配電房為什么要使用配電補償箱？

答：提高(gao)功(gong)率(lv)因(yin)素(su)的作用(yong)(yong)。打個比方，種(zhong)(zhong)(zhong)子(zi)的發(fa)芽(ya)率(lv)，一百(bai)(bai)斤種(zhong)(zhong)(zhong)子(zi)如果發(fa)芽(ya)率(lv)是百(bai)(bai)分之(zhi)九十(shi)五，那么還有百(bai)(bai)分之(zhi)五沒有用(yong)(yong)的，不(bu)能發(fa)芽(ya)，供電(dian)(dian)局為了(le)提高(gao)電(dian)(dian)的利(li)用(yong)(yong)率(lv)，就(jiu)要求(qiu)配電(dian)(dian)房使(shi)用(yong)(yong)電(dian)(dian)容(rong)補償(chang)，來提高(gao)功(gong)率(lv)因(yin)素(su)，種(zhong)(zhong)(zhong)子(zi)的發(fa)芽(ya)率(lv)就(jiu)好比功(gong)率(lv)因(yin)素(su)，提高(gao)了(le)功(gong)率(lv)因(yin)素(su)，就(jiu)提高(gao)了(le)電(dian)(dian)的利(li)用(yong)(yong)率(lv)，不(bu)至于能源在使(shi)用(yong)(yong)時(shi)白白浪(lang)費。

配電室加入(ru)電容(rong)補償是為了進行無功補償，提高功率因數。

電力系統的(de)用電設備在(zai)使用時會產生有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率和(he)無功(gong)(gong)(gong)功(gong)(gong)(gong)率。有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率把電能(neng)(neng)轉變(bian)為機械能(neng)(neng)、熱能(neng)(neng)、化學能(neng)(neng)或聲能(neng)(neng)；無功(gong)(gong)(gong)功(gong)(gong)(gong)率把電能(neng)(neng)轉換(huan)為另一(yi)種形(xing)式的(de)能(neng)(neng)，如電磁元件建立(li)磁場占用的(de)電能(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(jian)少(shao)損(sun)耗，提(ti)高供電(dian)(dian)效率(lv)，改(gai)善供電(dian)(dian)環境，需要進行(xing)無(wu)功(gong)補(bu)償。無(wu)功(gong)補(bu)償通過把具有容性功(gong)率(lv)負(fu)荷的裝置與(yu)感(gan)(gan)性功(gong)率(lv)負(fu)荷并聯接在同一電(dian)(dian)路實(shi)現(xian)。電(dian)(dian)力系統用電(dian)(dian)設備通常是(shi)感(gan)(gan)性的，故(gu)適當地并聯電(dian)(dian)容即(ji)可實(shi)現(xian)無(wu)功(gong)補(bu)償。