? 計(ji)算機網絡作為信(xin)(xin)息(xi)和數據通信(xin)(xin)工(gong)(gong)具已成(cheng)為信(xin)(xin)息(xi)時代(dai)的技術支柱,使人類生(sheng)產(chan)和社會生(sheng)活的面(mian)貌(mao)發生(sheng)了根本變化。它(ta)深刻影(ying)響著各(ge)個工(gong)(gong)業領域,也為各(ge)個工(gong)(gong)業領域提供了強有(you)力的通信(xin)(xin)手段。到目前為止,除了差動保(bao)(bao)護(hu)和縱聯保(bao)(bao)護(hu)外,所有(you)繼電保(bao)(bao)護(hu)裝置都只能反應保(bao)(bao)護(hu)安裝處的電氣量。
繼電(dian)(dian)(dian)器是(shi)具有隔離功能的自動開關元件,廣泛應(ying)用(yong)于(yu)遙控、遙測、通訊、自動控制、機電(dian)(dian)(dian)一體(ti)化及電(dian)(dian)(dian)力電(dian)(dian)(dian)子設備中,是(shi)最重要的控制元件之一。根據國際市場(chang)研究(jiu)機構(gou)MarketsandMarkets發布的研究(jiu)報告認為,受(shou)到配電(dian)(dian)(dian)自動化投資需(xu)求增加(jia)推動,到2021年(nian),全球自動繼電(dian)(dian)(dian)器市場(chang)規模(mo)將(jiang)達到10.33億美元,期間年(nian)復(fu)合增率(lv)達到3.9%。
1、繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)額(e)定工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的選擇 繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)額(e)定工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是(shi)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)最(zui)主要的一項技術參數(shu)。在(zai)(zai)使用繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)時,應(ying)該首先考(kao)(kao)慮所(suo)(suo)(suo)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(即繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)線圈所(suo)(suo)(suo)在(zai)(zai)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu))的工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya),繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的額(e)定工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)應(ying)等于所(suo)(suo)(suo)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。一般所(suo)(suo)(suo)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是(shi)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)額(e)定工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的0.86。注意(yi)所(suo)(suo)(suo)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的工(gong)(gong)件(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)千萬不能超過繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)額(e)定工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya),否(fou)則繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)線圈容(rong)易燒毀。另(ling)外(wai),有(you)些(xie)集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu),例(li)如(ru)NE555電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)是(shi)可(ke)以(yi)直接(jie)驅動繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)工(gong)(gong)作(zuo)的,而有(you)些(xie)集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu),例(li)如(ru)COMS電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流小,需要加一級晶體(ti)管(guan)(guan)放大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)方可(ke)驅動繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi),這就應(ying)考(kao)(kao)慮晶體(ti)管(guan)(guan)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流應(ying)大于繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的額(e)定工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。