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變壓器16個基礎知識，知道10個以上算你牛！
1、什么叫變壓(ya)(ya)器？在(zai)交流電(dian)(dian)路(lu)中，將(jiang)電(dian)(dian)壓(ya)(ya)升(sheng)高(gao)或(huo)降(jiang)低的(de)(de)(de)(de)設(she)備(bei)叫變壓(ya)(ya)器，變壓(ya)(ya)器能把(ba)任一(yi)數值的(de)(de)(de)(de)電(dian)(dian)壓(ya)(ya)轉變成(cheng)(cheng)頻率相同的(de)(de)(de)(de)我們所需的(de)(de)(de)(de)電(dian)(dian)壓(ya)(ya)值，以滿足電(dian)(dian)能的(de)(de)(de)(de)輸送，分配和(he)使(shi)用(yong)(yong)要求。例如發電(dian)(dian)廠發出來的(de)(de)(de)(de)電(dian)(dian)，電(dian)(dian)壓(ya)(ya)等(deng)級較(jiao)低，必須(xu)把(ba)電(dian)(dian)壓(ya)(ya)升(sheng)高(gao)才能輸送到較(jiao)遠的(de)(de)(de)(de)用(yong)(yong)電(dian)(dian)區，用(yong)(yong)電(dian)(dian)區又必須(xu)通(tong)過降(jiang)壓(ya)(ya)變成(cheng)(cheng)適用(yong)(yong)的(de)(de)(de)(de)電(dian)(dian)壓(ya)(ya)等(deng)級，供給動力(li)設(she)備(bei)及日常(chang)用(yong)(yong)電(dian)(dian)設(she)備(bei)使(shi)用(yong)(yong)。2、變壓(ya)(ya)器是怎樣(yang)變換電(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)？變壓(ya)(ya)器是根據電(dian)(dian)磁感應制成(cheng)(cheng)的(de)(de)(de)(de)。它(ta)由一(yi)個用(yong)(yong)硅鋼(gang)片(或(huo)矽鋼(gang)片)疊成(cheng)(cheng)的(de)(de)(de)(de)鐵芯和(he)繞
2019-03-07
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DCS正確停電和上電的步驟
在(zai)因大修或者其(qi)他(ta)原(yuan)因需要對DCS進(jin)行斷(duan)(duan)電維護(hu)時，我們(men)往往對DCS進(jin)行直(zhi)接斷(duan)(duan)電，但有時這(zhe)種不規范的(de)操作(zuo)(zuo)卻(que)會帶(dai)來嚴(yan)重(zhong)后果，比如組態丟失，PID參數丟失等。所(suo)以需要在(zai)停電和重(zhong)新上(shang)電前后對重(zhong)要參數嚴(yan)格檢查(cha)(cha)，小心仔細(xi)、規范操作(zuo)(zuo)。 DCS正確(que)停電第一步：進(jin)行斷(duan)(duan)電前的(de)各項檢查(cha)(cha) 1、打(da)開控(kong)制站(zhan)柜門，觀察卡件是(shi)否工(gong)作(zuo)(zuo)正常(chang)，有無故障顯示； 2、從每個(ge)操作(zuo)(zuo)站(zhan)實時監(jian)控(kong)的(de)故障診斷(duan)(duan)中觀察是(shi)否存在(zai)
2019-02-26
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負荷開關與隔離開關、真空斷路器的區別
一(yi)(yi)、什么(me)是負(fu)荷(he)開(kai)(kai)(kai)關(guan)？ 是具有簡(jian)單的滅(mie)(mie)弧(hu)裝置，可以(yi)(yi)帶負(fu)荷(he)分，合電(dian)(dian)路的控制電(dian)(dian)器。能(neng)通斷(duan)一(yi)(yi)定(ding)(ding)(ding)的負(fu)荷(he)電(dian)(dian)流和過(guo)負(fu)荷(he)電(dian)(dian)流，但不能(neng)斷(duan)開(kai)(kai)(kai)短路電(dian)(dian)流，必須(xu)與高(gao)壓熔(rong)斷(duan)器串聯(lian)使(shi)用，借助熔(rong)斷(duan)器來切除短路電(dian)(dian)流。負(fu)荷(he)開(kai)(kai)(kai)關(guan)的作用： 1. 開(kai)(kai)(kai)斷(duan)和關(guan)合作用。由于它(ta)有一(yi)(yi)定(ding)(ding)(ding)的滅(mie)(mie)弧(hu)能(neng)力，因此可用來開(kai)(kai)(kai)斷(duan)和關(guan)合負(fu)荷(he)電(dian)(dian)流和小干一(yi)(yi)定(ding)(ding)(ding)倍數(通常為3-4倍)的過(guo)載(zai)電(dian)(dian)流;也可以(yi)(yi)用來開(kai)(kai)(kai)斷(duan)和關(guan)
2019-02-18
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火線與零線接反了有什么危害？
1、插(cha)(cha)頭(tou)(tou)、插(cha)(cha)座(zuo)的(de)(de)(de)零(ling)火線(xian)接(jie)反了 插(cha)(cha)頭(tou)(tou)、插(cha)(cha)座(zuo)在(zai)接(jie)線(xian)時，應按照“左(zuo)零(ling)右(you)火”的(de)(de)(de)原則。即左(zuo)側(ce)的(de)(de)(de)插(cha)(cha)頭(tou)(tou)（孔）為(wei)零(ling)線(xian)，右(you)側(ce)的(de)(de)(de)插(cha)(cha)頭(tou)(tou)（孔）為(wei)火線(xian)。 有過個人(ren)接(jie)線(xian)經驗(yan)的(de)(de)(de)用(yong)戶也許會(hui)發現(xian)，如果此時將左(zuo)右(you)兩側(ce)的(de)(de)(de)現(xian)顛倒，并不影響(xiang)使(shi)用(yong)。事(shi)實上(shang)，對于大(da)多數(shu)用(yong)電器(qi)來說(shuo)，確實如此。但這(zhe)么做會(hui)有一(yi)定(ding)的(de)(de)(de)危險。 對于一(yi)些兩腳插(cha)(cha)頭(tou)(tou)的(de)(de)(de)用(yong)電器(qi)來說(shuo)，反接(jie)插(cha)(cha)座(zuo)的(de)(de)(de)零(ling)火線(xian)，完全不會(hui)有影響(xiang)。因為(wei)兩
2019-02-18
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電動機故障判斷及維修方法
一、看觀察電(dian)動(dong)(dong)(dong)機(ji)運行過程中有無異常，其主要表現為以下幾種(zhong)情(qing)況(kuang)。1.定子繞(rao)組(zu)短(duan)路時(shi)，可(ke)能(neng)會看到電(dian)動(dong)(dong)(dong)機(ji)冒(mao)煙(yan)。2.電(dian)動(dong)(dong)(dong)機(ji)嚴重(zhong)過載或缺相運行時(shi)，轉速會變慢(man)且有較沉重(zhong)的(de)"嗡嗡"聲。3.電(dian)動(dong)(dong)(dong)機(ji)正常運行，但突然(ran)停止時(shi)，會看到接(jie)線松(song)脫處(chu)冒(mao)火(huo)花(hua)；保險絲熔斷或某部件(jian)被卡住等現象(xiang)。4.若電(dian)動(dong)(dong)(dong)機(ji)劇烈(lie)振動(dong)(dong)(dong)，則(ze)可(ke)能(neng)是傳動(dong)(dong)(dong)裝置被卡住或電(dian)動(dong)(dong)(dong)機(ji)固定不良、底腳螺栓(shuan)松(song)動(dong)(dong)(dong)等。5.若電(dian)動(dong)(dong)(dong)機(ji)內接(jie)觸點(dian)和連接(jie)處(chu)有變色(se)、燒痕和
2019-01-14
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電力電子技術基礎知識大放送，圖文并茂，免費提供資料原文~
子(zi)器件均(jun)用半導(dao)體(ti)(ti)制成，故也稱為電(dian)(dian)力(li)(li)半導(dao)體(ti)(ti)器件。電(dian)(dian)力(li)(li)電(dian)(dian)子(zi)技(ji)術(shu)所變換的"電(dian)(dian)力(li)(li)"，功率可(ke)以大到數(shu)百(bai)MW甚至GW，也可(ke)以小到數(shu)W甚至1W以下。電(dian)(dian)力(li)(li)電(dian)(dian)子(zi)器件制造技(ji)術(shu)是電(dian)(dian)力(li)(li)電(dian)(dian)子(zi)技(ji)術(shu)的基礎,我國在這(zhe)個環節與(yu)國外差距比較(jiao)大。
2018-10-14
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電氣主接線常見8種接線方式特點
一(yi)、線(xian)(xian)路(lu)(lu)變壓器(qi)組接(jie)線(xian)(xian)線(xian)(xian)路(lu)(lu)變壓器(qi)組接(jie)線(xian)(xian)就(jiu)是(shi)線(xian)(xian)路(lu)(lu)和變壓器(qi)直接(jie)相連,是(shi)一(yi)種最(zui)簡(jian)單的接(jie)線(xian)(xian)方式(shi)，線(xian)(xian)路(lu)(lu)變壓器(qi)組接(jie)線(xian)(xian)的優(you)點是(shi)斷(duan)路(lu)(lu)器(qi)少,接(jie)線(xian)(xian)簡(jian)單,造(zao)價省，對(dui)變電所的供電負荷影響較大，其較適合用于正常二運(yun)一(yi)備的城區中心變電所。二、橋形接(jie)線(xian)(xian)橋形接(jie)線(xian)(xian)采用4個(ge)回路(lu)(lu)3臺斷(duan)路(lu)(lu)器(qi)和6個(ge)隔離開關(guan),是(shi)接(jie)線(xian)(xian)中斷(duan)路(lu)(lu)器(qi)數(shu)量較少，也是(shi)投資較省的一(yi)種接(jie)線(xian)(xian)方式(shi)，根據橋形斷(duan)路(lu)(lu)器(qi)的位(wei)置又可(ke)分為內橋和外橋兩種接(jie)線(xian)(xian)，由于變壓器(qi)的可(ke)靠性遠大于線(xian)(xian)路(lu)(lu),因此
2018-10-08
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電氣工程師有哪些困惑與迷茫？
中(zhong)(zhong)國(guo)的(de)(de)(de)電氣工(gong)(gong)程(cheng)師(shi)(shi)及電氣新手的(de)(de)(de)數量非常龐大，他(ta)(ta)們(men)(men)有什(shen)么(me)困(kun)惑需要去(qu)解開？他(ta)(ta)們(men)(men)最關心的(de)(de)(de)問題是(shi)什(shen)么(me)？他(ta)(ta)們(men)(men)對(dui)未來的(de)(de)(de)期待又是(shi)什(shen)么(me)？中(zhong)(zhong)國(guo)缺少什(shen)么(me)樣的(de)(de)(de)電氣工(gong)(gong)程(cheng)師(shi)(shi)？中(zhong)(zhong)國(guo)缺少滿嘴(zui)胡須的(de)(de)(de)電氣工(gong)(gong)程(cheng)師(shi)(shi)；中(zhong)(zhong)國(guo)缺少坐輪椅的(de)(de)(de)電氣工(gong)(gong)程(cheng)師(shi)(shi)；中(zhong)(zhong)國(guo)缺少在(zai)一個(ge)行業專(zhuan)(zhuan)注(zhu)幾(ji)十年的(de)(de)(de)資(zi)深電氣技術專(zhuan)(zhuan)家；中(zhong)(zhong)國(guo)缺少知識全面，做事精密細(xi)致(zhi)的(de)(de)(de)電氣控(kong)(kong)制系統架(jia)構師(shi)(shi)。工(gong)(gong)控(kong)(kong)資(zi)料窩資(zi)深工(gong)(gong)程(cheng)師(shi)(shi)于工(gong)(gong)經過同電氣工(gong)(gong)程(cheng)師(shi)(shi)朋友們(men)(men)的(de)(de)(de)真(zhen)誠交(jiao)流(liu)，長(chang)時間的(de)(de)(de)深刻思考(kao)電氣工(gong)(gong)程(cheng)師(shi)(shi)一直糾結(jie)于心
2018-10-08
