低(di)(di)壓無功(gong)(gong)(gong)補(bu)償(chang)柜(ju)用(yong)于低(di)(di)壓電(dian)網的(de)無功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)補(bu)償(chang)，以(yi)提高電(dian)網功(gong)(gong)(gong)率(lv)(lv)因數，降低(di)(di)線(xian)路(lu)損耗，改善(shan)電(dian)能質量。該(gai)系列(lie)低(di)(di)壓無功(gong)(gong)(gong)補(bu)償(chang)柜(ju)以(yi)智能型(xing)無功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)控制器(qi)為核心(xin)，利用(yong)電(dian)容(rong)型(xing)接觸器(qi)作為電(dian)容(rong)器(qi)組的(de)投(tou)切器(qi)件(jian)，根據電(dian)網功(gong)(gong)(gong)率(lv)(lv)因數自動進行投(tou)切電(dian)容(rong)，確保電(dian)網始終具有(you)較高的(de)功(gong)(gong)(gong)率(lv)(lv)因數。

光纖補(bu)償模(mo)組解決方案

在(zai)進行串聯(lian)電(dian)(dian)抗(kang)器(qi)選型要(yao)進行以下(xia)幾步：一步，要(yao)確定電(dian)(dian)容(rong)器(qi)的(de)額定電(dian)(dian)壓，這個(ge)會在(zai)本(ben)(ben)文(wen)的(de)第4節重點(dian)說(shuo)明；第二步，要(yao)確定電(dian)(dian)抗(kang)器(qi)的(de)補(bu)償(chang)方式(shi)，單相、三(san)相，單相用于無功(gong)補(bu)償(chang)中的(de)分補(bu)，三(san)相用于無功(gong)補(bu)償(chang)中的(de)共補(bu)；第三(san)步，確定電(dian)(dian)抗(kang)器(qi)的(de)容(rong)量，根(gen)據電(dian)(dian)網(wang)背(bei)景確定電(dian)(dian)抗(kang)器(qi)的(de)電(dian)(dian)抗(kang)率，這個(ge)會在(zai)本(ben)(ben)文(wen)的(de)第4節重點(dian)說(shuo)明，再使用公(gong)式(shi)電(dian)(dian)抗(kang)率=XL/Xc，按(an)照確定好的(de)電(dian)(dian)容(rong)器(qi)容(rong)量計算出對應的(de)電(dian)(dian)抗(kang)器(qi)的(de)容(rong)量。

在(zai)用(yong)電(dian)單(dan)位中(zhong)，大(da)量的(de)用(yong)電(dian)設(she)備是異步(bu)電(dian)動機、電(dian)力變(bian)壓器、電(dian)阻爐(lu)、電(dian)弧爐(lu)、照明等，前(qian)兩項用(yong)電(dian)設(she)備在(zai)電(dian)網中(zhong)的(de)滯后無功功率的(de)比重 大(da)，有(you)的(de)可達全廠(chang)負荷(he)的(de)80％，甚至更大(da)。因(yin)此在(zai)設(she)計(ji)中(zhong)正(zheng)確(que)選用(yong)電(dian)動機、變(bian)壓器等容量，可以提(ti)高負荷(he)率，對提(ti)高自然(ran)功率因(yin)數具有(you)重要(yao)意義。