配電房為什么要使用配電補償箱？

答(da)：提(ti)(ti)高(gao)功(gong)率(lv)(lv)因素(su)(su)的(de)作用(yong)(yong)。打個比(bi)方，種(zhong)子的(de)發(fa)(fa)芽(ya)(ya)率(lv)(lv)，一百(bai)(bai)斤種(zhong)子如果發(fa)(fa)芽(ya)(ya)率(lv)(lv)是百(bai)(bai)分(fen)之九十五(wu)，那么還有百(bai)(bai)分(fen)之五(wu)沒有用(yong)(yong)的(de)，不(bu)能發(fa)(fa)芽(ya)(ya)，供電局為了提(ti)(ti)高(gao)電的(de)利用(yong)(yong)率(lv)(lv)，就(jiu)要求配電房(fang)使用(yong)(yong)電容(rong)補(bu)償(chang)，來提(ti)(ti)高(gao)功(gong)率(lv)(lv)因素(su)(su)，種(zhong)子的(de)發(fa)(fa)芽(ya)(ya)率(lv)(lv)就(jiu)好比(bi)功(gong)率(lv)(lv)因素(su)(su)，提(ti)(ti)高(gao)了功(gong)率(lv)(lv)因素(su)(su)，就(jiu)提(ti)(ti)高(gao)了電的(de)利用(yong)(yong)率(lv)(lv)，不(bu)至于能源(yuan)在使用(yong)(yong)時(shi)白白浪(lang)費。

配電室加入電容補(bu)償是為了進行無功(gong)補(bu)償，提高功(gong)率(lv)因數。

電(dian)(dian)力(li)系統的(de)用電(dian)(dian)設備在(zai)使用時會產生有(you)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)和無(wu)(wu)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)。有(you)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)把電(dian)(dian)能(neng)轉(zhuan)變為機械能(neng)、熱(re)能(neng)、化學能(neng)或聲能(neng)；無(wu)(wu)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)把電(dian)(dian)能(neng)轉(zhuan)換為另一種形式的(de)能(neng)，如電(dian)(dian)磁元件建立(li)磁場占用的(de)電(dian)(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。

為了減(jian)少損耗，提高供電效率(lv)，改善供電環境，需要進行無功補(bu)償(chang)。無功補(bu)償(chang)通(tong)過(guo)把(ba)具有容(rong)性(xing)功率(lv)負荷(he)的(de)(de)裝置與(yu)感(gan)(gan)性(xing)功率(lv)負荷(he)并(bing)聯(lian)接(jie)在同一電路實現。電力系(xi)統用(yong)電設備通(tong)常是感(gan)(gan)性(xing)的(de)(de)，故適當地(di)并(bing)聯(lian)電容(rong)即可實現無功補(bu)償(chang)。