配電房為什么要使用配電補償箱？

答(da)：提高(gao)(gao)功(gong)率(lv)(lv)因素的作用。打個(ge)比(bi)方，種(zhong)子的發(fa)芽(ya)率(lv)(lv)，一百斤種(zhong)子如果(guo)發(fa)芽(ya)率(lv)(lv)是百分(fen)之九十五(wu)，那么還有百分(fen)之五(wu)沒(mei)有用的，不能(neng)發(fa)芽(ya)，供電(dian)(dian)(dian)局為了提高(gao)(gao)電(dian)(dian)(dian)的利(li)用率(lv)(lv)，就要求配電(dian)(dian)(dian)房使(shi)用電(dian)(dian)(dian)容補償，來提高(gao)(gao)功(gong)率(lv)(lv)因素，種(zhong)子的發(fa)芽(ya)率(lv)(lv)就好比(bi)功(gong)率(lv)(lv)因素，提高(gao)(gao)了功(gong)率(lv)(lv)因素，就提高(gao)(gao)了電(dian)(dian)(dian)的利(li)用率(lv)(lv)，不至于能(neng)源在使(shi)用時白白浪費(fei)。

配電(dian)室(shi)加入電(dian)容(rong)補(bu)償是(shi)為了進行無功(gong)補(bu)償，提高功(gong)率因(yin)數。

電(dian)力(li)系統的用(yong)電(dian)設備在使用(yong)時(shi)會產生有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率和無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率。有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率把(ba)電(dian)能(neng)(neng)(neng)轉(zhuan)變為機械(xie)能(neng)(neng)(neng)、熱能(neng)(neng)(neng)、化學能(neng)(neng)(neng)或聲能(neng)(neng)(neng)；無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率把(ba)電(dian)能(neng)(neng)(neng)轉(zhuan)換為另一種形式的能(neng)(neng)(neng)，如(ru)電(dian)磁(ci)元(yuan)件建立磁(ci)場占用(yong)的電(dian)能(neng)(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(wei)了減少(shao)損(sun)耗，提高供電(dian)(dian)(dian)效率(lv)，改善供電(dian)(dian)(dian)環(huan)境，需要(yao)進行無(wu)功補(bu)償。無(wu)功補(bu)償通過把具有容性(xing)功率(lv)負荷(he)的裝置與(yu)感性(xing)功率(lv)負荷(he)并聯(lian)接在同一電(dian)(dian)(dian)路實現。電(dian)(dian)(dian)力系統用(yong)電(dian)(dian)(dian)設備通常是(shi)感性(xing)的，故適當地并聯(lian)電(dian)(dian)(dian)容即可實現無(wu)功補(bu)償。