我們目前正在用于電纜故障的查找方法取決于:故障診斷,粗略的測試點和*三個步驟。然而，在實際測試中，往往可以確定故障類型并做出粗略的測量點，但不可能在真正的*固定點進行挖掘。這是由于我們能聽到的客觀因素(公路或建筑工地的過度振動和噪音等)。以及看不見的因素(電纜方向、電纜深度過深、水中斷層點等)。電纜施工時剩余的不規范等原因)。

因此，在(zai)礦用電纜(lan)(lan)(lan)(lan)故(gu)障檢測(ce)儀(yi)/探傷儀(yi)通(tong)過電纜(lan)(lan)(lan)(lan)施(shi)工發現電纜(lan)(lan)(lan)(lan)故(gu)障之前(qian)，運行管(guan)理者(zhe)要(yao)確定電纜(lan)(lan)(lan)(lan)長(chang)度、電纜(lan)(lan)(lan)(lan)方向、周圍特殊情況、中(zhong)間頭位(wei)置、是否有施(shi)工前(qian)電纜(lan)(lan)(lan)(lan)故(gu)障*的準備工作(zuo)。

電纜的故障類型(xing)分(fen)析(xi)：

往(wang)年找到結構特(te)點,低、中、高壓電(dian)纜(lan)(lan)故障(zhang)(zhang)分析,電(dian)纜(lan)(lan)單相(xiang)接地(di)故障(zhang)(zhang)比(bi)較(jiao)常見,主要(yao)原(yuan)因是電(dian)纜(lan)(lan)造成(cheng)損害。身體(ti)的(de)(de)質(zhi)量(liang)是不(bu)(bu)排除的(de)(de)，但這種內(nei)部短(duan)路從(cong)外(wai)部看(kan)不(bu)(bu)到痕跡是罕見的(de)(de)。電(dian)纜(lan)(lan)的(de)(de)短(duan)路故障(zhang)(zhang)較(jiao)少，這是因為相(xiang)間短(duan)路通(tong)(tong)常發(fa)生(sheng)在運行過程中。當(dang)發(fa)生(sheng)故障(zhang)(zhang)時，強短(duan)路電(dian)流會引(yin)起快速(su)斷電(dian)保護(hu)動(dong)作和跳閘。強電(dian)流引(yin)起的(de)(de)高溫通(tong)(tong)常會破壞(huai)電(dian)纜(lan)(lan)，導致(zhi)開路故障(zhang)(zhang)。內(nei)部短(duan)路,電(dian)纜(lan)(lan)外(wai)觀(guan)看(kan)不(bu)(bu)到痕跡,這樣的(de)(de)失敗是通(tong)(tong)常由電(dian)纜(lan)(lan)質(zhi)量(liang),比(bi)較(jiao)少見。

從電(dian)(dian)(dian)纜(lan)故(gu)障定位的角度(du)來看，電(dian)(dian)(dian)纜(lan)的薄弱環節是(shi)中(zhong)(zhong)(zhong)間(jian)接(jie)頭(tou)。通(tong)常，電(dian)(dian)(dian)纜(lan)有一(yi)個(ge)或(huo)多個(ge)中(zhong)(zhong)(zhong)間(jian)接(jie)頭(tou)。由于電(dian)(dian)(dian)纜(lan)中(zhong)(zhong)(zhong)間(jian)接(jie)頭(tou)制作(zuo)(zuo)時(shi)環境(jing)條件(jian)的限制，電(dian)(dian)(dian)纜(lan)敷設后缺乏防潮處理，電(dian)(dian)(dian)纜(lan)制作(zuo)(zuo)時(shi)中(zhong)(zhong)(zhong)間(jian)接(jie)頭(tou)未壓(ya)緊，可能(neng)造成(cheng)電(dian)(dian)(dian)纜(lan)中(zhong)(zhong)(zhong)間(jian)接(jie)頭(tou)受潮，出(chu)現工藝缺陷(xian)。長期在高壓(ya)電(dian)(dian)(dian)場作(zuo)(zuo)用下產(chan)生電(dian)(dian)(dian)暈和(he)自由放電(dian)(dian)(dian)，使絕緣體(ti)形成(cheng)水(shui)樹，直至絕緣老化(hua)和(he)擊穿。

隨著電(dian)(dian)(dian)纜(lan)傳輸線(xian)的(de)(de)(de)普及，電(dian)(dian)(dian)纜(lan)故障(zhang)也隨之(zhi)出(chu)現(xian)。如(ru)何有效地縮短電(dian)(dian)(dian)纜(lan)故障(zhang)查找時(shi)間(jian)直接相(xiang)關(guan)的(de)(de)(de)供電(dian)(dian)(dian)企業的(de)(de)(de)經濟效益(yi),供電(dian)(dian)(dian)可(ke)靠性(xing)和社會形象(xiang),同時(shi)也密切相(xiang)關(guan),社會生產的(de)(de)(de)發展企業,民(min)生。本文可(ke)為有線(xian)電(dian)(dian)(dian)視從(cong)業人員提(ti)供有益(yi)的(de)(de)(de)參考。它可(ke)以在發現(xian)電(dian)(dian)(dian)纜(lan)故障(zhang)的(de)(de)(de)同時(shi)縮短發現(xian)電(dian)(dian)(dian)纜(lan)故障(zhang)的(de)(de)(de)時(shi)間(jian)。同時(shi)，通(tong)過實際工作中的(de)(de)(de)學(xue)習和交流，提(ti)出(chu)了預防電(dian)(dian)(dian)纜(lan)故障(zhang)的(de)(de)(de)措施，為電(dian)(dian)(dian)網的(de)(de)(de)穩定(ding)運(yun)行打下(xia)了堅實的(de)(de)(de)基礎。