電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)容(rong)器無(wu)(wu)功(gong)補償裝(zhuang)置具有安(an)裝(zhuang)方(fang)(fang)便，安(an)裝(zhuang)地(di)點增減方(fang)(fang)便；有功(gong)損耗(hao)小(僅為額定容(rong)量(liang)的0.4 %左右);建設周期短(duan)；投資小；無(wu)(wu)旋轉(zhuan)部件，運行(xing)維護簡便；個(ge)別(bie)電(dian)(dian)(dian)(dian)容(rong)器組損壞，不(bu)影(ying)響整(zheng)個(ge)電(dian)(dian)(dian)(dian)容(rong)器組運行(xing)等(deng)優點。高壓分散(san)補償實際就(jiu)是在單(dan)臺變壓器高壓側安(an)裝(zhuang)的，用(yong)以(yi)改善電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓質(zhi)量(liang)的無(wu)(wu)功(gong)補償電(dian)(dian)(dian)(dian)容(rong)器。其主要用(yong)于城市高壓配電(dian)(dian)(dian)(dian)中。

汽(qi)車(che)焊接車(che)間無功(gong)補(bu)償元件解(jie)決方案

選擇電(dian)容器(qi)組(zu)的控(kong)制方(fang)式：（1）電(dian)容補(bu)償(chang)容量≤ 15% Sn（變壓器(qi)容量），可以采(cai)用定值補(bu)償(chang)：無(wu)需(xu)調節，連接一個(ge)定值電(dian)容器(qi)組(zu)即可；（2）電(dian)容補(bu)償(chang)容量> 15% Sn （變壓器(qi)容量），可采(cai)用自動調節補(bu)償(chang)：電(dian)容器(qi)分多(duo)步投(tou)切，達到所(suo)需(xu)要(yao)求(qiu)。

補償電(dian)(dian)容(rong)(rong)器(qi)(qi)的(de)總容(rong)(rong)量(liang)恰好(hao)等(deng)于(yu)負(fu)荷中的(de)電(dian)(dian)感總容(rong)(rong)量(liang)，只(zhi)是由(you)于(yu)恰當(dang)地選擇了(le)電(dian)(dian)容(rong)(rong)器(qi)(qi)的(de)接法(fa)，不僅使三(san)相(xiang)的(de)電(dian)(dian)流平衡(heng)，并且三(san)相(xiang)的(de)功(gong)率因數均(jun)等(deng)于(yu)1，零線(xian)沒(mei)有電(dian)(dian)流。從圖(tu)中可(ke)以(yi)看出，接在相(xiang)與(yu)相(xiang)之間的(de)電(dian)(dian)容(rong)(rong)器(qi)(qi)是不相(xiang)等(deng)的(de)，因此(ci)可(ke)以(yi)起到既補償無功(gong)又(you)調整不平衡(heng)有功(gong)電(dian)(dian)流的(de)作用，這里利用了(le)Wangs定理2。