耐高溫電力電纜發展趨勢走向
更新時間：2011-06-11 點擊次數：1908
近些年(nian)來，通過(guo)引進國(guo)外成(cheng)套技術、設備和原材料(liao)，我國(guo)電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜制造業(ye)已經具備大批量(liang)工業(ye)化(hua)連續生產(chan)(chan)電(dian)(dian)(dian)(dian)壓等級從1kV至(zhi)220kV各類規格和品(pin)種交聯(lian)聚乙烯電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜的(de)能力(li)，產(chan)(chan)品(pin)不僅能夠(gou)*國(guo)內需求，而且部分出口海外。國(guo)產(chan)(chan)線纜產(chan)(chan)品(pin)質量(liang)和執行的(de)標準已與*水平接軌，絕大部分企業(ye)已通過(guo)ISO9000質量(liang)保證體系認證，為我國(guo)城鄉(xiang)電(dian)(dian)(dian)(dian)網改造提供了大量(liang)的(de)產(chan)(chan)品(pin)。其中耐高(gao)溫電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜該分支行業(ye)發展前景被一致看好。
國內電(dian)纜(lan)行(xing)業里有(you)(you)些(xie)電(dian)纜(lan)公(gong)司之所以爭上立塔生(sheng)產線，各(ge)自的(de)(de)目(mu)的(de)(de)不(bu)同，有(you)(you)的(de)(de)是(shi)確實(shi)想爭取大(da)型水(shui)力發電(dian)站和抽水(shui)蓄能電(dian)站用500kV電(dian)纜(lan)的(de)(de)訂單(dan)，為國爭光；有(you)(you)的(de)(de)只是(shi)為了做擺設，顯示自己“有(you)(you)實(shi)力”，只是(shi)做個招牌和宣傳企業度(du)的(de)(de)作用；還有(you)(you)的(de)(de)具(ju)有(you)(you)攀比心(xin)態，想在這(zhe)一方(fang)面比得過競(jing)爭對(dui)手。據了解(jie)，真正有(you)(you)能力制造500kV交聯電(dian)纜(lan)的(de)(de)公(gong)司甚(shen)少，大(da)部分是(shi)“趕時髦”之舉。
國產(chan)干(gan)式塑(su)料絕緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，主要用(yong)交(jiao)聯聚(ju)乙烯(xi)絕緣(yuan)(yuan)(yuan)，而不是用(yong)低(di)密度(du)聚(ju)乙烯(xi)絕緣(yuan)(yuan)(yuan)，而且目(mu)前還不能制造(zao)500kV級電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。今后如需進口500kV干(gan)式電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，應(ying)選用(yong)哪(na)一種絕緣(yuan)(yuan)(yuan)為(wei)好？美(mei)、日、意等(deng)國家(jia)生產(chan)的是交(jiao)聯聚(ju)乙烯(xi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，經(jing)交(jiao)聯后，電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)zui高(gao)(gao)運(yun)行溫度(du)可(ke)達90℃，傳輸容量(liang)增加很多。但在凈化度(du)很高(gao)(gao)的聚(ju)乙烯(xi)料中必(bi)須添加交(jiao)聯劑等(deng)，影響(xiang)絕緣(yuan)(yuan)(yuan)性(xing)(xing)能。法國*主張用(yong)低(di)密度(du)聚(ju)乙烯(xi)絕緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，電(dian)(dian)(dian)(dian)(dian)壓等(deng)級zui高(gao)(gao)為(wei)400kV，為(wei)滿(man)足(zu)我國訂貨要求(qiu)，已(yi)經(jing)生產(chan)出500kV電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。該電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)未經(jing)交(jiao)聯，雖然zui高(gao)(gao)運(yun)行溫度(du)只有70℃，但保證絕緣(yuan)(yuan)(yuan)有高(gao)(gao)度(du)純(chun)凈，電(dian)(dian)(dian)(dian)(dian)氣(qi)性(xing)(xing)能優良，兩(liang)者各有所(suo)長，而且相輔相成。
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