配電房為什么要使用配電補償箱？

答：提(ti)(ti)(ti)高(gao)(gao)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)因素的(de)(de)作用(yong)(yong)(yong)。打個比方，種子的(de)(de)發(fa)芽(ya)率(lv)(lv)(lv)(lv)，一百斤種子如果發(fa)芽(ya)率(lv)(lv)(lv)(lv)是百分之九十(shi)五(wu)，那么(me)還有百分之五(wu)沒(mei)有用(yong)(yong)(yong)的(de)(de)，不能發(fa)芽(ya)，供電局為了提(ti)(ti)(ti)高(gao)(gao)電的(de)(de)利(li)用(yong)(yong)(yong)率(lv)(lv)(lv)(lv)，就(jiu)(jiu)要求配電房使(shi)用(yong)(yong)(yong)電容補償，來提(ti)(ti)(ti)高(gao)(gao)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)因素，種子的(de)(de)發(fa)芽(ya)率(lv)(lv)(lv)(lv)就(jiu)(jiu)好比功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)因素，提(ti)(ti)(ti)高(gao)(gao)了功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)因素，就(jiu)(jiu)提(ti)(ti)(ti)高(gao)(gao)了電的(de)(de)利(li)用(yong)(yong)(yong)率(lv)(lv)(lv)(lv)，不至于能源在使(shi)用(yong)(yong)(yong)時白(bai)白(bai)浪費。

配電(dian)(dian)室加入(ru)電(dian)(dian)容補償是(shi)為了進行(xing)無功補償，提高功率因數。

電(dian)力(li)系統的(de)用電(dian)設備在使用時會產(chan)生(sheng)有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)和無功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)。有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)把電(dian)能(neng)轉變為(wei)機(ji)械能(neng)、熱能(neng)、化(hua)學能(neng)或聲能(neng)；無功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)把電(dian)能(neng)轉換為(wei)另(ling)一種(zhong)形式的(de)能(neng)，如電(dian)磁元件建(jian)立磁場(chang)占用的(de)電(dian)能(neng)。

無功功率過大，會導致功率因數降低，供電變壓器及輸送線路的損耗增大，供電效率變低。因而國家對各變電站、重要負荷等電網節點的無功功率和功率因數有嚴格的規定。

為(wei)了減少損耗，提(ti)高供電(dian)(dian)(dian)效率(lv)，改(gai)善供電(dian)(dian)(dian)環境，需要進行無功(gong)補償。無功(gong)補償通過把具有容(rong)性(xing)功(gong)率(lv)負荷(he)的裝置(zhi)與感性(xing)功(gong)率(lv)負荷(he)并聯(lian)(lian)接在同一電(dian)(dian)(dian)路實(shi)現。電(dian)(dian)(dian)力系統用電(dian)(dian)(dian)設(she)備通常是感性(xing)的，故適當地并聯(lian)(lian)電(dian)(dian)(dian)容(rong)即可(ke)實(shi)現無功(gong)補償。