變(bian)(bian)壓(ya)(ya)器(qi)(qi)是(shi)我國電(dian)力(li)系(xi)統的(de)(de)(de)核(he)心設備，其(qi)(qi)可靠性(xing)(xing)直接影響電(dian)力(li)系(xi)統的(de)(de)(de)安(an)(an)(an)全(quan)性(xing)(xing)和(he)可靠性(xing)(xing)，變(bian)(bian)壓(ya)(ya)器(qi)(qi)一旦發(fa)生故障(zhang)，很容易造(zao)成(cheng)(cheng)電(dian)網的(de)(de)(de)崩潰，很大程度(du)的(de)(de)(de)影響我們的(de)(de)(de)生產和(he)生活，造(zao)成(cheng)(cheng)巨大的(de)(de)(de)經(jing)濟損(sun)失，因此對于變(bian)(bian)壓(ya)(ya)器(qi)(qi)的(de)(de)(de)及時檢測(ce)(ce)和(he)維修顯得極(ji)其(qi)(qi)重(zhong)要，電(dian)力(li)器(qi)(qi)件本身由于某些原(yuan)因，會造(zao)成(cheng)(cheng)電(dian)力(li)柜內(nei)溫(wen)(wen)(wen)度(du)升(sheng)高，由于溫(wen)(wen)(wen)度(du)的(de)(de)(de)升(sheng)高，不僅(jin)影響其(qi)(qi)它元器(qi)(qi)件的(de)(de)(de)正(zheng)常工(gong)作(zuo)(zuo)，更可能造(zao)成(cheng)(cheng)一定的(de)(de)(de)安(an)(an)(an)全(quan)事故，只有保持電(dian)力(li)柜及元器(qi)(qi)件的(de)(de)(de)工(gong)作(zuo)(zuo)溫(wen)(wen)(wen)度(du)在安(an)(an)(an)全(quan)范圍，才能保證電(dian)變(bian)(bian)壓(ya)(ya)器(qi)(qi)正(zheng)常工(gong)作(zuo)(zuo)，目前市面(mian)上使用的(de)(de)(de)變(bian)(bian)壓(ya)(ya)器(qi)(qi)溫(wen)(wen)(wen)度(du)監(jian)測(ce)(ce)系(xi)統很多安(an)(an)(an)全(quan)性(xing)(xing)較(jiao)差(cha)，測(ce)(ce)溫(wen)(wen)(wen)效果不佳，其(qi)(qi)輸(shu)出信號會受到光纖(xian)傳輸(shu)損(sun)耗、接續損(sun)耗、光纖(xian)震動(dong)和(he)多重(zhong)外界環境(jing)因素影響，造(zao)成(cheng)(cheng)傳感器(qi)(qi)探測(ce)(ce)到的(de)(de)(de)信號很弱(ruo)，溫(wen)(wen)(wen)度(du)分辨率不高，穩定性(xing)(xing)較(jiao)差(cha)，不僅(jin)增加(jia)了成(cheng)(cheng)本和(he)維護(hu)工(gong)作(zuo)(zuo)量，還會造(zao)成(cheng)(cheng)一系(xi)列的(de)(de)(de)安(an)(an)(an)全(quan)隱(yin)患。

電(dian)力變(bian)壓(ya)(ya)器(qi)是電(dian)力系統(tong)中最重(zhong)要(yao)的(de)(de)電(dian)氣設(she)備，促使(shi)電(dian)力變(bian)壓(ya)(ya)器(qi)絕(jue)緣老化(hua)(hua)的(de)(de)主要(yao)因素是溫(wen)度(du)(du)(du)、水分和(he)(he)氧氣。水分和(he)(he)氧氣是基(ji)礎，溫(wen)度(du)(du)(du)是催化(hua)(hua)劑(ji)。變(bian)壓(ya)(ya)器(qi)帶負載時，熱效(xiao)應的(de)(de)作用更為突出，熱效(xiao)應是變(bian)壓(ya)(ya)器(qi)帶負載能力的(de)(de)決(jue)定(ding)性(xing)因素。而對于油浸(jin)式(shi)變(bian)壓(ya)(ya)器(qi)來說，繞(rao)(rao)組溫(wen)度(du)(du)(du)直(zhi)接決(jue)定(ding)變(bian)壓(ya)(ya)器(qi)的(de)(de)運行(xing)安全和(he)(he)老化(hua)(hua)率，而繞(rao)(rao)組溫(wen)度(du)(du)(du)監(jian)測(ce)(ce)(ce)一直(zhi)是重(zhong)點(dian)和(he)(he)難點(dian)，傳統(tong)的(de)(de)測(ce)(ce)(ce)量方式(shi)有間接測(ce)(ce)(ce)量和(he)(he)直(zhi)接測(ce)(ce)(ce)量兩種。間接測(ce)(ce)(ce)量存(cun)在實時性(xing)差和(he)(he)準確性(xing)低的(de)(de)缺(que)陷(xian)。傳統(tong)的(de)(de)直(zhi)接測(ce)(ce)(ce)量是使(shi)用電(dian)阻溫(wen)度(du)(du)(du)計，熱電(dian)偶測(ce)(ce)(ce)量，這種方法(fa)的(de)(de)缺(que)點(dian)是電(dian)信號易受電(dian)磁干擾，且會影響變(bian)壓(ya)(ya)器(qi)內部絕(jue)緣性(xing)，測(ce)(ce)(ce)量結(jie)果不(bu)準確。

油浸式變壓器溫度監測系統

變壓(ya)器(qi)是電(dian)(dian)力(li)(li)(li)設施(shi)中的(de)(de)一(yi)種重(zhong)要(yao)電(dian)(dian)力(li)(li)(li)設備，處于長(chang)期(qi)運(yun)(yun)行(xing)過程中的(de)(de)變壓(ya)器(qi)會(hui)因為各種原因導致(zhi)故(gu)障的(de)(de)發生(sheng)，一(yi)旦(dan)發生(sheng)故(gu)障將(jiang)要(yao)求電(dian)(dian)力(li)(li)(li)搶修工人立(li)即前往(wang)，以便盡快投(tou)入搶修，保(bao)障電(dian)(dian)力(li)(li)(li)線路的(de)(de)正常運(yun)(yun)行(xing)。其(qi)(qi)中溫(wen)(wen)度是影響變壓(ya)器(qi)正常運(yun)(yun)行(xing)的(de)(de)重(zhong)要(yao)因素，當變壓(ya)器(qi)的(de)(de)運(yun)(yun)行(xing)溫(wen)(wen)度超限時極易(yi)發生(sheng)變壓(ya)器(qi)過溫(wen)(wen)燒毀(hui)事(shi)故(gu)，如此(ci)不僅帶(dai)來巨大的(de)(de)經(jing)濟損失，還(huan)會(hui)造成該(gai)配(pei)電(dian)(dian)臺區供電(dian)(dian)范圍內的(de)(de)長(chang)時間停電(dian)(dian)，因此(ci)有必要(yao)對(dui)配(pei)電(dian)(dian)變壓(ya)器(qi)的(de)(de)運(yun)(yun)行(xing)溫(wen)(wen)度進行(xing)實(shi)時監測，并將(jiang)溫(wen)(wen)度信息存(cun)(cun)儲起來分析，以便在(zai)發現配(pei)電(dian)(dian)變壓(ya)器(qi)存(cun)(cun)在(zai)運(yun)(yun)行(xing)溫(wen)(wen)度的(de)(de)安全隱患時，可(ke)及時對(dui)其(qi)(qi)運(yun)(yun)行(xing)工況進行(xing)相(xiang)應調(diao)整，從而避免所述(shu)變壓(ya)器(qi)過溫(wen)(wen)燒毀(hui)事(shi)故(gu)的(de)(de)發生(sheng)。

電力變壓器測溫方式

電(dian)(dian)(dian)力變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)作(zuo)為電(dian)(dian)(dian)網(wang)運行中的(de)(de)關鍵設備(bei)，其可靠性在電(dian)(dian)(dian)網(wang)運行中極其重要。變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)內(nei)部的(de)(de)溫度(du)(du)變(bian)(bian)(bian)化可以直(zhi)觀迅速的(de)(de)反(fan)應(ying)出其運行狀態(tai)，但是(shi)常規(gui)的(de)(de)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)溫控器(qi)(qi)都不(bu)是(shi)直(zhi)接(jie)接(jie)觸測量變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)內(nei)部溫度(du)(du)的(de)(de)，而是(shi)把測溫探(tan)頭放(fang)置在變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)頂部，其所得到(dao)的(de)(de)溫度(du)(du)值是(shi)通(tong)過對(dui)(dui)測定的(de)(de)油溫進行電(dian)(dian)(dian)子換算產生(sheng)的(de)(de)，不(bu)能精確反(fan)應(ying)繞組溫度(du)(du)，這對(dui)(dui)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)在使用(yong)過程中發生(sheng)的(de)(de)狀況也不(bu)能及(ji)時反(fan)應(ying)，進而不(bu)能自動控制和處理(li)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)發生(sheng)的(de)(de)故障。電(dian)(dian)(dian)信號傳感器(qi)(qi)測量法(fa)，如熱電(dian)(dian)(dian)偶、熱電(dian)(dian)(dian)阻等，該類傳感器(qi)(qi)易受(shou)電(dian)(dian)(dian)磁干(gan)擾，且使用(yong)壽命有限，測量效果(guo)不(bu)太理(li)想。紅外測溫法(fa)，該方法(fa)為非接(jie)觸測量，便(bian)于人工操作(zuo)，但無法(fa)實現在線實時測量，且易受(shou)背景(jing)噪(zao)聲及(ji)電(dian)(dian)(dian)磁環境干(gan)擾。

如果(guo)能實時監(jian)測高(gao)壓隔(ge)(ge)離(li)(li)開(kai)關的(de)運行狀(zhuang)態，便能及時發現(xian)各種 故障產生的(de)原因，并采取必要(yao)措施，確保(bao)早(zao)期發現(xian)事故隱患點，避免高(gao)壓隔(ge)(ge)離(li)(li)開(kai)關遭(zao)受(shou)破(po)壞，大大延(yan)長其使用壽命，早(zao)期排除隱患從而(er)消除事故提(ti)供(gong)可(ke)靠(kao)的(de)安(an)全(quan)空間(jian)，進而(er)提(ti)高(gao)電力系(xi)統的(de)安(an)全(quan)性和可(ke)靠(kao)性。

變壓器熒光光纖測溫系統

福州華(hua)光天銳光電(dian)(dian)(dian)科技有限公司將熒光光纖(xian)測(ce)(ce)溫技術引入到變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)(qi)中，實(shi)現(xian)了變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)(qi)內部(bu)溫度(du)(du)的(de)(de)分布式在線監(jian)測(ce)(ce)，可(ke)(ke)以實(shi)時(shi)監(jian)測(ce)(ce)定位熱點溫度(du)(du)，大(da)(da)大(da)(da)提高了檢測(ce)(ce)的(de)(de)靈敏度(du)(du)和可(ke)(ke)靠性(xing)。變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)(qi)光纖(xian)型繞組溫度(du)(du)在線監(jian)測(ce)(ce)系(xi)統能(neng)夠直接、實(shi)時(shi)、準確(que)地測(ce)(ce)量繞組溫度(du)(du)，實(shi)現(xian)對變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)(qi)內部(bu)溫度(du)(du)監(jian)控，準確(que)測(ce)(ce)量變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)(qi)繞組的(de)(de)溫度(du)(du)，實(shi)時(shi)控制風扇(shan)、冷卻泵等冷卻系(xi)統，大(da)(da)大(da)(da)延長(chang)電(dian)(dian)(dian)力(li)設備變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)(qi)使(shi)用(yong)壽(shou)命、在高峰負荷時(shi)保障電(dian)(dian)(dian)力(li)供應并使(shi)非計劃(hua)性(xing)或突發(fa)性(xing)事(shi)故降到低程度(du)(du)，從而以小(xiao)成本改善(shan)電(dian)(dian)(dian)力(li)生產，提高整個系(xi)統運(yun)行的(de)(de)安全性(xing)和可(ke)(ke)靠性(xing)。