)整條線路(lu),即使在其他并行(xing)分支故障(zhang)的(de)情況下,也會造(zao)成安裝(zhuang)分布(bu)式光(guang)伏繼電(dian)(dian)(dian)保(bao)(bao)護(hu)的(de)誤操作。

　　分布式光伏發電系統是指(zhi)太陽能電(dian)(dian)(dian)(dian)池組件(jian)產生的(de)直流電(dian)(dian)(dian)(dian)通過并(bing)網(wang)逆變器轉換成(cheng)滿足商業電(dian)(dian)(dian)(dian)網(wang)要求的(de)交流電(dian)(dian)(dian)(dian)，然(ran)后直接接入公共電(dian)(dian)(dian)(dian)網(wang)。并(bing)網(wang)發電(dian)(dian)(dian)(dian)系(xi)統有集中的(de)大(da)型并(bing)網(wang)電(dian)(dian)(dian)(dian)站(zhan)，一般為電(dian)(dian)(dian)(dian)站(zhan)。其主要特點是將(jiang)產生的(de)能量直接輸(shu)送到電(dian)(dian)(dian)(dian)網(wang)，由電(dian)(dian)(dian)(dian)網(wang)統一分配給用戶(hu)。然(ran)而，這類電(dian)(dian)(dian)(dian)站(zhan)投(tou)資(zi)大(da)、建(jian)(jian)設周(zhou)期長、占地面(mian)積(ji)大(da)，發展難(nan)度大(da)。分散的(de)小規模并(bing)網(wang)發電(dian)(dian)(dian)(dian)系(xi)統，尤其是光伏一體(ti)化發電(dian)(dian)(dian)(dian)系(xi)統，因其資(zi)金投(tou)入少(shao)、建(jian)(jian)設速度快、占地面(mian)積(ji)小、政策支(zhi)持強(qiang)等(deng)優勢，成(cheng)為并(bing)網(wang)發電(dian)(dian)(dian)(dian)的(de)主流。