低壓(ya)(ya)無(wu)功自動補償裝(zhuang)置通(tong)(tong)過(guo)安裝(zhuang)在控(kong)制(zhi)(zhi)柜內的自動無(wu)功補償控(kong)制(zhi)(zhi)器的動作，自動接通(tong)(tong)和斷開控(kong)制(zhi)(zhi)柜內的并(bing)聯(lian)電(dian)容(rong)器組，從而將電(dian)網(wang)無(wu)功功率消耗(hao)保持在低狀態，從而提(ti)高電(dian)網(wang)電(dian)壓(ya)(ya)質量，降低輸電(dian)系(xi)統和變壓(ya)(ya)器的損耗(hao)。同時，也可以通(tong)(tong)過(guo)轉換(huan)開關手(shou)動控(kong)制(zhi)(zhi)并(bing)聯(lian)電(dian)容(rong)器組的切換(huan)。

汽車生產線無功補償模(mo)組的成因、性(xing)質及對其進行的補償

交流電(dian)源(yuan)所能提供的(de)(de)總功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)，稱之為“視(shi)(shi)在(zai)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)”或(huo)“表(biao)現(xian)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)”，在(zai)數(shu)值上是(shi)交流電(dian)路中電(dian)壓與電(dian)流的(de)(de)乘積(ji)。視(shi)(shi)在(zai)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)用字(zi)母(mu)S表(biao)示，即S=U×I，單位是(shi)伏安（VA）或(huo)千伏安（KVA）。它通常用來表(biao)示交流電(dian)源(yuan)設(she)備（如變壓器(qi)）的(de)(de)容量大小。視(shi)(shi)在(zai)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)既不(bu)等于(yu)有功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)，也不(bu)等于(yu)無功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)，但(dan)它既包含有功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)又包含無功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)。能否使視(shi)(shi)在(zai)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)為800KVA的(de)(de)變壓器(qi)輸出800KW的(de)(de)有功(gong)(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)，主要取決(jue)于(yu)負載的(de)(de)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)因數(shu)。

在供配電系(xi)(xi)統(tong)中(zhong)(zhong)，評價供電質量有(you)三個(ge)因(yin)素:(1)供電點的電壓和(he)頻(pin)率(lv)(lv)是(shi)(shi)否(fou)接近恒定。(2)功(gong)率(lv)(lv)因(yin)數是(shi)(shi)否(fou)接近1。(3)三相(xiang)系(xi)(xi)統(tong)中(zhong)(zhong)，相(xiang)電流(liu)和(he)相(xiang)電壓是(shi)(shi)否(fou)趨于(yu)平衡。利(li)用無(wu)(wu)功(gong)補償提高(gao)功(gong)率(lv)(lv)因(yin)數，不僅(jin)可(ke)以大(da)大(da)降低線路中(zhong)(zhong)無(wu)(wu)功(gong)電流(liu)傳輸造成(cheng)的功(gong)率(lv)(lv)損(sun)耗，而(er)且可(ke)以有(you)效(xiao)提高(gao)終端用戶電壓，提高(gao)電氣設(she)備的經濟運(yun)行水(shui)平。因(yin)此，無(wu)(wu)功(gong)補償一直是(shi)(shi)供配電系(xi)(xi)統(tong)中(zhong)(zhong)非常重要的一個(ge)環節(jie)。