配電房為什么要使用配電補償箱？

答：提(ti)高(gao)功率(lv)(lv)因素的(de)作用。打(da)個比方，種(zhong)子(zi)的(de)發芽(ya)率(lv)(lv)，一百(bai)斤(jin)種(zhong)子(zi)如果發芽(ya)率(lv)(lv)是百(bai)分之九(jiu)十五，那么還有百(bai)分之五沒(mei)有用的(de)，不能(neng)發芽(ya)，供(gong)電(dian)(dian)局為了提(ti)高(gao)電(dian)(dian)的(de)利用率(lv)(lv)，就要求配電(dian)(dian)房使用電(dian)(dian)容補償，來(lai)提(ti)高(gao)功率(lv)(lv)因素，種(zhong)子(zi)的(de)發芽(ya)率(lv)(lv)就好比功率(lv)(lv)因素，提(ti)高(gao)了功率(lv)(lv)因素，就提(ti)高(gao)了電(dian)(dian)的(de)利用率(lv)(lv)，不至于能(neng)源在使用時(shi)白白浪費。

配電(dian)室加入(ru)電(dian)容(rong)補償是為了進行無(wu)功(gong)(gong)補償，提高功(gong)(gong)率因數。

電(dian)(dian)(dian)力(li)系統的(de)用電(dian)(dian)(dian)設備在使用時(shi)會產(chan)生有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)和無(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)。有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)把電(dian)(dian)(dian)能(neng)(neng)轉(zhuan)變為機械能(neng)(neng)、熱能(neng)(neng)、化學能(neng)(neng)或(huo)聲能(neng)(neng)；無(wu)(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)把電(dian)(dian)(dian)能(neng)(neng)轉(zhuan)換(huan)為另一種形式(shi)的(de)能(neng)(neng)，如(ru)電(dian)(dian)(dian)磁(ci)元件建立磁(ci)場占(zhan)用的(de)電(dian)(dian)(dian)能(neng)(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。

為了減少損耗(hao)，提高供電效(xiao)率(lv)，改善(shan)供電環境，需要(yao)進行(xing)無(wu)功補償(chang)。無(wu)功補償(chang)通(tong)(tong)過把具有容(rong)性(xing)功率(lv)負(fu)荷的裝置(zhi)與感性(xing)功率(lv)負(fu)荷并聯接在同一電路(lu)實現。電力(li)系統用電設備通(tong)(tong)常是感性(xing)的，故(gu)適當地并聯電容(rong)即可(ke)實現無(wu)功補償(chang)。