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)(dian)壓(ya)(ya)：電(dian)(dian)容器(qi)有高壓(ya)(ya)電(dian)(dian)容器(qi)、低壓(ya)(ya)電(dian)(dian)容器(qi)之分(fen)。以低壓(ya)(ya)電(dian)(dian)容器(qi)為例，常見額定電(dian)(dian)壓(ya)(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(yi)般在10Kvar-60Kvar之間。常(chang)見的(de)額(e)定容(rong)量有10Kvar、15Kvar、20Kvar、25Kvar、30Kvar、40Kvar、50Kvar、60Kvar等(deng)。

（3）相(xiang)(xiang)數：電(dian)力系(xi)統中，電(dian)容(rong)(rong)(rong)器(qi)(qi)(qi)有三相(xiang)(xiang)電(dian)容(rong)(rong)(rong)器(qi)(qi)(qi)和單相(xiang)(xiang)電(dian)容(rong)(rong)(rong)器(qi)(qi)(qi)。進(jin)行無(wu)功補償的電(dian)力電(dian)容(rong)(rong)(rong)器(qi)(qi)(qi)，多(duo)為三相(xiang)(xiang)電(dian)容(rong)(rong)(rong)器(qi)(qi)(qi)。當企業需要進(jin)行分相(xiang)(xiang)補償時(shi)，就(jiu)需要使用(yong)單相(xiang)(xiang)電(dian)容(rong)(rong)(rong)器(qi)(qi)(qi)。

2、電力電容器常見的型號

在(zai)(zai)供(gong)電(dian)(dian)系(xi)統中(zhong)，我們經常會看到以下電(dian)(dian)力電(dian)(dian)容(rong)(rong)(rong)器(qi)型號。BZMJ系(xi)列(lie)電(dian)(dian)容(rong)(rong)(rong)器(qi)，代(dai)表油式介質的(de)并聯(lian)電(dian)(dian)容(rong)(rong)(rong)器(qi)，幾乎被市場淘汰；BKMJ系(xi)列(lie)電(dian)(dian)容(rong)(rong)(rong)器(qi)，代(dai)表干式硅油介質的(de)并聯(lian)電(dian)(dian)容(rong)(rong)(rong)器(qi)，它(ta)在(zai)(zai)電(dian)(dian)網中(zhong)應用較多；BSMJ系(xi)列(lie)電(dian)(dian)容(rong)(rong)(rong)器(qi)，代(dai)表微晶蠟填充(chong)的(de)并聯(lian)電(dian)(dian)容(rong)(rong)(rong)器(qi)，市場中(zhong)有(you)不少企業在(zai)(zai)使用；AKMJ/ASMJ系(xi)列(lie)電(dian)(dian)容(rong)(rong)(rong)器(qi)，代(dai)表硅油/微晶蠟填充(chong)的(de)濾(lv)波(bo)電(dian)(dian)容(rong)(rong)(rong)器(qi)，它(ta)們可以在(zai)(zai)有(you)諧(xie)波(bo)的(de)場景(jing)中(zhong)使用。

二、電力電容器接線方式

1、星形接線方式

在(zai)電力系統中(zhong)，星形(xing)接線(xian)可(ke)分為帶(dai)中(zhong)性(xing)線(xian)和不帶(dai)中(zhong)性(xing)線(xian)兩種情況。其(qi)(qi)中(zhong)帶(dai)中(zhong)性(xing)線(xian)方(fang)式的優勢在(zai)于可(ke)以進行分相(xiang)投切，從而(er)補償電網負荷(he)的三(san)相(xiang)不平衡(heng)。對于不帶(dai)中(zhong)性(xing)線(xian)方(fang)式來說，其(qi)(qi)需要兩相(xiang)電容才能形(xing)成(cheng)回路。和星形(xing)帶(dai)中(zhong)性(xing)線(xian)方(fang)式相(xiang)同(tong)的是，它們的三(san)相(xiang)基(ji)波電壓對稱，所以三(san)相(xiang)基(ji)波電流(liu)(liu)合成(cheng)值(zhi)為零；而(er)3次諧波電流(liu)(liu)則由線(xian)電壓決(jue)定，三(san)相(xiang)電壓的3次諧波大小相(xiang)等(deng)，方(fang)向(xiang)相(xiang)同(tong)，在(zai)線(xian)電壓中(zhong)相(xiang)互抵消，因(yin)此(ci)電容支路中(zhong)沒有3次諧波電流(liu)(liu)。

2、三角形接線

在(zai)電力(li)系(xi)統中，三(san)(san)角(jiao)形(xing)(xing)(xing)(xing)接法按照(zhao)星形(xing)(xing)(xing)(xing)三(san)(san)角(jiao)形(xing)(xing)(xing)(xing)變換原理，可(ke)以轉化為星形(xing)(xing)(xing)(xing)接線。當電力(li)系(xi)統中存在(zai)三(san)(san)相不(bu)平衡的(de)(de)負(fu)載時，可(ke)令各相電容(rong)值不(bu)等，根據各相負(fu)荷進行分相補償(chang)。在(zai)電力(li)補償(chang)電容(rong)器(qi)總(zong)無(wu)功容(rong)量相等的(de)(de)情(qing)況下，三(san)(san)角(jiao)形(xing)(xing)(xing)(xing)接線和星形(xing)(xing)(xing)(xing)無(wu)中性(xing)線方式度外電路表(biao)示(shi)的(de)(de)特性(xing)相同。在(zai)實際進行無(wu)功補償(chang)時，企業采用三(san)(san)角(jiao)形(xing)(xing)(xing)(xing)接線方式更多。

星形接線和三角形接線，是品牌電力電容器常見的(de)(de)接(jie)線(xian)方式(shi)(shi)。目前企業(ye)常用的(de)(de)接(jie)線(xian)方式(shi)(shi)是三(san)角形接(jie)線(xian)，因(yin)為它可以實現分相補償，解決三(san)相不(bu)平衡(heng)的(de)(de)問題。