一、使用直流屏有什么好處

高壓配電室用(yong)直流屏(ping)作(zuo)控制、保護、監控和操作(zuo)斷路器的(de)電氣電源，交流也可以，主要是根(gen)據斷路器控制操作(zuo)電源類型(xing)再(zai)決定(ding)。

用直流屏的(de)好處是(shi)直(zhi)流(liu)屏可(ke)以不(bu)用考(kao)慮三相平衡的(de)問(wen)題(ti)；直(zhi)流(liu)屏安全又(you)可(ke)靠。直(zhi)流(liu)屏可(ke)以在交流(liu)電(dian)(dian)(dian)(dian)(dian)源正常的(de)情況下給蓄電(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)事先充滿(man)電(dian)(dian)(dian)(dian)(dian)，當(dang)交流(liu)電(dian)(dian)(dian)(dian)(dian)源停電(dian)(dian)(dian)(dian)(dian)時，由(you)蓄電(dian)(dian)(dian)(dian)(dian)池(chi)饋電(dian)(dian)(dian)(dian)(dian)，仍能(neng)保證(zheng)斷路器的(de)操(cao)作、控制(zhi)、保護和(he)監控用電(dian)(dian)(dian)(dian)(dian)。

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二、直流屏的作用

直流(liu)屏的(de)作用是用來供應這種直流(liu)電源(yuan)。

直流屏是直流電源操作系統的簡稱。通用名為智能免維護直流電源屏，簡稱直流屏，通用型號為GZDW。簡單地說，直流屏就是(shi)(shi)提(ti)供穩定直流電(dian)(dian)源的設備(bei)。在(zai)輸(shu)入(ru)380V電(dian)(dian)源時直接(jie)轉化為220V，市(shi)電(dian)(dian)和備(bei)用電(dian)(dian)均無輸(shu)入(ru)時，直接(jie)轉化為蓄電(dian)(dian)池供電(dian)(dian)——直流220V：實際上也可(ke)以說是(shi)(shi)一種工業專(zhuan)用應急電(dian)(dian)源。

發電(dian)廠和(he)變電(dian)站中的電(dian)力操作電(dian)源(yuan)現今采用的都是直(zhi)(zhi)流(liu)電(dian)源(yuan)，它為控(kong)制(zhi)負(fu)荷和(he)動力負(fu)荷以及直(zhi)(zhi)流(liu)事故照明負(fu)荷等提供電(dian)源(yuan)，是當代電(dian)力系統控(kong)制(zhi)、保(bao)護的基礎。直(zhi)(zhi)流(liu)屏由(you)交配電(dian)單(dan)(dan)元(yuan)(yuan)、充(chong)電(dian)模(mo)塊單(dan)(dan)元(yuan)(yuan)、降壓硅鏈單(dan)(dan)元(yuan)(yuan)、直(zhi)(zhi)流(liu)饋電(dian)單(dan)(dan)元(yuan)(yuan)、配電(dian)監(jian)控(kong)單(dan)(dan)元(yuan)(yuan)、監(jian)控(kong)模(mo)塊單(dan)(dan)元(yuan)(yuan)及絕緣(yuan)監(jian)測單(dan)(dan)元(yuan)(yuan)組(zu)成。

直流(liu)屏主要應(ying)用(yong)(yong)于電(dian)力(li)系統(tong)中小型發電(dian)廠、水(shui)電(dian)站、各類變(bian)電(dian)站，和(he)其他(ta)使用(yong)(yong)直流(liu)設(she)備(bei)的用(yong)(yong)戶（如石(shi)化(hua)、礦(kuang)山(shan)、鐵路(lu)等(deng)），適用(yong)(yong)于開關分合(he)閘及二次(ci)回路(lu)中的儀(yi)器、儀(yi)表、繼(ji)電(dian)保(bao)護(hu)和(he)故(gu)障照明(ming)等(deng)場合(he)。