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(rong)(rong)器(qi)有高壓(ya)(ya)電(dian)(dian)容(rong)(rong)器(qi)、低(di)壓(ya)(ya)電(dian)(dian)容(rong)(rong)器(qi)之(zhi)分(fen)。以(yi)低(di)壓(ya)(ya)電(dian)(dian)容(rong)(rong)器(qi)為例，常(chang)見額定電(dian)(dian)壓(ya)(ya)等(deng)級有250V、440V、480V、525V、690V等(deng)。

（2）額定容(rong)量：電力(li)電容(rong)器的(de)額定容(rong)量，一般在10Kvar-60Kvar之間。常(chang)見(jian)的(de)額定容(rong)量有10Kvar、15Kvar、20Kvar、25Kvar、30Kvar、40Kvar、50Kvar、60Kvar等。

（3）相數：電力系統中，電容(rong)(rong)器(qi)有三(san)相電容(rong)(rong)器(qi)和(he)單相電容(rong)(rong)器(qi)。進行無功補(bu)償的(de)電力電容(rong)(rong)器(qi)，多(duo)為三(san)相電容(rong)(rong)器(qi)。當企業(ye)需要(yao)進行分相補(bu)償時，就需要(yao)使(shi)用單相電容(rong)(rong)器(qi)。

2、電力電容器常見的型號

在供電(dian)系統(tong)中(zhong)，我(wo)們(men)經常會看到以下電(dian)力電(dian)容(rong)器(qi)型號(hao)。BZMJ系列電(dian)容(rong)器(qi)，代(dai)(dai)表油(you)式(shi)介質(zhi)的(de)(de)并(bing)聯電(dian)容(rong)器(qi)，幾(ji)乎被(bei)市(shi)場(chang)(chang)淘汰；BKMJ系列電(dian)容(rong)器(qi)，代(dai)(dai)表干式(shi)硅油(you)介質(zhi)的(de)(de)并(bing)聯電(dian)容(rong)器(qi)，它(ta)在電(dian)網中(zhong)應用較多；BSMJ系列電(dian)容(rong)器(qi)，代(dai)(dai)表微晶蠟填(tian)充的(de)(de)并(bing)聯電(dian)容(rong)器(qi)，市(shi)場(chang)(chang)中(zhong)有不少企業(ye)在使(shi)用；AKMJ/ASMJ系列電(dian)容(rong)器(qi)，代(dai)(dai)表硅油(you)/微晶蠟填(tian)充的(de)(de)濾波(bo)電(dian)容(rong)器(qi)，它(ta)們(men)可以在有諧(xie)波(bo)的(de)(de)場(chang)(chang)景中(zhong)使(shi)用。

二、電力電容器接線方式

1、星形接線方式

在電(dian)(dian)(dian)(dian)力系統中(zhong)(zhong)(zhong)(zhong)(zhong)，星形接線(xian)可分(fen)為帶中(zhong)(zhong)(zhong)(zhong)(zhong)性線(xian)和(he)不(bu)帶中(zhong)(zhong)(zhong)(zhong)(zhong)性線(xian)兩(liang)種情況(kuang)。其(qi)中(zhong)(zhong)(zhong)(zhong)(zhong)帶中(zhong)(zhong)(zhong)(zhong)(zhong)性線(xian)方式(shi)的(de)(de)優勢在于可以進行分(fen)相(xiang)(xiang)投切，從而補償電(dian)(dian)(dian)(dian)網負荷的(de)(de)三相(xiang)(xiang)不(bu)平衡(heng)。對于不(bu)帶中(zhong)(zhong)(zhong)(zhong)(zhong)性線(xian)方式(shi)來說，其(qi)需要兩(liang)相(xiang)(xiang)電(dian)(dian)(dian)(dian)容(rong)才(cai)能形成回路。和(he)星形帶中(zhong)(zhong)(zhong)(zhong)(zhong)性線(xian)方式(shi)相(xiang)(xiang)同的(de)(de)是，它們的(de)(de)三相(xiang)(xiang)基波(bo)電(dian)(dian)(dian)(dian)壓(ya)對稱(cheng)，所以三相(xiang)(xiang)基波(bo)電(dian)(dian)(dian)(dian)流合成值為零；而3次諧(xie)波(bo)電(dian)(dian)(dian)(dian)流則(ze)由線(xian)電(dian)(dian)(dian)(dian)壓(ya)決定，三相(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)3次諧(xie)波(bo)大小相(xiang)(xiang)等，方向(xiang)相(xiang)(xiang)同，在線(xian)電(dian)(dian)(dian)(dian)壓(ya)中(zhong)(zhong)(zhong)(zhong)(zhong)相(xiang)(xiang)互抵(di)消，因此電(dian)(dian)(dian)(dian)容(rong)支路中(zhong)(zhong)(zhong)(zhong)(zhong)沒有3次諧(xie)波(bo)電(dian)(dian)(dian)(dian)流。

2、三角形接線

在(zai)電(dian)(dian)力系(xi)統(tong)中，三(san)(san)角(jiao)(jiao)形(xing)(xing)(xing)接(jie)法(fa)按照星(xing)形(xing)(xing)(xing)三(san)(san)角(jiao)(jiao)形(xing)(xing)(xing)變(bian)換原理，可(ke)以轉化為星(xing)形(xing)(xing)(xing)接(jie)線。當電(dian)(dian)力系(xi)統(tong)中存在(zai)三(san)(san)相(xiang)(xiang)不平衡的負(fu)載時，可(ke)令各相(xiang)(xiang)電(dian)(dian)容值不等，根據(ju)各相(xiang)(xiang)負(fu)荷進行(xing)分相(xiang)(xiang)補(bu)償。在(zai)電(dian)(dian)力補(bu)償電(dian)(dian)容器(qi)總(zong)無功容量相(xiang)(xiang)等的情況(kuang)下，三(san)(san)角(jiao)(jiao)形(xing)(xing)(xing)接(jie)線和星(xing)形(xing)(xing)(xing)無中性線方式度外電(dian)(dian)路表示的特性相(xiang)(xiang)同。在(zai)實際進行(xing)無功補(bu)償時，企業采用三(san)(san)角(jiao)(jiao)形(xing)(xing)(xing)接(jie)線方式更多。

星形接線和三角形接線，是品牌電力電容器常(chang)見的(de)(de)(de)接(jie)(jie)線方(fang)式。目前(qian)企業(ye)常(chang)用的(de)(de)(de)接(jie)(jie)線方(fang)式是三角形接(jie)(jie)線，因為它可以實現分相補償(chang)，解決三相不平衡的(de)(de)(de)問題。