【電(dian)(dian)力變壓器】電(dian)(dian)力變壓器規格型號 電(dian)(dian)力變壓器分類(lei)及作用
電力變壓器型號規格有哪些
電力變壓器型號有哪些?主要有SZ11型-35KV系(xi)列(lie)(lie)油浸(jin)(jin)式(shi)、SCB10型-10KV系(xi)列(lie)(lie)干式(shi)、S11型-10KV系(xi)列(lie)(lie)油浸(jin)(jin)式(shi)、SCB10型-20KV系(xi)列(lie)(lie)干式(shi)、SB11型-20KV系(xi)列(lie)(lie)油浸(jin)(jin)式(shi)。變壓器按冷卻(que)方式(shi)來(lai)分為油浸(jin)(jin)式(shi)和干式(shi)變兩種(zhong)。
變壓器具體型(xing)號(hao)每個廠(chang)家叫法可(ke)能都(dou)有細微差別,市面其(qi)它的(de)型(xing)號(hao)還(huan)有如(ru)下:35kV級(ji)(ji)(ji)S9-~系(xi)列(lie)(lie)油(you)浸(jin)式(shi)(shi)電(dian)(dian)力(li)(li)變(bian)壓(ya)器(qi)(qi)、SG-系(xi)列(lie)(lie)三相(xiang)干(gan)(gan)式(shi)(shi)隔(ge)離變(bian)壓(ya)器(qi)(qi)、CKSC系(xi)列(lie)(lie)串聯電(dian)(dian)抗器(qi)(qi)、10KV級(ji)(ji)(ji)ZPSG系(xi)列(lie)(lie)干(gan)(gan)式(shi)(shi)整流(liu)變(bian)壓(ya)器(qi)(qi)、KBSG礦用防爆干(gan)(gan)式(shi)(shi)變(bian)壓(ya)器(qi)(qi)、35kV級(ji)(ji)(ji)S9-~系(xi)列(lie)(lie)油(you)浸(jin)式(shi)(shi)電(dian)(dian)力(li)(li)變(bian)壓(ya)器(qi)(qi)、SG10型(xing)H級(ji)(ji)(ji)絕緣干(gan)(gan)式(shi)(shi)電(dian)(dian)力(li)(li)變(bian)壓(ya)器(qi)(qi)、35KV級(ji)(ji)(ji)ZS系(xi)列(lie)(lie)油(you)浸(jin)整流(liu)變(bian)壓(ya)器(qi)(qi)、10kV級(ji)(ji)(ji)S9、S11系(xi)列(lie)(lie)油(you)浸(jin)式(shi)(shi)電(dian)(dian)力(li)(li)變(bian)壓(ya)器(qi)(qi)、S(B)H-M非晶合金卷鐵芯(xin)(xin)電(dian)(dian)力(li)(li)變(bian)壓(ya)器(qi)(qi)、SGB11-R卷鐵芯(xin)(xin)H級(ji)(ji)(ji)非包封線圈干(gan)(gan)式(shi)(shi)電(dian)(dian)力(li)(li)變(bian)壓(ya)器(qi)(qi)等(deng)一系(xi)列(lie)(lie)眾多型(xing)號(hao)。
電力變壓器分類
電(dian)力變(bian)壓(ya)器按用途分類:升壓(ya)(發電(dian)廠6.3kV/10.5kV或10.5kV/110kV等(deng))、聯絡(變(bian)電(dian)站間用220kV/110kV或110kV/10.5kV)、降壓(ya)(配電(dian)用35kV/0.4kV或10.5kV/0.4kV)。
電力變壓器按相(xiang)數(shu)分類:單相(xiang)、三相(xiang)。
電(dian)力變壓(ya)(ya)(ya)(ya)器(qi)按繞(rao)(rao)組(zu)(zu)(zu)分(fen)類:雙(shuang)繞(rao)(rao)組(zu)(zu)(zu)(每相裝在同一(yi)(yi)(yi)(yi)(yi)鐵心上,原、副繞(rao)(rao)組(zu)(zu)(zu)分(fen)開繞(rao)(rao)制(zhi)、相互絕(jue)緣)、三(san)繞(rao)(rao)組(zu)(zu)(zu)(每相有三(san)個繞(rao)(rao)組(zu)(zu)(zu),原、副繞(rao)(rao)組(zu)(zu)(zu)分(fen)開繞(rao)(rao)制(zhi)、相互絕(jue)緣)、自(zi)耦變壓(ya)(ya)(ya)(ya)器(qi)(一(yi)(yi)(yi)(yi)(yi)套繞(rao)(rao)組(zu)(zu)(zu)中(zhong)間抽頭作為一(yi)(yi)(yi)(yi)(yi)次(ci)或二次(ci)輸(shu)出)。三(san)繞(rao)(rao)組(zu)(zu)(zu)變壓(ya)(ya)(ya)(ya)器(qi)要(yao)求一(yi)(yi)(yi)(yi)(yi)次(ci)繞(rao)(rao)組(zu)(zu)(zu)的容(rong)量(liang)大于或等于二、三(san)次(ci)繞(rao)(rao)組(zu)(zu)(zu)的容(rong)量(liang)。三(san)繞(rao)(rao)組(zu)(zu)(zu)容(rong)量(liang)的百分(fen)比按高壓(ya)(ya)(ya)(ya)、中(zhong)壓(ya)(ya)(ya)(ya)、低(di)壓(ya)(ya)(ya)(ya)順序有:100/100/100、100/50/100、100/100/50,要(yao)求二、三(san)次(ci)繞(rao)(rao)組(zu)(zu)(zu)均(jun)不能滿載運行。一(yi)(yi)(yi)(yi)(yi)般三(san)次(ci)繞(rao)(rao)組(zu)(zu)(zu)電(dian)壓(ya)(ya)(ya)(ya)較低(di),多(duo)用(yong)(yong)于近(jin)區(qu)供電(dian)或接(jie)補償設備(bei),用(yong)(yong)于連接(jie)三(san)個電(dian)壓(ya)(ya)(ya)(ya)等級(ji)。自(zi)耦變壓(ya)(ya)(ya)(ya)器(qi):有升壓(ya)(ya)(ya)(ya)或降(jiang)壓(ya)(ya)(ya)(ya)二種,因其損(sun)耗(hao)小、重量(liang)輕、使用(yong)(yong)經濟,為此在超高壓(ya)(ya)(ya)(ya)電(dian)網中(zhong)應用(yong)(yong)較多(duo)。小型自(zi)耦變壓(ya)(ya)(ya)(ya)器(qi)常用(yong)(yong)的型號為400V/36V(24V),用(yong)(yong)于安全照明等設備(bei)供電(dian)。
電力(li)變(bian)壓器(qi)按絕(jue)緣(yuan)介質分類:油(you)浸變(bian)壓器(qi)(阻(zu)燃(ran)型(xing)、非阻(zu)燃(ran)型(xing))、干(gan)式變(bian)壓器(qi)、110kVSF6氣體絕(jue)緣(yuan)變(bian)壓器(qi)。
電力變壓器(qi)鐵心均為芯(xin)式結構。
一般通信工程中(zhong)所配置的三相電力變壓(ya)器為雙繞組變壓(ya)器。
電力變壓器的作用
電(dian)力變(bian)(bian)壓(ya)(ya)(ya)器是發(fa)電(dian)廠和(he)變(bian)(bian)電(dian)所的主要(yao)設(she)備之(zhi)一。變(bian)(bian)壓(ya)(ya)(ya)器的作用(yong)(yong)是多方面的不僅能(neng)(neng)升高電(dian)壓(ya)(ya)(ya)把電(dian)能(neng)(neng)送(song)到(dao)用(yong)(yong)電(dian)地區,還(huan)能(neng)(neng)把電(dian)壓(ya)(ya)(ya)降低為(wei)各級(ji)使(shi)用(yong)(yong)電(dian)壓(ya)(ya)(ya),以滿足用(yong)(yong)電(dian)的需要(yao)。總之(zhi),升壓(ya)(ya)(ya)與(yu)降壓(ya)(ya)(ya)都必(bi)須(xu)由變(bian)(bian)壓(ya)(ya)(ya)器來完成。在電(dian)力系(xi)統傳送(song)電(dian)能(neng)(neng)的過程中(zhong),必(bi)然會產生電(dian)壓(ya)(ya)(ya)和(he)功率(lv)(lv)兩部分損(sun)(sun)耗,在輸送(song)同一功率(lv)(lv)時(shi)電(dian)壓(ya)(ya)(ya)損(sun)(sun)耗與(yu)電(dian)壓(ya)(ya)(ya)成反(fan)比,功率(lv)(lv)損(sun)(sun)耗與(yu)電(dian)壓(ya)(ya)(ya)的平方成反(fan)比。利用(yong)(yong)變(bian)(bian)壓(ya)(ya)(ya)器提高電(dian)壓(ya)(ya)(ya),減少了送(song)電(dian)損(sun)(sun)失(shi)。
變(bian)壓(ya)器(qi)是由繞(rao)在同一鐵芯上(shang)的兩(liang)個(ge)或(huo)兩(liang)個(ge)以上(shang)的線圈(quan)繞(rao)組組成,繞(rao)組之(zhi)間是通過(guo)交(jiao)變(bian)磁場而(er)聯系著并(bing)按(an)電(dian)磁感(gan)應(ying)原理(li)工(gong)作。變(bian)壓(ya)器(qi)安裝位置應(ying)考(kao)慮(lv)便于運(yun)行(xing)、檢修(xiu)和(he)運(yun)輸,同時應(ying)選(xuan)擇(ze)安全(quan)可靠的地(di)方。在使用(yong)變(bian)壓(ya)器(qi)時必(bi)須合理(li)地(di)選(xuan)用(yong)變(bian)壓(ya)器(qi)的額(e)定(ding)容(rong)量(liang)(liang)。變(bian)壓(ya)器(qi)空(kong)載(zai)運(yun)行(xing)時,需用(yong)較大的無功功率(lv)。這些無功功率(lv)要由供電(dian)系統(tong)供給。變(bian)壓(ya)器(qi)的容(rong)量(liang)(liang)若選(xuan)擇(ze)過(guo)大,不但增加(jia)了初投資(zi),而(er)且使變(bian)壓(ya)器(qi)長期處于空(kong)載(zai)或(huo)輕載(zai)運(yun)行(xing),使空(kong)載(zai)損(sun)耗的比重增大,功率(lv)因數降低,網(wang)絡損(sun)耗增加(jia),這樣運(yun)行(xing)既不經濟又不合理(li)。變(bian)壓(ya)器(qi)容(rong)量(liang)(liang)選(xuan)擇(ze)過(guo)小(xiao),會使變(bian)壓(ya)器(qi)長期過(guo)負荷(he),易損(sun)壞(huai)設備。因此,變(bian)壓(ya)器(qi)的額(e)定(ding)容(rong)量(liang)(liang)應(ying)根據用(yong)電(dian)負荷(he)的需要進行(xing)選(xuan)擇(ze),不宜(yi)過(guo)大或(huo)過(guo)小(xiao)。