配電房為什么要使用配電補償箱？

答：提(ti)(ti)高功(gong)(gong)率(lv)(lv)(lv)因素(su)的作用(yong)。打個比方(fang)，種子的發芽(ya)率(lv)(lv)(lv)，一(yi)百斤種子如(ru)果發芽(ya)率(lv)(lv)(lv)是(shi)百分之九十(shi)五，那么還有(you)百分之五沒有(you)用(yong)的，不能發芽(ya)，供電局為(wei)了提(ti)(ti)高電的利用(yong)率(lv)(lv)(lv)，就(jiu)要(yao)求配電房使用(yong)電容補償，來提(ti)(ti)高功(gong)(gong)率(lv)(lv)(lv)因素(su)，種子的發芽(ya)率(lv)(lv)(lv)就(jiu)好(hao)比功(gong)(gong)率(lv)(lv)(lv)因素(su)，提(ti)(ti)高了功(gong)(gong)率(lv)(lv)(lv)因素(su)，就(jiu)提(ti)(ti)高了電的利用(yong)率(lv)(lv)(lv)，不至(zhi)于能源在使用(yong)時白白浪費。

配電(dian)室(shi)加入電(dian)容補償是(shi)為了進(jin)行無功補償，提高功率(lv)因數。

電力系統的(de)用電設備(bei)在使用時會產生有功(gong)(gong)(gong)功(gong)(gong)(gong)率和無功(gong)(gong)(gong)功(gong)(gong)(gong)率。有功(gong)(gong)(gong)功(gong)(gong)(gong)率把電能(neng)轉(zhuan)變為機械能(neng)、熱能(neng)、化學能(neng)或聲能(neng)；無功(gong)(gong)(gong)功(gong)(gong)(gong)率把電能(neng)轉(zhuan)換為另(ling)一種形式的(de)能(neng)，如電磁元件建立磁場占(zhan)用的(de)電能(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。

為了減少損耗，提高供電(dian)效率，改善(shan)供電(dian)環境，需要進行(xing)無功(gong)(gong)補(bu)償(chang)。無功(gong)(gong)補(bu)償(chang)通過把具有容性(xing)功(gong)(gong)率負荷的裝置與感性(xing)功(gong)(gong)率負荷并聯接在同一(yi)電(dian)路實(shi)現(xian)。電(dian)力系統用電(dian)設備通常是感性(xing)的，故適當地并聯電(dian)容即(ji)可實(shi)現(xian)無功(gong)(gong)補(bu)償(chang)。