2013年2月26日山東聊城變壓器有限公司對SGB11-RL三維立體卷鐵芯干(gan)式變(bian)壓器故障(zhang)(zhang)早期診斷(duan)的(de)(de)(de)(de)最佳方(fang)法(fa)(fa)是(shi)油中(zhong)氣(qi)(qi)體(ti)分(fen)(fen)(fen)析(xi)法(fa)(fa)。正常情況下(xia)充油電氣(qi)(qi)設各(ge)內(nei)的(de)(de)(de)(de)絕緣油機(ji)有機(ji)絕緣材料，在熱電作用下(xia)會逐漸老化(hua)和分(fen)(fen)(fen)解(jie)，產生少(shao)量(liang)各(ge)種(zhong)(zhong)(zhong)低分(fen)(fen)(fen)子烴及二氧(yang)化(hua)碳、一(yi)(yi)氧(yang)化(hua)碳等，其大(da)(da)部分(fen)(fen)(fen)溶于(yu)油中(zhong)。在采用C2H2/C2H4、C2H4/H2、C2H4/C2H6三比(bi)值的(de)(de)(de)(de)各(ge)種(zhong)(zhong)(zhong)比(bi)值法(fa)(fa)中(zhong)，都是(shi)根據氣(qi)(qi)體(ti)比(bi)值的(de)(de)(de)(de)范(fan)圍(wei)(wei)劃分(fen)(fen)(fen)區間(jian)，得(de)出比(bi)值范(fan)圍(wei)(wei)的(de)(de)(de)(de)編(bian)(bian)(bian)碼(ma)(ma)，對于(yu)一(yi)(yi)確(que)(que)(que)定(ding)(ding)的(de)(de)(de)(de)比(bi)值，其編(bian)(bian)(bian)碼(ma)(ma)是(shi)唯一(yi)(yi)確(que)(que)(que)定(ding)(ding)的(de)(de)(de)(de)。經過(guo)大(da)(da)量(liang)的(de)(de)(de)(de)實踐及實例驗(yan)證，這種(zhong)(zhong)(zhong)編(bian)(bian)(bian)碼(ma)(ma)基本上(shang)是(shi)合理的(de)(de)(de)(de)。在比(bi)值法(fa)(fa)的(de)(de)(de)(de)氣(qi)(qi)體(ti)區間(jian)劃分(fen)(fen)(fen)中(zhong)，分(fen)(fen)(fen)界(jie)點(dian) 0.1、1、3 是(shi)根據變壓器(qi)大(da)(da)量(liang)的(de)(de)(de)(de)故障(zhang)(zhang)事例，并經過(guo)調查、分(fen)(fen)(fen)析(xi)、采用數學統計方(fang)法(fa)(fa)得(de)出的(de)(de)(de)(de)。顯然(ran)，臨界(jie)點(dian)的(de)(de)(de)(de)值是(shi)一(yi)(yi)個(ge)(ge)(ge)統計值，具(ju)有一(yi)(yi)定(ding)(ding)的(de)(de)(de)(de)分(fen)(fen)(fen)散性，這種(zhong)(zhong)(zhong)統計方(fang)法(fa)(fa)不可(ke)避免地(di)舍(she)棄了一(yi)(yi)些次要(yao)因素，必然(ran)就要(yao)以(yi)犧(xi)牲一(yi)(yi)定(ding)(ding)的(de)(de)(de)(de)判斷(duan)準確(que)(que)(que)度(du)為代(dai)價。要(yao)解(jie)決此(ci)問題可(ke)將三比(bi)值法(fa)(fa)中(zhong)過(guo)于(yu)精確(que)(que)(que)的(de)(de)(de)(de)區間(jian)邊界(jie)模(mo)糊化(hua)，根據比(bi)值區間(jian)分(fen)(fen)(fen)別求取隸屬函數，再根據模(mo)式識別的(de)(de)(de)(de)直(zhi)接法(fa)(fa)找出不同(tong)(tong)范(fan)圍(wei)(wei)的(de)(de)(de)(de)最大(da)(da)隸屬度(du)，以(yi)確(que)(que)(que)定(ding)(ding)二比(bi)值編(bian)(bian)(bian)碼(ma)(ma)，從而確(que)(que)(que)定(ding)(ding)故障(zhang)(zhang)原因，三比(bi)值法(fa)(fa)中(zhong)H2，CH4 , C2H6, C2H4 , C2H2五(wu)種(zhong)(zhong)(zhong)氣(qi)(qi)體(ti)組成的(de)(de)(de)(de)C2H2/ C2H4, CH4 /H2，C2H4/ C2H6三個(ge)(ge)(ge)比(bi)值。每個(ge)(ge)(ge)比(bi)值同(tong)(tong)它的(de)(de)(de)(de)各(ge)個(ge)(ge)(ge)確(que)(que)(que)定(ding)(ding)編(bian)(bian)(bian)碼(ma)(ma)區間(jian)的(de)(de)(de)(de)關系可(ke)以(yi)用特征函數來表(biao)示。

2013年2月26日，山(shan)東聊城變(bian)壓(ya)器(qi)有限公(gong)司在(zai)對(dui)1號機組(zu)(zu)c相SGB11-RL三維立體(ti)卷鐵芯干(gan)式變(bian)壓(ya)器(qi)進行內部(bu)檢(jian)查時(第一次換料大修期間(jian))，發現變(bian)壓(ya)器(qi)旁扼(e)鐵心(xin)藍色綁(bang)扎帶出現移位(wei)(wei)，繞(rao)組(zu)(zu)圍(wei)屏綁(bang)扎帶松脫(tuo)(tuo)，繞(rao)組(zu)(zu)下壓(ya)板處絕(jue)緣(yuan)墊(dian)塊(kuai)移位(wei)(wei)，鐵心(xin)拉板和夾(jia)件之間(jian)的(de)兩孔絕(jue)緣(yuan)墊(dian)塊(kuai)脫(tuo)(tuo)落(luo)，夾(jia)梁與側梁之間(jian)有一螺栓及其墊(dian)圈(quan)脫(tuo)(tuo)落(luo)、箱底座上有一扎絕(jue)緣(yuan)紙和鐵砂等異常(chang)現象。隨后在(zai)對(dui)A相變(bian)壓(ya)器(qi)的(de)檢(jian)查中，同(tong)樣發現存在(zai)旁扼(e)鐵心(xin)藍色綁(bang)扎帶移位(wei)(wei)和一些(xie)保護紙以(yi)及繞(rao)組(zu)(zu)圍(wei)屏綁(bang)扎帶松脫(tuo)(tuo)等現象。在(zai)主變(bian)壓(ya)器(qi)13相的(de)內部(bu)檢(jian)查中，除發現繞(rao)組(zu)(zu)和鐵心(xin)的(de)綁(bang)扎帶各(ge)有一根松脫(tuo)(tuo)外，還發現一個鐵心(xin)旁柱彎曲變(bian)形，彎曲距(ju)離約有90mm。

山(shan)東聊城變壓(ya)(ya)器有限(xian)公司(si)討(tao)論(lun)為繞制630kV*A及以下(xia)SGB11-RL三維立(li)體卷(juan)鐵芯干(gan)式變壓(ya)(ya)器高低壓(ya)(ya)圓筒式線(xian)(xian)(xian)圈“低壓(ya)(ya)0.4KV，高壓(ya)(ya)3-35KVA)設計的(de)(de)臥(wo)式繞線(xian)(xian)(xian)機(ji)(ji)。采用(yong)變頻調速(su)控(kong)制卷(juan)繞機(ji)(ji)構，伺(si)服傳(chuan)動控(kong)制排(pai)線(xian)(xian)(xian)機(ji)(ji)構，RS一485總線(xian)(xian)(xian)實現PLC與變頻器和伺(si)服放大器之(zhi)間的(de)(de)通信。根(gen)據繞制產品的(de)(de)不(bu)同，在不(bu)改(gai)變任(ren)何機(ji)(ji)械(xie)參數(shu)的(de)(de)條件下(xia)，通過(guo)數(shu)字(zi)控(kong)制系(xi)統參數(shu)設置，討(tao)論(lun)各種(zhong)參數(shu)的(de)(de)柔性(xing)化(hua)調節(jie)，顯著簡化(hua)了機(ji)(ji)械(xie)結構，提高了繞排(pai)線(xian)(xian)(xian)質量。

上述(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)系(xi)(xi)(xi)統，指(zhi)提(ti)供用電(dian)(dian)(dian)(dian)(dian)(dian)設(she)(she)(she)備(bei)的(de)(de)(de)220/380V電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，如:由(you)SGB11-RL三維立體卷鐵芯干式(shi)變(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)低壓(ya)(ya)(ya)(ya)(ya)側開始至(zhi)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)屏，由(you)屏至(zhi)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)箱(xiang)，由(you)箱(xiang)至(zhi)水(shui)泵(beng)電(dian)(dian)(dian)(dian)(dian)(dian)動機的(de)(de)(de)低壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)系(xi)(xi)(xi)統等(deng)(deng)，上述(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設(she)(she)(she)備(bei)包括了變(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)、配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)屏(箱(xiang))、電(dian)(dian)(dian)(dian)(dian)(dian)梯、水(shui)泵(beng)等(deng)(deng)，故上述(shu)(shu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)中(zhong)性(xing)點(dian)(dian)，就(jiu)(jiu)是(shi)(shi)該(gai)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)統的(de)(de)(de)中(zhong)性(xing)點(dian)(dian)，就(jiu)(jiu)是(shi)(shi)變(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)的(de)(de)(de)中(zhong)性(xing)點(dian)(dian)。顯然這(zhe)類(lei)變(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)應(ying)有兩種接(jie)(jie)地(di)(di)(di)要(yao)求.即中(zhong)性(xing)點(dian)(dian)的(de)(de)(de)直(zhi)接(jie)(jie)接(jie)(jie)地(di)(di)(di)，稱(cheng)為工作(zuo)接(jie)(jie)地(di)(di)(di);變(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)外殼接(jie)(jie)地(di)(di)(di)，稱(cheng)為保(bao)(bao)護接(jie)(jie)地(di)(di)(di)。工作(zuo)接(jie)(jie)地(di)(di)(di)的(de)(de)(de)作(zuo)用是(shi)(shi)使低壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)系(xi)(xi)(xi)統在正常工作(zuo)或事(shi)故情況(kuang)下，降低人體的(de)(de)(de)接(jie)(jie)觸電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，保(bao)(bao)障電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)設(she)(she)(she)備(bei)的(de)(de)(de)可(ke)靠(kao)動作(zuo)，迅速切斷故障設(she)(she)(she)備(bei)，降低電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)設(she)(she)(she)備(bei)和輸電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)路(lu)的(de)(de)(de)絕(jue)緣水(shui)平。保(bao)(bao)護接(jie)(jie)地(di)(di)(di)的(de)(de)(de)作(zuo)用是(shi)(shi)在電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設(she)(she)(she)備(bei)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)系(xi)(xi)(xi)統運行故障時，保(bao)(bao)障人身和設(she)(she)(she)備(bei)的(de)(de)(de)安(an)全。如何正確(que)處理上述(shu)(shu)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)站及變(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)的(de)(de)(de)工作(zuo)接(jie)(jie)地(di)(di)(di)和保(bao)(bao)護接(jie)(jie)地(di)(di)(di)，使其安(an)全可(ke)靠(kao)運行是(shi)(shi)我(wo)們(men)應(ying)該(gai)認真去研究解決(jue)的(de)(de)(de)重要(yao)內容。

SGB11-RL三(san)維(wei)立體(ti)卷鐵芯(xin)干式變壓器(qi)(qi)試電(dian)(dian)(dian)(dian)(dian)(dian)筆除能(neng)測量物體(ti)是(shi)(shi)(shi)(shi)否帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)以外(wai)，還有以下幾(ji)個用(yong)途： 一(yi)(yi)：可以測量線(xian)路中任何導(dao)線(xian)之間是(shi)(shi)(shi)(shi)否同(tong)相(xiang)(xiang)或異相(xiang)(xiang)。其方法(fa)是(shi)(shi)(shi)(shi)：站在一(yi)(yi)個與大地(di)絕緣(yuan)的(de)(de)物體(ti)上(shang)，兩(liang)手(shou)各持一(yi)(yi)支(zhi)(zhi)試電(dian)(dian)(dian)(dian)(dian)(dian)筆，然后在待測的(de)(de)兩(liang)根(gen)導(dao)線(xian)上(shang)進(jin)行測試，如(ru)果(guo)兩(liang)支(zhi)(zhi)試電(dian)(dian)(dian)(dian)(dian)(dian)筆發(fa)(fa)(fa)光很(hen)亮(liang)，則這(zhe)兩(liang)根(gen)導(dao)線(xian)是(shi)(shi)(shi)(shi)異相(xiang)(xiang)，否則即同(tong)相(xiang)(xiang)。二：可以辮別(bie)交(jiao)(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)和(he)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)。在測試時如(ru)果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)筆氖(nai)管中的(de)(de)兩(liang)個極(ji)(ji)（管的(de)(de)兩(liang)端(duan)）都發(fa)(fa)(fa)光，則是(shi)(shi)(shi)(shi)交(jiao)(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)。如(ru)果(guo)兩(liang)個極(ji)(ji)只(zhi)有一(yi)(yi)個極(ji)(ji)發(fa)(fa)(fa)光，則是(shi)(shi)(shi)(shi)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)。三(san)：可判斷直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)正(zheng)(zheng)負(fu)(fu)極(ji)(ji)。接(jie)在直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)路上(shang)測試，氖(nai)管發(fa)(fa)(fa)亮(liang)的(de)(de)一(yi)(yi)極(ji)(ji)是(shi)(shi)(shi)(shi)負(fu)(fu)極(ji)(ji)，不發(fa)(fa)(fa)亮(liang)的(de)(de)一(yi)(yi)極(ji)(ji)是(shi)(shi)(shi)(shi)正(zheng)(zheng)極(ji)(ji)。四：能(neng)判斷直流(liu)(liu)是(shi)(shi)(shi)(shi)否接(jie)地(di)。在對地(di)絕緣(yuan)的(de)(de)直流(liu)(liu)系(xi)統(tong)中，可站在地(di)上(shang)用(yong)試電(dian)(dian)(dian)(dian)(dian)(dian)筆接(jie)觸直流(liu)(liu)系(xi)統(tong)中的(de)(de)正(zheng)(zheng)極(ji)(ji)或負(fu)(fu)極(ji)(ji)，如(ru)果(guo)試電(dian)(dian)(dian)(dian)(dian)(dian)筆氖(nai)管不亮(liang)，則沒有接(jie)地(di)現(xian)象。如(ru)果(guo)發(fa)(fa)(fa)亮(liang)，則說明(ming)的(de)(de)接(jie)地(di)存在。其發(fa)(fa)(fa)亮(liang)如(ru)在筆尖一(yi)(yi)端(duan)，這(zhe)說明(ming)正(zheng)(zheng)極(ji)(ji)接(jie)地(di)。如(ru)發(fa)(fa)(fa)亮(liang)在手(shou)指一(yi)(yi)端(duan)，則是(shi)(shi)(shi)(shi)負(fu)(fu)極(ji)(ji)接(jie)地(di)。但帶(dai)接(jie)地(di)監察繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)者不在此限。

SGB11-RL三維立體卷鐵芯干式變壓器絕緣耐壓標準滿足部標
交流輸入對地：大于100兆歐
直流輸入對地：大于100兆歐
信號及輸出觸點對地：大于100兆歐
開入回路對地：大于100兆歐
能承(cheng)受2KV/1min的(de)工頻耐壓(ya)，5KV的(de)沖擊電壓(ya)。

SGB11-RL三維立體卷鐵芯干式變壓器保護的主要技術數據
一：差動速斷保護
電流(liu)元件(jian)：整定(ding)范圍(wei) 2～80A，整定(ding)級差(cha)0.01A，誤差(cha)小于(yu)±5%

時(shi)間元件(jian)：整(zheng)定(ding)范(fan)圍0～10S，整(zheng)定(ding)級差(cha)0.01S,誤差(cha)小于40ms

二：比率差動保護
差動門坎電流：整定范圍：0.5～10A，整定級差0.01A，誤差小于±5%
二次諧波制動比：整定范圍 ：0.1～0.15，制動比：固化為0.5
三：過負荷告警
電流元件：（高壓側B相電流）整定：0.5～10A，整定級差0.01A，誤差小于±5%
時間元件：整定范圍0～10S，整定級差0.01S,誤差小于40ms
四;SGB11-RL三維立體卷鐵芯干式變壓器過載起動風冷 
電流元件：整定范圍為2～80A，整定級差0.01A，誤差小于±5%
五：過載閉鎖有載調壓
電流元件：（高壓側B相電流）整定：0.5～10A，整定級差0.01A，誤差小于±5%
時間元件：整定(ding)范圍0～10S，整定(ding)級差0.01S,誤(wu)差小于40ms

以人為本、誠實守信、掙(zheng)合理利潤-----山東(dong)聊城變壓器有限公(gong)司