在低壓配電部分有(you)進線柜(ju)、出線柜(ju)、當然也少不了電容(rong)補(bu)償柜(ju)，那么(me)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)補(bu)(bu)(bu)(bu)償(chang)(chang)柜(ju)有什么(me)作(zuo)用呢，顧(gu)名思意就(jiu)是(shi)起電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)補(bu)(bu)(bu)(bu)償(chang)(chang)作(zuo)用的(de)，先來(lai)(lai)看看電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)補(bu)(bu)(bu)(bu)償(chang)(chang)原理，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)補(bu)(bu)(bu)(bu)償(chang)(chang)時電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)和(he)負載是(shi)并聯連接的(de)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)就(jiu)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)庫一樣，當(dang)負載增(zeng)大時，由于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源存在內阻，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源輸出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)就(jiu)會(hui)下(xia)降，由于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)的(de)兩(liang)端要維持原來(lai)(lai)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，也就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)內的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)量要流出一部(bu)分，延緩了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)下(xia)降趨勢，就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)補(bu)(bu)(bu)(bu)償(chang)(chang)原理。下(xia)面具體來(lai)(lai)看看低壓(ya)柜(ju)為什么(me)要進行(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)補(bu)(bu)(bu)(bu)償(chang)(chang)。

在低壓電(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)中，有像(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)及其它有線(xian)(xian)圈的(de)(de)(de)(de)(de)設(she)備、像(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)抗器(qi)等(deng)，這類設(she)備從線(xian)(xian)路(lu)(lu)(lu)中取得一(yi)部電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)做(zuo)功(gong)(gong)(gong)外，還要(yao)從線(xian)(xian)路(lu)(lu)(lu)上(shang)消耗一(yi)問好不(bu)(bu)(bu)(bu)做(zuo)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，這就(jiu)(jiu)使得線(xian)(xian)路(lu)(lu)(lu)上(shang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)要(yao)額外的(de)(de)(de)(de)(de)加大(da)一(yi)些，功(gong)(gong)(gong)率(lv)(lv)因(yin)數就(jiu)(jiu)是用來(lai)衡量(liang)這一(yi)部分不(bu)(bu)(bu)(bu)做(zuo)功(gong)(gong)(gong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)，當電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)為0時，功(gong)(gong)(gong)率(lv)(lv)因(yin)數等(deng)于1，當電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)所占比例逐漸(jian)增大(da)時，功(gong)(gong)(gong)率(lv)(lv)因(yin)數逐漸(jian)下(xia)降(jiang)(jiang)(jiang)，顯然，功(gong)(gong)(gong)率(lv)(lv)因(yin)數越低，線(xian)(xian)路(lu)(lu)(lu)額外負擔(dan)越大(da)，發電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)、電(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)變壓器(qi)及配電(dian)(dian)(dian)(dian)(dian)(dian)裝(zhuang)置(zhi)的(de)(de)(de)(de)(de)額外負擔(dan)也(ye)較大(da)，這除了降(jiang)(jiang)(jiang)低線(xian)(xian)路(lu)(lu)(lu)及電(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)設(she)備的(de)(de)(de)(de)(de)利(li)用率(lv)(lv)外，還會增加線(xian)(xian)路(lu)(lu)(lu)上(shang)的(de)(de)(de)(de)(de)功(gong)(gong)(gong)率(lv)(lv)損(sun)耗，增大(da)電(dian)(dian)(dian)(dian)(dian)(dian)壓損(sun)失，降(jiang)(jiang)(jiang)低供電(dian)(dian)(dian)(dian)(dian)(dian)質量(liang)。為此，應(ying)當提高功(gong)(gong)(gong)率(lv)(lv)因(yin)數。提高功(gong)(gong)(gong)率(lv)(lv)因(yin)數最方便的(de)(de)(de)(de)(de)方法就(jiu)(jiu)是并聯電(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)，產生電(dian)(dian)(dian)(dian)(dian)(dian)容電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)抵消電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，將不(bu)(bu)(bu)(bu)做(zuo)功(gong)(gong)(gong)的(de)(de)(de)(de)(de)所謂(wei)無(wu)功(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)減小到一(yi)定(ding)范(fan)圍以內。無(wu)功(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)同(tong)有功(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)一(yi)樣，是保(bao)證(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)能質量(liang)不(bu)(bu)(bu)(bu)可缺少的(de)(de)(de)(de)(de)部分，在電(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)中應(ying)保(bao)持(chi)無(wu)功(gong)(gong)(gong)平衡，否(fou)則(ze)，將會使系(xi)統(tong)電(dian)(dian)(dian)(dian)(dian)(dian)壓降(jiang)(jiang)(jiang)低，設(she)備損(sun)壞，功(gong)(gong)(gong)率(lv)(lv)因(yin)數下(xia)降(jiang)(jiang)(jiang)，嚴(yan)重(zhong)時，會引起電(dian)(dian)(dian)(dian)(dian)(dian)壓崩潰，系(xi)統(tong)解(jie)裂(lie)，造(zao)成大(da)面積停電(dian)(dian)(dian)(dian)(dian)(dian)事故，因(yin)此，解(jie)決電(dian)(dian)(dian)(dian)(dian)(dian)網無(wu)功(gong)(gong)(gong)容量(liang)不(bu)(bu)(bu)(bu)足，增裝(zhuang)無功補償設(she)備，提高網絡(luo)的功率因數，對電(dian)網降(jiang)損節電(dian)，安(an)全可靠運行有著極為重要的意(yi)義。