在各種傳(chuan)感器(qi)技術中,光(guang)(guang)纖傳(chuan)感器(qi)近幾年(nian)發展迅速,目前已經能夠用(yong)(yong)(yong)(yong)光(guang)(guang)纖傳(chuan)感器(qi)實現壓力(li)、溫度、振動、電流(liu)、電壓、磁場等物(wu)理量檢測,這些應用(yong)(yong)(yong)(yong)都歸功于光(guang)(guang)纖,具有體(ti)積小(xiao)與重量輕帶來(lai)的結構(gou)簡單(dan)、使(shi)用(yong)(yong)(yong)(yong)方便(bian),耐高壓、耐高溫和抗電磁干(gan)擾(rao)等特點(dian)以(yi)及長(chang)的作用(yong)(yong)(yong)(yong)距離帶來(lai)的高靈敏度。

分(fen)布式光(guang)(guang)(guang)纖(xian)(xian)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)系(xi)統便是這(zhe)(zhe)樣一種用(yong)(yong)于(yu)實時測(ce)(ce)(ce)量(liang)空間溫(wen)(wen)(wen)度(du)(du)場(chang)分(fen)布的(de)(de)(de)高新技(ji)術產品，它(ta)不僅具(ju)有普通光(guang)(guang)(guang)纖(xian)(xian)傳(chuan)(chuan)感(gan)器(qi)的(de)(de)(de)優點,還(huan)具(ju)有對光(guang)(guang)(guang)纖(xian)(xian)沿(yan)(yan)線各點的(de)(de)(de)溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)分(fen)布式傳(chuan)(chuan)感(gan)能力(li)。它(ta)可(ke)以連續實時測(ce)(ce)(ce)量(liang)光(guang)(guang)(guang)纖(xian)(xian)沿(yan)(yan)線幾公里內(nei)各點的(de)(de)(de)溫(wen)(wen)(wen)度(du)(du)，定位精(jing)度(du)(du)可(ke)達米的(de)(de)(de)量(liang)級(ji),測(ce)(ce)(ce)溫(wen)(wen)(wen)精(jing)度(du)(du)可(ke)達1°的(de)(de)(de)水平非常適用(yong)(yong)于(yu)大范圍多點測(ce)(ce)(ce)溫(wen)(wen)(wen)的(de)(de)(de)應用(yong)(yong)場(chang)合。因此這(zhe)(zhe)種光(guang)(guang)(guang)纖(xian)(xian)傳(chuan)(chuan)感(gan)器(qi)在高壓電(dian)力(li)電(dian)纜、大型發電(dian)機定子、大型變壓器(qi)、鍋(guo)爐等設(she)施的(de)(de)(de)溫(wen)(wen)(wen)度(du)(du)定點傳(chuan)(chuan)感(gan)場(chang)合具(ju)有廣泛的(de)(de)(de)應用(yong)(yong),因為在這(zhe)(zhe)些場(chang)合如果采用(yong)(yong)傳(chuan)(chuan)統分(fen)散式的(de)(de)(de)傳(chuan)(chuan)感(gan)器(qi)逐點監測(ce)(ce)(ce),不僅安(an)裝困難,而(er)且整個系(xi)統會結構龐大,使用(yong)(yong)不便,電(dian)力(li)設(she)施的(de)(de)(de)強(qiang)電(dian)磁干擾也會影響測(ce)(ce)(ce)量(liang)的(de)(de)(de)可(ke)靠性。

分布式光(guang)纖溫度故障預警在(zai)(zai)線監(jian)測系(xi)統是(shi)針對(dui)電(dian)(dian)(dian)力變電(dian)(dian)(dian)高(gao)壓(ya)設備(bei)安全監(jian)控進行軟件二次開發(fa)形成的。此系(xi)統實時監(jian)測電(dian)(dian)(dian)力變電(dian)(dian)(dian)高(gao)壓(ya)設備(bei)溫度變化過程,在(zai)(zai)日本(ben)、德國等幾個工業發(fa)達國家(jia),該系(xi)統已(yi)(yi)在(zai)(zai)高(gao)壓(ya)電(dian)(dian)(dian)纜取得(de)應用(yong)效果(guo),但對(dui)變電(dian)(dian)(dian)站控制屏設備(bei)應用(yong)國外(wai)還沒(mei)有應用(yong)實例。在(zai)(zai)我國,目(mu)前已(yi)(yi)有多個電(dian)(dian)(dian)力變電(dian)(dian)(dian)控制屏設備(bei)應用(yong)實例，并取得(de)了良(liang)好的效果(guo)，通(tong)過連續(xu)測量(liang)高(gao)壓(ya)設備(bei)的溫度情(qing)況可(ke)以(yi)預測電(dian)(dian)(dian)器過熱故障及預警火災事故發(fa)生。由于(yu)光(guang)纖抗電(dian)(dian)(dian)磁(ci)干擾和輻射用(yong)于(yu)高(gao)壓(ya)電(dian)(dian)(dian)器設備(bei)監(jian)測更為合適。軟件二次開發(fa)后，本(ben)系(xi)統的主要(yao)功能如下(xia):

(1實時數據采集

從(cong)監(jian)控高(gao)壓電器設備逐點(dian)實時采集溫(wen)度，形成實時數據庫，通過數據準確(que)確(que)定(ding)過熱位置(zhi),指導檢修工作。

(2實時數據顯示

顯(xian)示(shi)所監控(kong)高壓電器設備逐點采集(ji)得(de)到的實時溫度,做到設備過熱故(gu)障的早(zao)期預(yu)測,預(yu)防于(yu)未然(ran)。

(3超溫報警

根據(ju)用戶要求(qiu)設(she)置(zhi)(zhi)報(bao)警(jing)和預警(jing)溫度，并可對(dui)被監(jian)控高壓電器設(she)備逐點按(an)段設(she)置(zhi)(zhi)不同(tong)分區，每個(ge)分區可以(yi)任意設(she)置(zhi)(zhi)報(bao)警(jing)值(zhi)、對(dui)不同(tong)的部位進行不同(tong)標準(zhun)的監(jian)控。

(4升溫速率報警

對被監控高(gao)壓電器(qi)設(she)備達到用(yong)戶要求設(she)置的升溫(wen)速率(lv)預定值(zhi)時,可以報警,指(zhi)出報警設(she)備位置、數據(ju)儲存和打印。

(5歷史數據顯示

用戶可以通(tong)過歷史數據查(cha)詢得(de)監控(kong)點(dian)到某(mou)時(shi)某(mou)刻溫度、某(mou)天(tian)某(mou)點(dian)的溫度變化曲(qu)線、某(mou)天(tian)最高(gao)(gao)溫度分布曲(qu)線、某(mou)天(tian)最高(gao)(gao)溫度分布曲(qu)線和某(mou)時(shi)段某(mou)點(dian)的最高(gao)(gao)溫度。