為了為高壓(ya)開關的閉合(he)機構（如電(dian)磁（CD）閉合機構）提供(gong)電(dian)力(li)，需要大的直(zhi)流電(dian)流，而彈簧儲能（CT）閉合(he)機構不需(xu)要大的DC電流。

只要電(dian)(dian)(dian)(dian)壓(ya)(ya)能(neng)(neng)滿足(zu)儲(chu)能(neng)(neng)電(dian)(dian)(dian)(dian)機的(de)正常運行，它還可以(yi)為(wei)(wei)高壓(ya)(ya)開關頂部的(de)直(zhi)流(liu)小(xiao)母線的(de)信號(hao)、控制(zhi)、報警(jing)等電(dian)(dian)(dian)(dian)路提(ti)(ti)(ti)供(gong)直(zhi)流(liu)電(dian)(dian)(dian)(dian)源。一些(xie)繼電(dian)(dian)(dian)(dian)保護和(he)自(zi)動裝置提(ti)(ti)(ti)供(gong)直(zhi)流(liu)電(dian)(dian)(dian)(dian)源，作為(wei)(wei)操(cao)作電(dian)(dian)(dian)(dian)源和(he)信號(hao)顯(xian)示報警(jing)，為(wei)(wei)更大和(he)更復雜的(de)高壓(ya)(ya)和(he)低壓(ya)(ya)（高壓(ya)(ya)更常用(yong)）配電(dian)(dian)(dian)(dian)系統的(de)自(zi)動或電(dian)(dian)(dian)(dian)氣操(cao)作提(ti)(ti)(ti)供(gong)電(dian)(dian)(dian)(dian)能(neng)(neng)。此外，它可以(yi)與中央(yang)信號(hao)屏(ping)幕設計集成。

例如，有(you)一天晚上，變電站(zhan)發生事故，高壓開(kai)關斷開(kai)，外(wai)部(bu)電源(yuan)切斷。“但我們仍然希望(wang)有電(dian)器可(ke)以(yi)報警(jing)和診斷。這些儀器和控制電(dian)器從哪里(li)來？”？你必須依靠一個(ge)重(zhong)慶直流屏幕或一個簡單的分布(bu)式直流電(dian)源，它里面有一個電(dian)池電(dian)源。