一、電力電容器常見的規格和型號

1、電力電容器的規格

（1）額定電壓：電容(rong)(rong)(rong)器有(you)高壓電容(rong)(rong)(rong)器、低壓電容(rong)(rong)(rong)器之分。以低壓電容(rong)(rong)(rong)器為(wei)例，常見額定電壓等(deng)級有(you)250V、440V、480V、525V、690V等(deng)。

（2）額(e)定容(rong)量：電力電容(rong)器的額(e)定容(rong)量，一(yi)般在10Kvar-60Kvar之間。常見的額(e)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)器(qi)(qi)有三(san)相電容(rong)器(qi)(qi)和單相電容(rong)器(qi)(qi)。進(jin)行無(wu)功補償(chang)的(de)電力電容(rong)器(qi)(qi)，多為三(san)相電容(rong)器(qi)(qi)。當(dang)企業需要進(jin)行分相補償(chang)時，就需要使用(yong)單相電容(rong)器(qi)(qi)。

2、電力電容器常見的型號

在(zai)供電(dian)(dian)(dian)系(xi)統中(zhong)，我(wo)們(men)經(jing)常會看到(dao)以(yi)下電(dian)(dian)(dian)力電(dian)(dian)(dian)容(rong)器(qi)(qi)型號。BZMJ系(xi)列(lie)電(dian)(dian)(dian)容(rong)器(qi)(qi)，代(dai)表(biao)油式(shi)介質(zhi)的(de)并(bing)(bing)(bing)聯(lian)(lian)電(dian)(dian)(dian)容(rong)器(qi)(qi)，幾乎被市(shi)場(chang)淘(tao)汰；BKMJ系(xi)列(lie)電(dian)(dian)(dian)容(rong)器(qi)(qi)，代(dai)表(biao)干式(shi)硅(gui)油介質(zhi)的(de)并(bing)(bing)(bing)聯(lian)(lian)電(dian)(dian)(dian)容(rong)器(qi)(qi)，它在(zai)電(dian)(dian)(dian)網(wang)中(zhong)應用較多(duo)；BSMJ系(xi)列(lie)電(dian)(dian)(dian)容(rong)器(qi)(qi)，代(dai)表(biao)微晶蠟填充(chong)的(de)并(bing)(bing)(bing)聯(lian)(lian)電(dian)(dian)(dian)容(rong)器(qi)(qi)，市(shi)場(chang)中(zhong)有不少企業在(zai)使(shi)(shi)用；AKMJ/ASMJ系(xi)列(lie)電(dian)(dian)(dian)容(rong)器(qi)(qi)，代(dai)表(biao)硅(gui)油/微晶蠟填充(chong)的(de)濾(lv)波電(dian)(dian)(dian)容(rong)器(qi)(qi)，它們(men)可(ke)以(yi)在(zai)有諧(xie)波的(de)場(chang)景(jing)中(zhong)使(shi)(shi)用。

二、電力電容器接線方式

1、星形接線方式

在電(dian)(dian)(dian)力系統中(zhong)(zhong)(zhong)，星形(xing)接線(xian)(xian)可分(fen)為帶中(zhong)(zhong)(zhong)性線(xian)(xian)和不(bu)帶中(zhong)(zhong)(zhong)性線(xian)(xian)兩(liang)種情況。其中(zhong)(zhong)(zhong)帶中(zhong)(zhong)(zhong)性線(xian)(xian)方(fang)式的(de)(de)(de)優勢在于(yu)可以進(jin)行(xing)分(fen)相(xiang)(xiang)(xiang)(xiang)(xiang)投切，從而補(bu)償電(dian)(dian)(dian)網負(fu)荷的(de)(de)(de)三相(xiang)(xiang)(xiang)(xiang)(xiang)不(bu)平(ping)衡。對(dui)于(yu)不(bu)帶中(zhong)(zhong)(zhong)性線(xian)(xian)方(fang)式來說(shuo)，其需要兩(liang)相(xiang)(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)容才(cai)能形(xing)成回路。和星形(xing)帶中(zhong)(zhong)(zhong)性線(xian)(xian)方(fang)式相(xiang)(xiang)(xiang)(xiang)(xiang)同(tong)的(de)(de)(de)是，它們的(de)(de)(de)三相(xiang)(xiang)(xiang)(xiang)(xiang)基(ji)波(bo)電(dian)(dian)(dian)壓對(dui)稱，所以三相(xiang)(xiang)(xiang)(xiang)(xiang)基(ji)波(bo)電(dian)(dian)(dian)流合成值為零；而3次諧(xie)波(bo)電(dian)(dian)(dian)流則由(you)線(xian)(xian)電(dian)(dian)(dian)壓決定(ding)，三相(xiang)(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓的(de)(de)(de)3次諧(xie)波(bo)大小相(xiang)(xiang)(xiang)(xiang)(xiang)等，方(fang)向相(xiang)(xiang)(xiang)(xiang)(xiang)同(tong)，在線(xian)(xian)電(dian)(dian)(dian)壓中(zhong)(zhong)(zhong)相(xiang)(xiang)(xiang)(xiang)(xiang)互抵消，因此電(dian)(dian)(dian)容支路中(zhong)(zhong)(zhong)沒有3次諧(xie)波(bo)電(dian)(dian)(dian)流。

2、三角形接線

在電(dian)力系統中(zhong)，三(san)(san)角(jiao)形(xing)(xing)(xing)接法按(an)照星(xing)(xing)形(xing)(xing)(xing)三(san)(san)角(jiao)形(xing)(xing)(xing)變換(huan)原理，可以轉(zhuan)化(hua)為星(xing)(xing)形(xing)(xing)(xing)接線(xian)(xian)。當(dang)電(dian)力系統中(zhong)存在三(san)(san)相(xiang)不(bu)平衡的(de)負載時，可令各相(xiang)電(dian)容(rong)值不(bu)等，根據各相(xiang)負荷進行分相(xiang)補(bu)償。在電(dian)力補(bu)償電(dian)容(rong)器總(zong)無(wu)(wu)功容(rong)量相(xiang)等的(de)情況(kuang)下，三(san)(san)角(jiao)形(xing)(xing)(xing)接線(xian)(xian)和星(xing)(xing)形(xing)(xing)(xing)無(wu)(wu)中(zhong)性(xing)線(xian)(xian)方式度(du)外電(dian)路表示的(de)特(te)性(xing)相(xiang)同(tong)。在實際進行無(wu)(wu)功補(bu)償時，企業采用三(san)(san)角(jiao)形(xing)(xing)(xing)接線(xian)(xian)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)接(jie)線(xian)方式。目前企業(ye)常用的(de)接(jie)線(xian)方式是(shi)三(san)角形(xing)接(jie)線(xian)，因為它可以實現分(fen)相(xiang)補(bu)償，解決三(san)相(xiang)不平衡的(de)問題(ti)。