芒果视频

直流屏行業簡介

一、什么是直流屏

直(zhi)流(liu)屏(ping)是直(zhi)流(liu)電(dian)(dian)(dian)源(yuan)操作系統的簡(jian)(jian)稱。通用(yong)名(ming)為(wei)智(zhi)能免維(wei)護直(zhi)流(liu)電(dian)(dian)(dian)源(yuan)屏(ping)，簡(jian)(jian)稱直(zhi)流(liu)屏(ping)，通用(yong)型號為(wei)GZDW。簡(jian)(jian)單地(di)說，直(zhi)流(liu)屏(ping)就是提供穩定直(zhi)流(liu)電(dian)(dian)(dian)源(yuan)的設備。在輸(shu)入380V電(dian)(dian)(dian)源(yuan)時直(zhi)接(jie)轉化為(wei)220V，市電(dian)(dian)(dian)和備用(yong)電(dian)(dian)(dian)均無輸(shu)入時，直(zhi)接(jie)轉化為(wei)蓄電(dian)(dian)(dian)池供電(dian)(dian)(dian)——直(zhi)流(liu)220V：實際上也可以(yi)說是一種工業專用(yong)應急電(dian)(dian)(dian)源(yuan)。

二、使用直流屏有什么好處

用直(zhi)(zhi)流(liu)(liu)(liu)屏(ping)的好(hao)處是直(zhi)(zhi)流(liu)(liu)(liu)屏(ping)可以不用考慮(lv)三相平衡的問題；直(zhi)(zhi)流(liu)(liu)(liu)屏(ping)安全又可靠。直(zhi)(zhi)流(liu)(liu)(liu)屏(ping)可以在(zai)交流(liu)(liu)(liu)電(dian)(dian)源正常的情(qing)況(kuang)下給蓄電(dian)(dian)池(chi)組事先充(chong)滿電(dian)(dian)，當交流(liu)(liu)(liu)電(dian)(dian)源停(ting)電(dian)(dian)時(shi)，由蓄電(dian)(dian)池(chi)饋電(dian)(dian)，仍能保(bao)(bao)證斷路器的操作、控(kong)制、保(bao)(bao)護(hu)和監(jian)控(kong)用電(dian)(dian)。

三、直流屏的作用

直流屏的作用是用來供應這種直流電源。發電廠和(he)變(bian)電站中的(de)(de)電力(li)(li)操作(zuo)電源(yuan)現今采用的(de)(de)都(dou)是(shi)直流電源(yuan)，它為控(kong)制(zhi)負荷和(he)動力(li)(li)負荷以及(ji)直流事故(gu)照明負荷等提(ti)供電源(yuan)，是(shi)當代電力(li)(li)系統控(kong)制(zhi)、保護的(de)(de)基礎。

直流屏主要應用于電(dian)力系(xi)統中小型(xing)發電(dian)廠、水電(dian)站、各類變(bian)電(dian)站，和(he)其他使(shi)用直流設備的(de)用戶（如石化、礦山、鐵路等），適用于開關分合(he)閘及二次回路中的(de)儀器、儀表、繼電(dian)保護和(he)故障(zhang)照明等場合(he)。

四、直流屏的工作原理

直流(liu)屏(ping)電(dian)(dian)(dian)力(li)操作電(dian)(dian)(dian)源(yuan)系統(tong)由(you)(you)交流(liu)配電(dian)(dian)(dian)部(bu)(bu)(bu)分(fen)(fen)(fen)、整(zheng)流(liu)部(bu)(bu)(bu)分(fen)(fen)(fen)、直流(liu)饋(kui)電(dian)(dian)(dian)部(bu)(bu)(bu)分(fen)(fen)(fen)、監(jian)(jian)控(kong)(kong)部(bu)(bu)(bu)分(fen)(fen)(fen)組(zu)(zu)(zu)成。其(qi)中(zhong)交流(liu)配電(dian)(dian)(dian)部(bu)(bu)(bu)分(fen)(fen)(fen)主要由(you)(you)交流(liu)配電(dian)(dian)(dian)單(dan)元組(zu)(zu)(zu)成。整(zheng)流(liu)部(bu)(bu)(bu)分(fen)(fen)(fen)由(you)(you)充電(dian)(dian)(dian)模(mo)塊和隔(ge)離二極管組(zu)(zu)(zu)成。直流(liu)饋(kui)電(dian)(dian)(dian)部(bu)(bu)(bu)分(fen)(fen)(fen)由(you)(you)降壓(ya)硅鏈(lian)、絕緣(yuan)檢(jian)測、合(he)閘分(fen)(fen)(fen)路和控(kong)(kong)制(zhi)分(fen)(fen)(fen)路組(zu)(zu)(zu)成，監(jian)(jian)控(kong)(kong)部(bu)(bu)(bu)分(fen)(fen)(fen)由(you)(you)監(jian)(jian)控(kong)(kong)模(mo)塊和配電(dian)(dian)(dian)監(jian)(jian)控(kong)(kong)組(zu)(zu)(zu)成。

系統交流(liu)(liu)輸(shu)入正(zheng)常時，兩路(lu)(lu)(lu)交流(liu)(liu)輸(shu)入經(jing)交流(liu)(liu)切換控制(zhi)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)選擇其中一路(lu)(lu)(lu)輸(shu)入，并通(tong)過交流(liu)(liu)配電(dian)(dian)(dian)(dian)單元給(gei)各(ge)個(ge)充電(dian)(dian)(dian)(dian)模塊供電(dian)(dian)(dian)(dian)。充電(dian)(dian)(dian)(dian)模塊將三相(xiang)交流(liu)(liu)電(dian)(dian)(dian)(dian)轉(zhuan)換為(wei)220V或110V的(de)直流(liu)(liu)，經(jing)隔離(li)二極管隔離(li)后并聯輸(shu)出，一方(fang)面(mian)給(gei)電(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)，另(ling)一方(fang)面(mian)通(tong)過合閘分路(lu)(lu)(lu)和控制(zhi)分路(lu)(lu)(lu)給(gei)負(fu)載提供正(zheng)常的(de)直流(liu)(liu)電(dian)(dian)(dian)(dian)源。

交流(liu)輸(shu)入停電或異常時，充(chong)(chong)(chong)電模(mo)塊(kuai)(kuai)停止(zhi)工作，由電池(chi)通過合(he)閘分(fen)路和控制分(fen)路給(gei)負載供電。交流(liu)輸(shu)入恢復(fu)正常以后，充(chong)(chong)(chong)電模(mo)塊(kuai)(kuai)對電池(chi)充(chong)(chong)(chong)電。