一、電力電容器常見的規格和型號

1、電力電容器的規格

（1）額定電(dian)壓(ya)：電(dian)容(rong)(rong)器有高壓(ya)電(dian)容(rong)(rong)器、低(di)壓(ya)電(dian)容(rong)(rong)器之分。以低(di)壓(ya)電(dian)容(rong)(rong)器為例，常見額定電(dian)壓(ya)等級有250V、440V、480V、525V、690V等。

（2）額(e)定容(rong)量：電力電容(rong)器的(de)額(e)定容(rong)量，一般在(zai)10Kvar-60Kvar之間。常見的(de)額(e)定容(rong)量有(you)10Kvar、15Kvar、20Kvar、25Kvar、30Kvar、40Kvar、50Kvar、60Kvar等(deng)。

（3）相(xiang)數：電力系統(tong)中，電容(rong)(rong)器(qi)(qi)有(you)三(san)相(xiang)電容(rong)(rong)器(qi)(qi)和單(dan)(dan)相(xiang)電容(rong)(rong)器(qi)(qi)。進行無功補(bu)償的(de)電力電容(rong)(rong)器(qi)(qi)，多為三(san)相(xiang)電容(rong)(rong)器(qi)(qi)。當企業(ye)需要進行分相(xiang)補(bu)償時，就需要使(shi)用(yong)單(dan)(dan)相(xiang)電容(rong)(rong)器(qi)(qi)。

2、電力電容器常見的型號

在供電(dian)系統(tong)中(zhong)，我們經常會看到以(yi)下電(dian)力電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)型號(hao)。BZMJ系列(lie)(lie)電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，代表油(you)式介(jie)質(zhi)的并(bing)聯電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，幾乎被市場淘汰(tai)；BKMJ系列(lie)(lie)電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，代表干(gan)式硅油(you)介(jie)質(zhi)的并(bing)聯電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，它(ta)在電(dian)網中(zhong)應(ying)用較多；BSMJ系列(lie)(lie)電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，代表微晶(jing)蠟填充的并(bing)聯電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，市場中(zhong)有(you)(you)不(bu)少企(qi)業(ye)在使(shi)用；AKMJ/ASMJ系列(lie)(lie)電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，代表硅油(you)/微晶(jing)蠟填充的濾波電(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)(qi)(qi)，它(ta)們可以(yi)在有(you)(you)諧波的場景中(zhong)使(shi)用。

二、電力電容器接線方式

1、星形接線方式

在(zai)電(dian)(dian)(dian)(dian)力系統中(zhong)(zhong)(zhong)(zhong)，星(xing)形(xing)接線(xian)(xian)(xian)可分為(wei)(wei)帶中(zhong)(zhong)(zhong)(zhong)性(xing)(xing)(xing)線(xian)(xian)(xian)和(he)不(bu)(bu)帶中(zhong)(zhong)(zhong)(zhong)性(xing)(xing)(xing)線(xian)(xian)(xian)兩(liang)種情況。其中(zhong)(zhong)(zhong)(zhong)帶中(zhong)(zhong)(zhong)(zhong)性(xing)(xing)(xing)線(xian)(xian)(xian)方式的(de)優勢(shi)在(zai)于(yu)(yu)可以(yi)進行分相(xiang)(xiang)(xiang)(xiang)投(tou)切，從(cong)而補償電(dian)(dian)(dian)(dian)網負荷(he)的(de)三(san)(san)相(xiang)(xiang)(xiang)(xiang)不(bu)(bu)平衡。對(dui)于(yu)(yu)不(bu)(bu)帶中(zhong)(zhong)(zhong)(zhong)性(xing)(xing)(xing)線(xian)(xian)(xian)方式來說，其需(xu)要兩(liang)相(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)容(rong)才能形(xing)成回路(lu)。和(he)星(xing)形(xing)帶中(zhong)(zhong)(zhong)(zhong)性(xing)(xing)(xing)線(xian)(xian)(xian)方式相(xiang)(xiang)(xiang)(xiang)同的(de)是，它們(men)的(de)三(san)(san)相(xiang)(xiang)(xiang)(xiang)基波電(dian)(dian)(dian)(dian)壓(ya)(ya)對(dui)稱，所以(yi)三(san)(san)相(xiang)(xiang)(xiang)(xiang)基波電(dian)(dian)(dian)(dian)流合成值為(wei)(wei)零；而3次諧波電(dian)(dian)(dian)(dian)流則由線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)壓(ya)(ya)決(jue)定，三(san)(san)相(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)3次諧波大小(xiao)相(xiang)(xiang)(xiang)(xiang)等(deng)，方向相(xiang)(xiang)(xiang)(xiang)同，在(zai)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)壓(ya)(ya)中(zhong)(zhong)(zhong)(zhong)相(xiang)(xiang)(xiang)(xiang)互抵消，因此電(dian)(dian)(dian)(dian)容(rong)支路(lu)中(zhong)(zhong)(zhong)(zhong)沒有(you)3次諧波電(dian)(dian)(dian)(dian)流。

2、三角形接線

在(zai)電(dian)力(li)(li)系(xi)統中(zhong)，三(san)角形(xing)接(jie)法按照(zhao)星(xing)(xing)形(xing)三(san)角形(xing)變換(huan)原理，可以轉化為星(xing)(xing)形(xing)接(jie)線。當電(dian)力(li)(li)系(xi)統中(zhong)存在(zai)三(san)相不平(ping)衡(heng)的負載(zai)時，可令各相電(dian)容值不等(deng)(deng)，根據各相負荷進行(xing)分(fen)相補償(chang)。在(zai)電(dian)力(li)(li)補償(chang)電(dian)容器總無(wu)(wu)功(gong)(gong)容量相等(deng)(deng)的情(qing)況(kuang)下，三(san)角形(xing)接(jie)線和星(xing)(xing)形(xing)無(wu)(wu)中(zhong)性(xing)線方式度外(wai)電(dian)路表示的特性(xing)相同(tong)。在(zai)實際進行(xing)無(wu)(wu)功(gong)(gong)補償(chang)時，企業(ye)采用三(san)角形(xing)接(jie)線方式更多(duo)。

星形接線和三角形接線，是品牌電力電容器常見的(de)接(jie)(jie)線方式。目前企業常用的(de)接(jie)(jie)線方式是三角形接(jie)(jie)線，因為它可(ke)以實現分相(xiang)補償，解決三相(xiang)不(bu)平衡的(de)問題。