一、電力電容器接線方式有哪幾種

1、星形接線方式

在(zai)(zai)電(dian)(dian)(dian)力系(xi)統中(zhong)(zhong)(zhong)，星(xing)形(xing)接(jie)線(xian)可分為帶(dai)(dai)中(zhong)(zhong)(zhong)性線(xian)和(he)不帶(dai)(dai)中(zhong)(zhong)(zhong)性線(xian)兩(liang)(liang)種情(qing)況。其中(zhong)(zhong)(zhong)帶(dai)(dai)中(zhong)(zhong)(zhong)性線(xian)方(fang)式的(de)(de)優(you)勢在(zai)(zai)于(yu)(yu)可以進行分相(xiang)投切，從而補(bu)償電(dian)(dian)(dian)網負(fu)荷的(de)(de)三相(xiang)不平衡。對(dui)于(yu)(yu)不帶(dai)(dai)中(zhong)(zhong)(zhong)性線(xian)方(fang)式來說，其需要(yao)兩(liang)(liang)相(xiang)電(dian)(dian)(dian)容才(cai)能形(xing)成回路(lu)。和(he)星(xing)形(xing)帶(dai)(dai)中(zhong)(zhong)(zhong)性線(xian)方(fang)式相(xiang)同的(de)(de)是，它(ta)們的(de)(de)三相(xiang)基(ji)波(bo)(bo)電(dian)(dian)(dian)壓(ya)對(dui)稱，所以三相(xiang)基(ji)波(bo)(bo)電(dian)(dian)(dian)流合(he)成值為零；而3次(ci)諧波(bo)(bo)電(dian)(dian)(dian)流則(ze)由線(xian)電(dian)(dian)(dian)壓(ya)決定(ding)，三相(xiang)電(dian)(dian)(dian)壓(ya)的(de)(de)3次(ci)諧波(bo)(bo)大(da)小相(xiang)等，方(fang)向相(xiang)同，在(zai)(zai)線(xian)電(dian)(dian)(dian)壓(ya)中(zhong)(zhong)(zhong)相(xiang)互抵消，因此電(dian)(dian)(dian)容支路(lu)中(zhong)(zhong)(zhong)沒有3次(ci)諧波(bo)(bo)電(dian)(dian)(dian)流。

2、三角形接線

在(zai)電(dian)(dian)力系統(tong)中(zhong)，三(san)角(jiao)形接法按照(zhao)星(xing)形三(san)角(jiao)形變(bian)換原(yuan)理，可以轉化為星(xing)形接線。當電(dian)(dian)力系統(tong)中(zhong)存在(zai)三(san)相(xiang)(xiang)不(bu)平衡(heng)的(de)負載(zai)時，可令各(ge)相(xiang)(xiang)電(dian)(dian)容(rong)(rong)值不(bu)等，根據各(ge)相(xiang)(xiang)負荷進(jin)行分相(xiang)(xiang)補(bu)償(chang)。在(zai)電(dian)(dian)力補(bu)償(chang)電(dian)(dian)容(rong)(rong)器總無(wu)功(gong)容(rong)(rong)量相(xiang)(xiang)等的(de)情況下，三(san)角(jiao)形接線和星(xing)形無(wu)中(zhong)性線方(fang)式(shi)度外(wai)電(dian)(dian)路表(biao)示的(de)特性相(xiang)(xiang)同。在(zai)實際進(jin)行無(wu)功(gong)補(bu)償(chang)時，企業采(cai)用三(san)角(jiao)形接線方(fang)式(shi)更(geng)多。

星(xing)形(xing)接線(xian)和(he)三(san)角形(xing)接線(xian)，是電力(li)補(bu)償電容器(qi)常見的(de)接線(xian)方(fang)式。目前企業常用(yong)的(de)接線(xian)方(fang)式是三(san)角形(xing)接線(xian)，因為它(ta)可以實現分相補(bu)償，解決三(san)相不平衡的(de)問題。

二、電力電容器接線柱怎么接

電(dian)(dian)(dian)力電(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)接(jie)線柱(zhu)一(yi)般有三(san)(san)個，分別標注為U、V、W，分別對應電(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)內(nei)部的(de)三(san)(san)個電(dian)(dian)(dian)極。正確(que)的(de)接(jie)法是U接(jie)在(zai)電(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)內(nei)部的(de)U極，V接(jie)在(zai)內(nei)部的(de)V極，W接(jie)在(zai)內(nei)部的(de)W極上。同時(shi)，還(huan)需要接(jie)地線連接(jie)電(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)本(ben)體和接(jie)線盒之間的(de)金屬橋(qiao)。

三、電力電容器組的接線原則

1、必須確保電容能充分放電

電力電容器組停運檢修時必須保證各個電容器完全放電，才可以最大程度的避免觸電事故的發生。而保證電(dian)(dian)(dian)容充分放電(dian)(dian)(dian)除了需要電(dian)(dian)(dian)容本身設計有一(yi)定的(de)放電(dian)(dian)(dian)裝置(zhi)，使退(tui)出運行后的(de)電(dian)(dian)(dian)力電(dian)(dian)(dian)容殘余電(dian)(dian)(dian)壓不(bu)超過65V，還需要工作人(ren)員檢修前(qian)用接地線再次放電(dian)(dian)(dian)。此外，當電力(li)電容器組超(chao)過1000V時(shi)可以搭配(pei)電壓(ya)互(hu)感(gan)器使用(yong)，通過一次繞組進行再次放電。

2、可與放電裝置直接相連

電力電容器組可以與放電設備設置直接自動接通的接點，中間不用加裝任何開關或熔斷器設備。因為若電容放電回路安裝有熔斷(duan)(duan)器等(deng)器件，當熔斷(duan)(duan)器出現熔斷(duan)(duan)故障需要斷(duan)(duan)開時會對相(xiang)關(guan)操作人員造成安全危(wei)害。

3、電力電容需接地

當電(dian)(dian)(dian)(dian)容(rong)組接(jie)入電(dian)(dian)(dian)(dian)網時，每(mei)臺電(dian)(dian)(dian)(dian)容(rong)都應(ying)對(dui)地(di)絕緣(yuan)(yuan)且絕緣(yuan)(yuan)水平要(yao)高于(yu)(yu)系統額(e)(e)定電(dian)(dian)(dian)(dian)壓(ya)；當電(dian)(dian)(dian)(dian)容(rong)額(e)(e)定電(dian)(dian)(dian)(dian)壓(ya)與電(dian)(dian)(dian)(dian)網標(biao)(biao)稱(cheng)電(dian)(dian)(dian)(dian)壓(ya)相(xiang)同時則需(xu)將電(dian)(dian)(dian)(dian)容(rong)外(wai)殼接(jie)地(di)，若額(e)(e)定電(dian)(dian)(dian)(dian)壓(ya)低(di)于(yu)(yu)供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)網標(biao)(biao)準電(dian)(dian)(dian)(dian)壓(ya)則需(xu)加裝絕緣(yuan)(yuan)支架。

4、電容器組可設單獨的保護裝置

如果想單獨提高某一用電設備的功率因數可以為相關電力電容器組設置(zhi)單獨的控(kong)制(zhi)及保(bao)護(hu)裝置(zhi)。