配電房為什么要使用配電補償箱？

答：提(ti)(ti)高(gao)功率(lv)(lv)因(yin)素的作用(yong)。打個比方，種子(zi)(zi)的發芽率(lv)(lv)，一百(bai)(bai)斤(jin)種子(zi)(zi)如果(guo)發芽率(lv)(lv)是(shi)百(bai)(bai)分之九十五，那(nei)么還有(you)百(bai)(bai)分之五沒有(you)用(yong)的，不能(neng)發芽，供(gong)電(dian)(dian)(dian)局為(wei)了提(ti)(ti)高(gao)電(dian)(dian)(dian)的利用(yong)率(lv)(lv)，就(jiu)要求(qiu)配電(dian)(dian)(dian)房使(shi)用(yong)電(dian)(dian)(dian)容(rong)補償(chang)，來提(ti)(ti)高(gao)功率(lv)(lv)因(yin)素，種子(zi)(zi)的發芽率(lv)(lv)就(jiu)好比功率(lv)(lv)因(yin)素，提(ti)(ti)高(gao)了功率(lv)(lv)因(yin)素，就(jiu)提(ti)(ti)高(gao)了電(dian)(dian)(dian)的利用(yong)率(lv)(lv)，不至(zhi)于能(neng)源在使(shi)用(yong)時(shi)白白浪費。

配電室加(jia)入電容補償是為了進行無功補償，提高(gao)功率因數。

電(dian)(dian)力系(xi)統的(de)用(yong)(yong)電(dian)(dian)設備在使用(yong)(yong)時(shi)會產(chan)生(sheng)有(you)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率和無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率。有(you)功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率把電(dian)(dian)能轉變(bian)為(wei)機械(xie)能、熱(re)能、化(hua)學能或聲能；無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率把電(dian)(dian)能轉換為(wei)另一種形式的(de)能，如電(dian)(dian)磁元(yuan)件建(jian)立磁場占用(yong)(yong)的(de)電(dian)(dian)能。

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，提高供(gong)電(dian)(dian)(dian)效率，改(gai)善供(gong)電(dian)(dian)(dian)環境，需要進行無(wu)功(gong)補償。無(wu)功(gong)補償通過(guo)把具有容性功(gong)率負荷的(de)(de)裝(zhuang)置與(yu)感性功(gong)率負荷并聯(lian)接在同一電(dian)(dian)(dian)路實現(xian)。電(dian)(dian)(dian)力系統用電(dian)(dian)(dian)設備通常是(shi)感性的(de)(de)，故適當(dang)地并聯(lian)電(dian)(dian)(dian)容即可實現(xian)無(wu)功(gong)補償。