【電(dian)力變壓器(qi)】電(dian)力變壓器(qi)規格型號(hao) 電(dian)力變壓器(qi)分類及作用

電力變壓器型號規格有哪些

電力變壓器(qi)型(xing)號有哪(na)些(xie)？主(zhu)要(yao)有SZ11型(xing)-35KV系(xi)(xi)列(lie)(lie)油(you)浸(jin)式(shi)(shi)、SCB10型(xing)-10KV系(xi)(xi)列(lie)(lie)干式(shi)(shi)、S11型(xing)-10KV系(xi)(xi)列(lie)(lie)油(you)浸(jin)式(shi)(shi)、SCB10型(xing)-20KV系(xi)(xi)列(lie)(lie)干式(shi)(shi)、SB11型(xing)-20KV系(xi)(xi)列(lie)(lie)油(you)浸(jin)式(shi)(shi)。變壓器(qi)按(an)冷卻(que)方式(shi)(shi)來分為油(you)浸(jin)式(shi)(shi)和(he)干式(shi)(shi)變兩種(zhong)。

變壓器具體型號(hao)每個廠(chang)家叫法可能(neng)都有(you)細微差(cha)別，市面其它的型號(hao)還(huan)有(you)如下：35kV級S9-~系(xi)(xi)列(lie)油(you)浸式電(dian)力(li)(li)(li)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、SG-系(xi)(xi)列(lie)三相干(gan)(gan)式隔離變(bian)(bian)(bian)壓(ya)器(qi)(qi)、CKSC系(xi)(xi)列(lie)串聯電(dian)抗器(qi)(qi)、10KV級ZPSG系(xi)(xi)列(lie)干(gan)(gan)式整(zheng)(zheng)流(liu)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、KBSG礦用(yong)防爆(bao)干(gan)(gan)式變(bian)(bian)(bian)壓(ya)器(qi)(qi)、35kV級S9-~系(xi)(xi)列(lie)油(you)浸式電(dian)力(li)(li)(li)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、SG10型H級絕緣干(gan)(gan)式電(dian)力(li)(li)(li)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、35KV級ZS系(xi)(xi)列(lie)油(you)浸整(zheng)(zheng)流(liu)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、10kV級S9、S11系(xi)(xi)列(lie)油(you)浸式電(dian)力(li)(li)(li)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、S（B）H-M非晶(jing)合金(jin)卷鐵芯電(dian)力(li)(li)(li)變(bian)(bian)(bian)壓(ya)器(qi)(qi)、SGB11-R卷鐵芯H級非包(bao)封線(xian)圈干(gan)(gan)式電(dian)力(li)(li)(li)變(bian)(bian)(bian)壓(ya)器(qi)(qi)等一系(xi)(xi)列(lie)眾多型號(hao)。

電力變壓器分類

電(dian)(dian)(dian)力(li)變壓(ya)器按用途分類(lei)：升壓(ya)（發(fa)電(dian)(dian)(dian)廠6.3kV/10.5kV或(huo)10.5kV/110kV等）、聯絡（變電(dian)(dian)(dian)站間用220kV/110kV或(huo)110kV/10.5kV）、降壓(ya)（配電(dian)(dian)(dian)用35kV/0.4kV或(huo)10.5kV/0.4kV）。

電力變(bian)壓器按(an)相(xiang)數分類：單相(xiang)、三(san)相(xiang)。

電(dian)(dian)力變(bian)壓(ya)(ya)(ya)器按繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)分類：雙(shuang)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)（每相裝在(zai)同一(yi)鐵心上(shang)，原(yuan)、副(fu)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)分開繞(rao)(rao)(rao)(rao)制、相互絕緣(yuan)）、三(san)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)（每相有(you)三(san)個繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)，原(yuan)、副(fu)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)分開繞(rao)(rao)(rao)(rao)制、相互絕緣(yuan)）、自(zi)耦(ou)變(bian)壓(ya)(ya)(ya)器（一(yi)套繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)中間抽頭作為一(yi)次(ci)(ci)或二(er)(er)次(ci)(ci)輸出）。三(san)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)變(bian)壓(ya)(ya)(ya)器要求一(yi)次(ci)(ci)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)的容量(liang)(liang)大于(yu)(yu)或等于(yu)(yu)二(er)(er)、三(san)次(ci)(ci)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)的容量(liang)(liang)。三(san)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)容量(liang)(liang)的百分比按高壓(ya)(ya)(ya)、中壓(ya)(ya)(ya)、低壓(ya)(ya)(ya)順序有(you)：100/100/100、100/50/100、100/100/50，要求二(er)(er)、三(san)次(ci)(ci)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)均不(bu)能滿載(zai)運行。一(yi)般三(san)次(ci)(ci)繞(rao)(rao)(rao)(rao)組(zu)(zu)(zu)電(dian)(dian)壓(ya)(ya)(ya)較(jiao)低，多用于(yu)(yu)近區供(gong)電(dian)(dian)或接補償(chang)設(she)備，用于(yu)(yu)連接三(san)個電(dian)(dian)壓(ya)(ya)(ya)等級。自(zi)耦(ou)變(bian)壓(ya)(ya)(ya)器：有(you)升壓(ya)(ya)(ya)或降(jiang)壓(ya)(ya)(ya)二(er)(er)種，因其損耗小、重量(liang)(liang)輕、使用經(jing)濟，為此在(zai)超高壓(ya)(ya)(ya)電(dian)(dian)網(wang)中應(ying)用較(jiao)多。小型(xing)自(zi)耦(ou)變(bian)壓(ya)(ya)(ya)器常用的型(xing)號為400V/36V（24V），用于(yu)(yu)安全照明等設(she)備供(gong)電(dian)(dian)。

電力變(bian)壓器(qi)按(an)絕緣介質(zhi)分類：油浸變(bian)壓器(qi)（阻燃型、非阻燃型）、干式變(bian)壓器(qi)、110kVSF6氣體(ti)絕緣變(bian)壓器(qi)。

電力變壓(ya)器鐵心均為芯式結構。

一般(ban)通信工(gong)程中所(suo)配置的(de)三相電力變(bian)(bian)壓器(qi)為雙(shuang)繞(rao)組變(bian)(bian)壓器(qi)。

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電力變壓器的作用

電(dian)(dian)(dian)力(li)變壓(ya)(ya)(ya)(ya)器是發(fa)電(dian)(dian)(dian)廠和變電(dian)(dian)(dian)所的(de)主要(yao)設備(bei)之一。變壓(ya)(ya)(ya)(ya)器的(de)作用(yong)(yong)是多方面的(de)不(bu)僅能(neng)升高(gao)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)把電(dian)(dian)(dian)能(neng)送到用(yong)(yong)電(dian)(dian)(dian)地區，還能(neng)把電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)降(jiang)低為各級使用(yong)(yong)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，以滿(man)足(zu)用(yong)(yong)電(dian)(dian)(dian)的(de)需要(yao)。總(zong)之，升壓(ya)(ya)(ya)(ya)與(yu)降(jiang)壓(ya)(ya)(ya)(ya)都必須由變壓(ya)(ya)(ya)(ya)器來完成。在電(dian)(dian)(dian)力(li)系統(tong)傳送電(dian)(dian)(dian)能(neng)的(de)過程中，必然會產生電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和功率(lv)兩部分損耗(hao)，在輸(shu)送同一功率(lv)時(shi)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)損耗(hao)與(yu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)成反比，功率(lv)損耗(hao)與(yu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)平方成反比。利用(yong)(yong)變壓(ya)(ya)(ya)(ya)器提高(gao)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，減少了送電(dian)(dian)(dian)損失。

變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)是(shi)由繞在同一鐵芯上(shang)的(de)兩(liang)個(ge)或兩(liang)個(ge)以上(shang)的(de)線(xian)圈繞組組成，繞組之間是(shi)通過交變(bian)磁(ci)場而聯(lian)系著并按電(dian)(dian)磁(ci)感應(ying)(ying)原理工作。變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)安裝位置應(ying)(ying)考慮便于(yu)運(yun)(yun)行(xing)、檢修和運(yun)(yun)輸(shu)，同時(shi)(shi)應(ying)(ying)選擇安全(quan)可靠的(de)地方(fang)。在使(shi)(shi)(shi)用(yong)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)時(shi)(shi)必須合理地選用(yong)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)額定(ding)容量。變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)空(kong)(kong)載(zai)(zai)運(yun)(yun)行(xing)時(shi)(shi)，需用(yong)較大的(de)無功(gong)(gong)功(gong)(gong)率(lv)。這(zhe)(zhe)些無功(gong)(gong)功(gong)(gong)率(lv)要由供電(dian)(dian)系統供給(gei)。變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)容量若(ruo)選擇過大，不(bu)但(dan)增加了初投(tou)資，而且使(shi)(shi)(shi)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)長(chang)期處于(yu)空(kong)(kong)載(zai)(zai)或輕載(zai)(zai)運(yun)(yun)行(xing)，使(shi)(shi)(shi)空(kong)(kong)載(zai)(zai)損耗的(de)比重增大，功(gong)(gong)率(lv)因數降低，網(wang)絡損耗增加，這(zhe)(zhe)樣運(yun)(yun)行(xing)既(ji)不(bu)經濟又不(bu)合理。變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)容量選擇過小(xiao)(xiao)，會使(shi)(shi)(shi)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)長(chang)期過負荷，易損壞設(she)備。因此，變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)額定(ding)容量應(ying)(ying)根據用(yong)電(dian)(dian)負荷的(de)需要進行(xing)選擇，不(bu)宜(yi)過大或過小(xiao)(xiao)。