配電房為什么要使用配電補償箱？

答：提高功率(lv)(lv)(lv)因素(su)(su)的(de)(de)作(zuo)用(yong)。打個比(bi)方，種(zhong)子的(de)(de)發芽(ya)率(lv)(lv)(lv)，一(yi)百斤種(zhong)子如果發芽(ya)率(lv)(lv)(lv)是百分(fen)之(zhi)九十五(wu)，那(nei)么還有百分(fen)之(zhi)五(wu)沒(mei)有用(yong)的(de)(de)，不能發芽(ya)，供(gong)電(dian)(dian)局為了提高電(dian)(dian)的(de)(de)利用(yong)率(lv)(lv)(lv)，就要求(qiu)配電(dian)(dian)房(fang)使(shi)用(yong)電(dian)(dian)容補償，來(lai)提高功率(lv)(lv)(lv)因素(su)(su)，種(zhong)子的(de)(de)發芽(ya)率(lv)(lv)(lv)就好比(bi)功率(lv)(lv)(lv)因素(su)(su)，提高了功率(lv)(lv)(lv)因素(su)(su)，就提高了電(dian)(dian)的(de)(de)利用(yong)率(lv)(lv)(lv)，不至于能源在使(shi)用(yong)時白(bai)白(bai)浪費。

配電室加入(ru)電容補償(chang)是(shi)為(wei)了(le)進(jin)行無功(gong)補償(chang)，提高(gao)功(gong)率因(yin)數。

電(dian)(dian)力系統的用電(dian)(dian)設備在(zai)使用時會產生有功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)和無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)。有功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)把電(dian)(dian)能(neng)(neng)轉(zhuan)變為(wei)機械能(neng)(neng)、熱能(neng)(neng)、化學能(neng)(neng)或聲能(neng)(neng)；無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)把電(dian)(dian)能(neng)(neng)轉(zhuan)換為(wei)另(ling)一種形式的能(neng)(neng)，如電(dian)(dian)磁(ci)元件(jian)建立(li)磁(ci)場占用的電(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(shao)損耗，提高供電(dian)(dian)(dian)效率，改(gai)善(shan)供電(dian)(dian)(dian)環(huan)境(jing)，需要進行無功(gong)補償。無功(gong)補償通過(guo)把具有容性(xing)功(gong)率負(fu)(fu)荷的裝置與感性(xing)功(gong)率負(fu)(fu)荷并聯接在(zai)同一電(dian)(dian)(dian)路實現。電(dian)(dian)(dian)力系統(tong)用電(dian)(dian)(dian)設(she)備通常(chang)是感性(xing)的，故適當地并聯電(dian)(dian)(dian)容即可實現無功(gong)補償。