一、使用直流屏有什么好處

高壓配電室用(yong)直流(liu)屏作(zuo)(zuo)控制、保護、監控和(he)操作(zuo)(zuo)斷路(lu)器(qi)的電氣電源(yuan)，交流(liu)也可以，主要是根據(ju)斷路(lu)器(qi)控制操作(zuo)(zuo)電源(yuan)類型再決定。

用直流屏的(de)好處是直流屏可(ke)以不用考慮三相(xiang)平(ping)衡的(de)問(wen)題；直流屏安全又可(ke)靠(kao)。直流屏可(ke)以在交(jiao)(jiao)流電(dian)(dian)源正常的(de)情(qing)況(kuang)下給蓄電(dian)(dian)池組(zu)事先充滿電(dian)(dian)，當交(jiao)(jiao)流電(dian)(dian)源停電(dian)(dian)時，由蓄電(dian)(dian)池饋電(dian)(dian)，仍能保證(zheng)斷路(lu)器的(de)操作、控制(zhi)、保護和監控用電(dian)(dian)。

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二、直流屏的作用

直流屏(ping)的作用是(shi)用來供應這種直流電源。

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，直流屏就是提供(gong)穩定直(zhi)流電(dian)(dian)(dian)源的設備。在(zai)輸入380V電(dian)(dian)(dian)源時直(zhi)接轉化(hua)為220V，市(shi)電(dian)(dian)(dian)和(he)備用電(dian)(dian)(dian)均無輸入時，直(zhi)接轉化(hua)為蓄電(dian)(dian)(dian)池供(gong)電(dian)(dian)(dian)——直(zhi)流220V：實際上也(ye)可以(yi)說是一種工業專用應急電(dian)(dian)(dian)源。

發電(dian)(dian)廠和變電(dian)(dian)站中的電(dian)(dian)力(li)操作電(dian)(dian)源現今采(cai)用的都是(shi)直流(liu)電(dian)(dian)源，它為控(kong)制負(fu)荷(he)和動力(li)負(fu)荷(he)以及直流(liu)事故照明負(fu)荷(he)等(deng)提供(gong)電(dian)(dian)源，是(shi)當(dang)代電(dian)(dian)力(li)系統控(kong)制、保護的基礎。直流(liu)屏由(you)交配電(dian)(dian)單(dan)(dan)元(yuan)(yuan)、充(chong)電(dian)(dian)模(mo)塊(kuai)單(dan)(dan)元(yuan)(yuan)、降壓硅鏈單(dan)(dan)元(yuan)(yuan)、直流(liu)饋電(dian)(dian)單(dan)(dan)元(yuan)(yuan)、配電(dian)(dian)監控(kong)單(dan)(dan)元(yuan)(yuan)、監控(kong)模(mo)塊(kuai)單(dan)(dan)元(yuan)(yuan)及絕緣監測單(dan)(dan)元(yuan)(yuan)組成。

直流(liu)屏主要應用(yong)于電(dian)(dian)(dian)力系統中(zhong)小型(xing)發電(dian)(dian)(dian)廠、水(shui)電(dian)(dian)(dian)站、各類變電(dian)(dian)(dian)站，和其他使用(yong)直流(liu)設備的(de)用(yong)戶（如(ru)石化、礦山(shan)、鐵路(lu)等），適用(yong)于開(kai)關分合閘(zha)及二次回路(lu)中(zhong)的(de)儀(yi)器、儀(yi)表、繼(ji)電(dian)(dian)(dian)保護和故(gu)障照(zhao)明等場合。