所有欄目

接地變壓器

2017/12/26

一、產品概述

電(dian)(dian)力系(xi)統中(zhong)(zhong)(zhong)(zhong)的(de)(de)6kV、10kV、35kV電(dian)(dian)網中(zhong)(zhong)(zhong)(zhong)一般都(dou)采用中(zhong)(zhong)(zhong)(zhong)性點(dian)不(bu)接(jie)(jie)(jie)地(di)(di)的(de)(de)運行方式(shi)。電(dian)(dian)網中(zhong)(zhong)(zhong)(zhong)主變壓器(qi)低壓側(ce)一般為(wei)三(san)角(jiao)形(xing)接(jie)(jie)(jie)法，沒(mei)有(you)可以接(jie)(jie)(jie)地(di)(di)的(de)(de)中(zhong)(zhong)(zhong)(zhong)性點(dian)。隨著城(cheng)市電(dian)(dian)網的(de)(de)不(bu)斷(duan)擴(kuo)大及電(dian)(dian)纜出線(xian)的(de)(de)不(bu)斷(duan)增多，系(xi)統對地(di)(di)電(dian)(dian)容電(dian)(dian)流(liu)(liu)急劇增加，單相(xiang)接(jie)(jie)(jie)地(di)(di)后流(liu)(liu)經故(gu)障(zhang)(zhang)點(dian)的(de)(de)電(dian)(dian)容電(dian)(dian)流(liu)(liu)較大（超過10A）。為(wei)了減小(xiao)單相(xiang)接(jie)(jie)(jie)地(di)(di)故(gu)障(zhang)(zhang)時的(de)(de)對地(di)(di)電(dian)(dian)容電(dian)(dian)流(liu)(liu)，需要在(zai)變壓器(qi)中(zhong)(zhong)(zhong)(zhong)性點(dian)裝(zhuang)設(she)消(xiao)弧線(xian)圈(quan)等補(bu)償裝(zhuang)置，因此需人為(wei)建立一個(ge)中(zhong)(zhong)(zhong)(zhong)性點(dian)，以便在(zai)中(zhong)(zhong)(zhong)(zhong)性點(dian)接(jie)(jie)(jie)入消(xiao)弧線(xian)圈(quan)，減小(xiao)接(jie)(jie)(jie)地(di)(di)短路斷(duan)路電(dian)(dian)流(liu)(liu)，提高系(xi)統供電(dian)(dian)可靠性。

另外，發電(dian)(dian)(dian)(dian)(dian)機在(zai)運行中，發生單相(xiang)(xiang)接(jie)(jie)(jie)地(di)(di)(di)(di)是(shi)做常(chang)見的(de)故障，故障點(dian)出現電(dian)(dian)(dian)(dian)(dian)弧接(jie)(jie)(jie)地(di)(di)(di)(di)時會進一(yi)步擴大定子(zi)繞(rao)組(zu)絕緣(yuan)(yuan)損害。發電(dian)(dian)(dian)(dian)(dian)機中性點(dian)經高(gao)電(dian)(dian)(dian)(dian)(dian)阻(zu)接(jie)(jie)(jie)地(di)(di)(di)(di)能有(you)效(xiao)抑制發電(dian)(dian)(dian)(dian)(dian)機接(jie)(jie)(jie)地(di)(di)(di)(di)故障電(dian)(dian)(dian)(dian)(dian)流，從而有(you)效(xiao)防止發電(dian)(dian)(dian)(dian)(dian)機定子(zi)繞(rao)組(zu)燒毀，降低電(dian)(dian)(dian)(dian)(dian)弧接(jie)(jie)(jie)地(di)(di)(di)(di)暫態過(guo)電(dian)(dian)(dian)(dian)(dian)壓。為此，我公司針對電(dian)(dian)(dian)(dian)(dian)機單相(xiang)(xiang)接(jie)(jie)(jie)地(di)(di)(di)(di)故障研發了(le)電(dian)(dian)(dian)(dian)(dian)機中性點(dian)接(jie)(jie)(jie)地(di)(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)柜，主要由單相(xiang)(xiang)接(jie)(jie)(jie)地(di)(di)(di)(di)變(bian)壓器與電(dian)(dian)(dian)(dian)(dian)阻(zu)器結合，可(ke)有(you)效(xiao)避免(mian)接(jie)(jie)(jie)地(di)(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)流對發電(dian)(dian)(dian)(dian)(dian)機定子(zi)繞(rao)組(zu)和絕緣(yuan)(yuan)的(de)損害。

二、產品特點

我(wo)公司生產專(zhuan)業6kV級(ji)、10kV級(ji)、20kV級(ji)、35kV級(ji)接地變(bian)壓器(qi)(qi)，有環氧澆注干(gan)式和油(you)浸式接地變(bian)壓器(qi)(qi)，電機專(zhuan)用的(de)單相接地變(bian)壓器(qi)(qi)。我(wo)公司工程(cheng)師在(zai)接地變(bian)壓器(qi)(qi)設計方(fang)面(mian)有多年的(de)經驗，在(zai)產品(pin)外觀(guan)、性(xing)能和品(pin)質上面(mian)處(chu)于行業領先地位。

1.鐵芯

采用(yong)優質(zhi)冷(leng)軋(ya)取(qu)向硅(gui)鋼片,45°全斜接縫,鐵軛用(yong)穿心螺桿夾緊(jin),心柱用(yong)玻璃纖維帶(dai)綁(bang)扎。鐵芯表面(mian)噴涂硅(gui)樹脂膠,防潮(chao)、緊(jin)固并(bing)使噪聲(sheng)降到(dao)最低。

2.繞組

內、外繞(rao)組(zu)均采用(yong)優質銅導(dao)線繞(rao)制,用(yong)分(fen)段(duan)圓筒式結構,增強層(ceng)間絕緣，采用(yong)真空干(gan)燥(zao)工藝，成型(xing)后的(de)繞(rao)組(zu)具有(you)電氣(qi)性能好、機(ji)械強度高(gao)、局部(bu)放電量小等特點。

3.干式接(jie)地變(bian)壓(ya)器(qi)用(yong)(yong)環氧樹脂不填充真空澆(jiao)注(zhu)，相(xiang)比非包封(feng)產(chan)品(pin)具有(you)(you)較強的(de)防煙霧、水露能(neng)力(li)。油(you)浸式接(jie)地變(bian)壓(ya)器(qi)采用(yong)(yong)全密封(feng)結構(gou)，采用(yong)(yong)波紋片散熱取消儲油(you)柜，油(you)箱與箱沿用(yong)(yong)耐油(you)膠條密封(feng)，避免變(bian)壓(ya)器(qi)油(you)與空氣(qi)(qi)接(jie)觸，變(bian)壓(ya)器(qi)油(you)不與空氣(qi)(qi)接(jie)觸，保證了(le)產(chan)品(pin)絕緣性(xing)能(neng)和使用(yong)(yong)壽(shou)命(ming)。產(chan)品(pin)具有(you)(you)占地面積小，外形(xing)美觀，免維護特點。

4.保護裝置

油(you)(you)浸式接地變壓(ya)(ya)器裝(zhuang)有(you)壓(ya)(ya)力釋放閥和瓦斯繼電器，并配有(you)油(you)(you)位(wei)計，方(fang)便隨時(shi)查看變壓(ya)(ya)器油(you)(you)位(wei)。干式接地變壓(ya)(ya)器配有(you)溫控(kong)裝(zhuang)置，并有(you)遠(yuan)傳(chuan)功能，方(fang)便隨時(shi)巡查產品(pin)運行溫度(du)。

三、執行標準

GB 1094.1-1996 電力變壓(ya)器第(di)1部分總則

GB 1094.2-1996 電(dian)力變壓(ya)器第(di)2部(bu)分溫升

GB 1094.3-2003 電力變壓器第3部分(fen) 絕緣水平(ping)絕緣試驗(yan)和外絕緣空氣間(jian)隙

GB 1094.5-2003 電力(li)變(bian)壓器第5部分承受短(duan)路的能力(li)

GB/T10229-1988 電抗(kang)器

四、型號說明