2013年2月26日山東聊城變壓器有限公司對SGB11-RL三維立體卷鐵芯干式變壓器故(gu)(gu)障(zhang)早(zao)期(qi)診斷(duan)的(de)(de)(de)(de)(de)最(zui)佳方(fang)法(fa)是(shi)油中(zhong)(zhong)氣(qi)體(ti)分(fen)(fen)析法(fa)。正常(chang)情況下(xia)(xia)充油電氣(qi)設各(ge)內的(de)(de)(de)(de)(de)絕緣(yuan)油機有(you)機絕緣(yuan)材料，在(zai)(zai)熱(re)電作用(yong)下(xia)(xia)會逐漸老化(hua)和分(fen)(fen)解(jie)，產(chan)生(sheng)少量各(ge)種(zhong)(zhong)低分(fen)(fen)子烴(jing)及二氧化(hua)碳、一(yi)(yi)(yi)氧化(hua)碳等，其大(da)(da)部分(fen)(fen)溶于(yu)油中(zhong)(zhong)。在(zai)(zai)采用(yong)C2H2/C2H4、C2H4/H2、C2H4/C2H6三(san)(san)比(bi)(bi)值(zhi)(zhi)的(de)(de)(de)(de)(de)各(ge)種(zhong)(zhong)比(bi)(bi)值(zhi)(zhi)法(fa)中(zhong)(zhong)，都是(shi)根(gen)據(ju)氣(qi)體(ti)比(bi)(bi)值(zhi)(zhi)的(de)(de)(de)(de)(de)范圍劃分(fen)(fen)區(qu)間(jian)(jian)(jian)，得出(chu)(chu)比(bi)(bi)值(zhi)(zhi)范圍的(de)(de)(de)(de)(de)編(bian)碼，對于(yu)一(yi)(yi)(yi)確(que)(que)定(ding)(ding)的(de)(de)(de)(de)(de)比(bi)(bi)值(zhi)(zhi)，其編(bian)碼是(shi)唯一(yi)(yi)(yi)確(que)(que)定(ding)(ding)的(de)(de)(de)(de)(de)。經過(guo)大(da)(da)量的(de)(de)(de)(de)(de)實踐及實例驗(yan)證，這(zhe)(zhe)種(zhong)(zhong)編(bian)碼基本上是(shi)合理的(de)(de)(de)(de)(de)。在(zai)(zai)比(bi)(bi)值(zhi)(zhi)法(fa)的(de)(de)(de)(de)(de)氣(qi)體(ti)區(qu)間(jian)(jian)(jian)劃分(fen)(fen)中(zhong)(zhong)，分(fen)(fen)界點(dian)(dian) 0.1、1、3 是(shi)根(gen)據(ju)變壓器大(da)(da)量的(de)(de)(de)(de)(de)故(gu)(gu)障(zhang)事例，并經過(guo)調查、分(fen)(fen)析、采用(yong)數(shu)學(xue)統計方(fang)法(fa)得出(chu)(chu)的(de)(de)(de)(de)(de)。顯然，臨界點(dian)(dian)的(de)(de)(de)(de)(de)值(zhi)(zhi)是(shi)一(yi)(yi)(yi)個統計值(zhi)(zhi)，具有(you)一(yi)(yi)(yi)定(ding)(ding)的(de)(de)(de)(de)(de)分(fen)(fen)散性，這(zhe)(zhe)種(zhong)(zhong)統計方(fang)法(fa)不可避免地舍棄了一(yi)(yi)(yi)些次(ci)要(yao)因素，必(bi)然就要(yao)以(yi)犧牲一(yi)(yi)(yi)定(ding)(ding)的(de)(de)(de)(de)(de)判斷(duan)準確(que)(que)度為代價。要(yao)解(jie)決(jue)此問題(ti)可將(jiang)三(san)(san)比(bi)(bi)值(zhi)(zhi)法(fa)中(zhong)(zhong)過(guo)于(yu)精(jing)確(que)(que)的(de)(de)(de)(de)(de)區(qu)間(jian)(jian)(jian)邊界模糊(hu)化(hua)，根(gen)據(ju)比(bi)(bi)值(zhi)(zhi)區(qu)間(jian)(jian)(jian)分(fen)(fen)別(bie)求取隸屬(shu)函數(shu)，再根(gen)據(ju)模式(shi)識別(bie)的(de)(de)(de)(de)(de)直接法(fa)找出(chu)(chu)不同范圍的(de)(de)(de)(de)(de)最(zui)大(da)(da)隸屬(shu)度，以(yi)確(que)(que)定(ding)(ding)二比(bi)(bi)值(zhi)(zhi)編(bian)碼，從而(er)確(que)(que)定(ding)(ding)故(gu)(gu)障(zhang)原因，三(san)(san)比(bi)(bi)值(zhi)(zhi)法(fa)中(zhong)(zhong)H2，CH4 , C2H6, C2H4 , C2H2五種(zhong)(zhong)氣(qi)體(ti)組(zu)成(cheng)的(de)(de)(de)(de)(de)C2H2/ C2H4, CH4 /H2，C2H4/ C2H6三(san)(san)個比(bi)(bi)值(zhi)(zhi)。每個比(bi)(bi)值(zhi)(zhi)同它的(de)(de)(de)(de)(de)各(ge)個確(que)(que)定(ding)(ding)編(bian)碼區(qu)間(jian)(jian)(jian)的(de)(de)(de)(de)(de)關系可以(yi)用(yong)特征函數(shu)來表示。

2013年2月26日，山東(dong)聊城變(bian)壓(ya)器(qi)有限公司(si)在(zai)對1號機(ji)組c相(xiang)SGB11-RL三維立體卷(juan)鐵(tie)(tie)(tie)芯干(gan)式變(bian)壓(ya)器(qi)進(jin)行內部檢查時(第一(yi)次換料大修期(qi)間(jian)(jian))，發(fa)現(xian)變(bian)壓(ya)器(qi)旁(pang)扼鐵(tie)(tie)(tie)心藍色綁(bang)扎(zha)(zha)(zha)帶(dai)(dai)出現(xian)移位(wei)，繞(rao)(rao)(rao)組圍(wei)屏綁(bang)扎(zha)(zha)(zha)帶(dai)(dai)松脫，繞(rao)(rao)(rao)組下壓(ya)板處絕(jue)緣(yuan)墊塊移位(wei)，鐵(tie)(tie)(tie)心拉板和(he)夾(jia)件之(zhi)間(jian)(jian)的(de)兩孔絕(jue)緣(yuan)墊塊脫落(luo)，夾(jia)梁(liang)與側梁(liang)之(zhi)間(jian)(jian)有一(yi)螺栓及(ji)其墊圈脫落(luo)、箱底座(zuo)上有一(yi)扎(zha)(zha)(zha)絕(jue)緣(yuan)紙(zhi)和(he)鐵(tie)(tie)(tie)砂(sha)等(deng)異常現(xian)象。隨后在(zai)對A相(xiang)變(bian)壓(ya)器(qi)的(de)檢查中，同樣發(fa)現(xian)存(cun)在(zai)旁(pang)扼鐵(tie)(tie)(tie)心藍色綁(bang)扎(zha)(zha)(zha)帶(dai)(dai)移位(wei)和(he)一(yi)些保(bao)護紙(zhi)以及(ji)繞(rao)(rao)(rao)組圍(wei)屏綁(bang)扎(zha)(zha)(zha)帶(dai)(dai)松脫等(deng)現(xian)象。在(zai)主變(bian)壓(ya)器(qi)13相(xiang)的(de)內部檢查中，除發(fa)現(xian)繞(rao)(rao)(rao)組和(he)鐵(tie)(tie)(tie)心的(de)綁(bang)扎(zha)(zha)(zha)帶(dai)(dai)各有一(yi)根松脫外(wai)，還發(fa)現(xian)一(yi)個鐵(tie)(tie)(tie)心旁(pang)柱彎(wan)曲(qu)變(bian)形，彎(wan)曲(qu)距離約有90mm。

山東(dong)聊城變壓(ya)器(qi)有限公司討論(lun)為繞制(zhi)630kV*A及以下SGB11-RL三維(wei)立(li)體卷(juan)(juan)鐵芯(xin)干(gan)式變壓(ya)器(qi)高(gao)低(di)壓(ya)圓筒(tong)式線(xian)(xian)圈(quan)“低(di)壓(ya)0.4KV，高(gao)壓(ya)3-35KVA)設計的臥(wo)式繞線(xian)(xian)機(ji)。采用變頻(pin)調速控(kong)制(zhi)卷(juan)(juan)繞機(ji)構，伺服傳動控(kong)制(zhi)排線(xian)(xian)機(ji)構，RS一485總(zong)線(xian)(xian)實現PLC與變頻(pin)器(qi)和伺服放大器(qi)之間的通信。根據(ju)繞制(zhi)產品的不(bu)同，在不(bu)改(gai)變任何機(ji)械(xie)參數(shu)(shu)(shu)的條件(jian)下，通過數(shu)(shu)(shu)字(zi)控(kong)制(zhi)系統(tong)參數(shu)(shu)(shu)設置，討論(lun)各種參數(shu)(shu)(shu)的柔性化(hua)調節，顯著簡化(hua)了(le)機(ji)械(xie)結構，提高(gao)了(le)繞排線(xian)(xian)質(zhi)量(liang)。

上(shang)述(shu)(shu)電(dian)(dian)(dian)(dian)源(yuan)系(xi)(xi)統(tong)，指提供用電(dian)(dian)(dian)(dian)設(she)(she)(she)備(bei)(bei)的(de)220/380V電(dian)(dian)(dian)(dian)源(yuan)，如:由SGB11-RL三維(wei)立體卷鐵芯干(gan)式變(bian)(bian)(bian)壓(ya)器(qi)(qi)低壓(ya)側開(kai)始至(zhi)配(pei)(pei)電(dian)(dian)(dian)(dian)屏(ping)，由屏(ping)至(zhi)配(pei)(pei)電(dian)(dian)(dian)(dian)箱(xiang)(xiang)，由箱(xiang)(xiang)至(zhi)水泵(beng)電(dian)(dian)(dian)(dian)動(dong)機的(de)低壓(ya)電(dian)(dian)(dian)(dian)源(yuan)系(xi)(xi)統(tong)等，上(shang)述(shu)(shu)電(dian)(dian)(dian)(dian)氣設(she)(she)(she)備(bei)(bei)包括(kuo)了變(bian)(bian)(bian)壓(ya)器(qi)(qi)、配(pei)(pei)電(dian)(dian)(dian)(dian)屏(ping)(箱(xiang)(xiang))、電(dian)(dian)(dian)(dian)梯(ti)、水泵(beng)等，故上(shang)述(shu)(shu)的(de)電(dian)(dian)(dian)(dian)源(yuan)中性(xing)點(dian)(dian)，就是(shi)(shi)該配(pei)(pei)電(dian)(dian)(dian)(dian)系(xi)(xi)統(tong)的(de)中性(xing)點(dian)(dian)，就是(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)中性(xing)點(dian)(dian)。顯然這類變(bian)(bian)(bian)壓(ya)器(qi)(qi)應有(you)兩種接(jie)地(di)(di)要(yao)求.即中性(xing)點(dian)(dian)的(de)直接(jie)接(jie)地(di)(di)，稱為工作(zuo)(zuo)接(jie)地(di)(di);變(bian)(bian)(bian)壓(ya)器(qi)(qi)外殼接(jie)地(di)(di)，稱為保(bao)護接(jie)地(di)(di)。工作(zuo)(zuo)接(jie)地(di)(di)的(de)作(zuo)(zuo)用是(shi)(shi)使低壓(ya)電(dian)(dian)(dian)(dian)源(yuan)系(xi)(xi)統(tong)在正(zheng)常(chang)工作(zuo)(zuo)或事故情(qing)況下，降(jiang)低人(ren)體的(de)接(jie)觸電(dian)(dian)(dian)(dian)壓(ya)，保(bao)障電(dian)(dian)(dian)(dian)器(qi)(qi)設(she)(she)(she)備(bei)(bei)的(de)可靠(kao)動(dong)作(zuo)(zuo)，迅速切斷故障設(she)(she)(she)備(bei)(bei)，降(jiang)低電(dian)(dian)(dian)(dian)器(qi)(qi)設(she)(she)(she)備(bei)(bei)和輸電(dian)(dian)(dian)(dian)線(xian)路(lu)的(de)絕緣(yuan)水平。保(bao)護接(jie)地(di)(di)的(de)作(zuo)(zuo)用是(shi)(shi)在電(dian)(dian)(dian)(dian)氣設(she)(she)(she)備(bei)(bei)電(dian)(dian)(dian)(dian)源(yuan)系(xi)(xi)統(tong)運行故障時，保(bao)障人(ren)身和設(she)(she)(she)備(bei)(bei)的(de)安全。如何正(zheng)確處理上(shang)述(shu)(shu)配(pei)(pei)電(dian)(dian)(dian)(dian)站及變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)工作(zuo)(zuo)接(jie)地(di)(di)和保(bao)護接(jie)地(di)(di)，使其安全可靠(kao)運行是(shi)(shi)我(wo)們應該認真(zhen)去研究(jiu)解決的(de)重要(yao)內容。

SGB11-RL三(san)維立體(ti)卷鐵芯(xin)干式變壓(ya)器(qi)試(shi)電(dian)(dian)(dian)(dian)筆(bi)(bi)除能測(ce)(ce)量(liang)物(wu)體(ti)是(shi)否帶(dai)電(dian)(dian)(dian)(dian)以外，還有(you)(you)以下(xia)幾個(ge)(ge)用途： 一(yi)(yi)(yi)(yi)：可以測(ce)(ce)量(liang)線(xian)路中任何(he)導(dao)線(xian)之間是(shi)否同相(xiang)或異相(xiang)。其方(fang)法是(shi)：站在(zai)(zai)(zai)一(yi)(yi)(yi)(yi)個(ge)(ge)與大地(di)絕緣(yuan)的(de)(de)(de)(de)物(wu)體(ti)上，兩(liang)(liang)手各持一(yi)(yi)(yi)(yi)支試(shi)電(dian)(dian)(dian)(dian)筆(bi)(bi)，然后在(zai)(zai)(zai)待測(ce)(ce)的(de)(de)(de)(de)兩(liang)(liang)根(gen)導(dao)線(xian)上進行測(ce)(ce)試(shi)，如(ru)果(guo)(guo)(guo)兩(liang)(liang)支試(shi)電(dian)(dian)(dian)(dian)筆(bi)(bi)發(fa)(fa)(fa)光很(hen)亮(liang)，則(ze)(ze)(ze)這兩(liang)(liang)根(gen)導(dao)線(xian)是(shi)異相(xiang)，否則(ze)(ze)(ze)即同相(xiang)。二：可以辮別交流(liu)(liu)電(dian)(dian)(dian)(dian)和直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)。在(zai)(zai)(zai)測(ce)(ce)試(shi)時如(ru)果(guo)(guo)(guo)電(dian)(dian)(dian)(dian)筆(bi)(bi)氖管(guan)中的(de)(de)(de)(de)兩(liang)(liang)個(ge)(ge)極(ji)（管(guan)的(de)(de)(de)(de)兩(liang)(liang)端(duan)）都發(fa)(fa)(fa)光，則(ze)(ze)(ze)是(shi)交流(liu)(liu)電(dian)(dian)(dian)(dian)。如(ru)果(guo)(guo)(guo)兩(liang)(liang)個(ge)(ge)極(ji)只有(you)(you)一(yi)(yi)(yi)(yi)個(ge)(ge)極(ji)發(fa)(fa)(fa)光，則(ze)(ze)(ze)是(shi)直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)。三(san)：可判斷直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)正(zheng)負極(ji)。接(jie)(jie)(jie)在(zai)(zai)(zai)直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)路上測(ce)(ce)試(shi)，氖管(guan)發(fa)(fa)(fa)亮(liang)的(de)(de)(de)(de)一(yi)(yi)(yi)(yi)極(ji)是(shi)負極(ji)，不(bu)發(fa)(fa)(fa)亮(liang)的(de)(de)(de)(de)一(yi)(yi)(yi)(yi)極(ji)是(shi)正(zheng)極(ji)。四：能判斷直(zhi)(zhi)流(liu)(liu)是(shi)否接(jie)(jie)(jie)地(di)。在(zai)(zai)(zai)對(dui)地(di)絕緣(yuan)的(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)系統(tong)中，可站在(zai)(zai)(zai)地(di)上用試(shi)電(dian)(dian)(dian)(dian)筆(bi)(bi)接(jie)(jie)(jie)觸直(zhi)(zhi)流(liu)(liu)系統(tong)中的(de)(de)(de)(de)正(zheng)極(ji)或負極(ji)，如(ru)果(guo)(guo)(guo)試(shi)電(dian)(dian)(dian)(dian)筆(bi)(bi)氖管(guan)不(bu)亮(liang)，則(ze)(ze)(ze)沒有(you)(you)接(jie)(jie)(jie)地(di)現象。如(ru)果(guo)(guo)(guo)發(fa)(fa)(fa)亮(liang)，則(ze)(ze)(ze)說明的(de)(de)(de)(de)接(jie)(jie)(jie)地(di)存在(zai)(zai)(zai)。其發(fa)(fa)(fa)亮(liang)如(ru)在(zai)(zai)(zai)筆(bi)(bi)尖一(yi)(yi)(yi)(yi)端(duan)，這說明正(zheng)極(ji)接(jie)(jie)(jie)地(di)。如(ru)發(fa)(fa)(fa)亮(liang)在(zai)(zai)(zai)手指一(yi)(yi)(yi)(yi)端(duan)，則(ze)(ze)(ze)是(shi)負極(ji)接(jie)(jie)(jie)地(di)。但帶(dai)接(jie)(jie)(jie)地(di)監察繼電(dian)(dian)(dian)(dian)器(qi)者(zhe)不(bu)在(zai)(zai)(zai)此限(xian)。

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(neng)承受2KV/1min的工(gong)頻耐壓，5KV的沖(chong)擊電壓。

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
電流元件：整定范圍 2～80A，整定級差0.01A，誤差小(xiao)于±5%

時間元件(jian)：整定范圍0～10S，整定級差0.01S,誤(wu)差小于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：整定范圍0～10S，整定級差0.01S,誤差小于40ms

以人(ren)為本、誠實守信(xin)、掙合理利潤-----山(shan)東聊城變壓器(qi)有限(xian)公(gong)司