電線電纜作為國民經濟中最大的配套行業之一，是各產業的基礎，其產品廣泛應用于電力、建筑、民用、通信、船舶、軍工、航空以及石油化工等領域。電線電纜按用途可分為電力電纜、電氣裝備電纜、繞組線、裸電線、通信電纜和電線及電纜配件，從2017年我國電線電纜行業細分市場規模占比情況來看，花線廠家電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)占(zhan)據電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)業(ye)(ye)(ye)務的(de)最大部(bu)分，規模(mo)占(zhan)比(bi)35.7%，其(qi)次是(shi)電(dian)(dian)(dian)氣(qi)裝(zhuang)備(bei)電(dian)(dian)(dian)纜(lan)(lan)、繞(rao)組線(xian)(xian)，分別占(zhan)比(bi)20%和15.7%。近年(nian)來(lai)，我(wo)國(guo)電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)行業(ye)(ye)(ye)保持了較快發(fa)展勢(shi)頭(tou)，作為國(guo)民經濟(ji)的(de)最重要的(de)支撐產業(ye)(ye)(ye)之一，電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)行業(ye)(ye)(ye)在中(zhong)國(guo)有著廣闊(kuo)的(de)市場(chang)。根據近幾年(nian)的(de)情況(kuang)來(lai)看(kan)，我(wo)國(guo)電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)行業(ye)(ye)(ye)銷(xiao)(xiao)售收(shou)入(ru)總體呈現上(shang)升趨(qu)勢(shi)，其(qi)中(zhong)2016年(nian)銷(xiao)(xiao)售收(shou)入(ru)創新高(gao)達(da)13924億(yi)元，2017年(nian)電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)銷(xiao)(xiao)售收(shou)入(ru)出現小(xiao)幅下降，為13513億(yi)元。隨著我(wo)國(guo)對基(ji)礎設施投入(ru)的(de)加(jia)大，以及新能源、軍工(gong)、海洋工(gong)程、軌道交(jiao)通、特(te)高(gao)壓、智能電(dian)(dian)(dian)網的(de)發(fa)展得到進一步貫徹落(luo)實，市場(chang)對電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)的(de)需求(qiu)在不斷增(zeng)強(qiang)，尤(you)其(qi)是(shi)在高(gao)端裝(zhuang)備(bei)用電(dian)(dian)(dian)纜(lan)(lan)方(fang)面，未(wei)來(lai)我(wo)國(guo)電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)(lan)行業(ye)(ye)(ye)銷(xiao)(xiao)售收(shou)入(ru)仍(reng)將進一步增(zeng)加(jia)。

近日，重慶市能源局、專業生產花線國網重(zhong)慶(qing)市電力公(gong)司處消息稱(cheng)，白(bai)(bai)鶴灘-江(jiang)蘇(su)(su)(su)±800kV特(te)(te)高壓(ya)直(zhi)(zhi)流(liu)輸(shu)(shu)電工(gong)程(cheng)即(ji)將開(kai)建。該(gai)線(xian)路(lu)綜合(he)航空直(zhi)(zhi)線(xian)長度1783公(gong)里(li)，途經四(si)川(chuan)、重(zhong)慶(qing)、湖北、安徽、江(jiang)蘇(su)(su)(su)五省份。據介(jie)紹，白(bai)(bai)鶴灘-江(jiang)蘇(su)(su)(su)±800kV特(te)(te)高壓(ya)直(zhi)(zhi)流(liu)輸(shu)(shu)電工(gong)程(cheng)起于四(si)川(chuan)省涼山州的(de)布拖換流(liu)站(zhan)（先鋒站(zhan)址），止于江(jiang)蘇(su)(su)(su)省蘇(su)(su)(su)州市的(de)虞山換流(liu)站(zhan)（羅家浜站(zhan)址），輸(shu)(shu)送(song)(song)容量800萬千瓦，送(song)(song)電距(ju)離約2172公(gong)里(li)。該(gai)特(te)(te)高壓(ya)直(zhi)(zhi)流(liu)輸(shu)(shu)電工(gong)程(cheng)重(zhong)慶(qing)段依次途經永川(chuan)、江(jiang)津、綦江(jiang)、巴南、南川(chuan)、武(wu)隆、彭水和黔江(jiang)8個區縣，線(xian)路(lu)長度約329公(gong)里(li)，目前重(zhong)慶(qing)段已取齊(qi)了(le)核準要(yao)件，完成了(le)設計(ji)終堪(kan)定位工(gong)作，預計(ji)將于今年(nian)6月開(kai)工(gong)。

專業生產花線電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)使(shi)用(yong)期限的(de)(de)長短，取決于電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)質量和電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)安裝(zhuang)的(de)(de)環(huan)(huan)境(jing)、使(shi)用(yong)環(huan)(huan)境(jing)。電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)主要靠外(wai)面一(yi)層包(bao)皮絕(jue)緣(yuan)(yuan)，時(shi)間一(yi)長，受到腐(fu)蝕性氣體的(de)(de)腐(fu)蝕，絕(jue)緣(yuan)(yuan)性能逐漸降(jiang)低，慢慢老化變(bian)硬，發脆或脫落，這時(shi)就不起絕(jue)緣(yuan)(yuan)作用(yong)了(le)。家用(yong)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)外(wai)表的(de)(de)絕(jue)緣(yuan)(yuan)層多用(yong)塑料和橡膠制成，使(shi)用(yong)時(shi)間長了(le)就會(hui)老化，失去(qu)絕(jue)緣(yuan)(yuan)作用(yong)。電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)失去(qu)絕(jue)緣(yuan)(yuan)的(de)(de)性能是很危險(xian)的(de)(de)，如(ru)果兩根電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)碰在一(yi)起或火線(xian)(xian)(xian)碰到與大地相(xiang)接的(de)(de)東西，就會(hui)發生跑電(dian)(dian)(dian)(dian)現象，使(shi)局(ju)部(bu)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)溫度升高，產生火花。如(ru)果電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)附近有易燃物就容易引起著火，造成火災(zai)。

2019年6月6日，工信部向中國電信、中國移動、中國聯通、中國廣電發放4張5G商用牌照。從此一舉打開了我國5G商用進程的大門。花線廠家網速更快只是(shi)5G時代的一個小變化，除此之外，5G將為(wei)我們的生活(huo)更多(duo)變化，它會改變我們的生活(huo)方式(shi)，為(wei)我們開啟新世界的大門。

云南專業生產花線電(dian)(dian)纜(lan)(lan)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)類型有(you)以(yi)下幾(ji)個方(fang)面：開路故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)，這(zhe)類故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)通(tong)常是指電(dian)(dian)纜(lan)(lan)與(yu)電(dian)(dian)纜(lan)(lan)間(jian)或電(dian)(dian)纜(lan)(lan)對(dui)地(di)的(de)(de)電(dian)(dian)阻(zu)(zu)(zu)值在(zai)規定值范圍內，但實際(ji)工(gong)作電(dian)(dian)壓(ya)(ya)無法(fa)向終(zhong)端(duan)傳輸或雖然(ran)(ran)也有(you)部分電(dian)(dian)壓(ya)(ya)傳輸到(dao)終(zhong)端(duan)，但幾(ji)乎沒有(you)負載能力，這(zhe)些都屬(shu)于開路故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)，在(zai)實際(ji)生產中，我們見(jian)到(dao)的(de)(de)斷線故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)屬(shu)于一種特殊的(de)(de)開路故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)。低(di)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)，當電(dian)(dian)纜(lan)(lan)與(yu)電(dian)(dian)纜(lan)(lan)間(jian)的(de)(de)絕(jue)緣(yuan)(yuan)有(you)損壞現(xian)象(xiang)或電(dian)(dian)纜(lan)(lan)對(dui)地(di)的(de)(de)絕(jue)緣(yuan)(yuan)有(you)損壞現(xian)象(xiang)時(shi)，電(dian)(dian)纜(lan)(lan)絕(jue)緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)(zu)必然(ran)(ran)會減小，在(zai)電(dian)(dian)纜(lan)(lan)絕(jue)緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)(zu)比十倍電(dian)(dian)纜(lan)(lan)特性(xing)(xing)(xing)(xing)阻(zu)(zu)(zu)抗還要(yao)小的(de)(de)情況下，我們稱這(zhe)種故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)為低(di)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)。在(zai)測(ce)量(liang)低(di)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)時(shi)，可(ke)用低(di)壓(ya)(ya)脈(mo)沖反(fan)射(she)法(fa)。高(gao)(gao)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)，當電(dian)(dian)纜(lan)(lan)與(yu)電(dian)(dian)纜(lan)(lan)間(jian)或電(dian)(dian)纜(lan)(lan)對(dui)地(di)的(de)(de)絕(jue)緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)(zu)比正常值低(di)很(hen)多，但比十倍電(dian)(dian)纜(lan)(lan)特性(xing)(xing)(xing)(xing)阻(zu)(zu)(zu)抗大時(shi)，我們把(ba)這(zhe)種電(dian)(dian)纜(lan)(lan)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)稱作高(gao)(gao)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)。對(dui)高(gao)(gao)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)的(de)(de)測(ce)量(liang)，不能使(shi)用低(di)壓(ya)(ya)脈(mo)沖反(fan)射(she)法(fa)，按照高(gao)(gao)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)具體性(xing)(xing)(xing)(xing)質(zhi)的(de)(de)不同，又可(ke)把(ba)高(gao)(gao)阻(zu)(zu)(zu)故(gu)(gu)(gu)(gu)(gu)(gu)障(zhang)(zhang)的(de)(de)性(xing)(xing)(xing)(xing)質(zhi)分為泄(xie)漏性(xing)(xing)(xing)(xing)與(yu)閃(shan)絡性(xing)(xing)(xing)(xing)兩種。

目前，南方花線電網(wang)正加快推進特(te)(te)高壓(ya)(ya)等新型基礎設(she)施(shi)項(xiang)目(mu)建(jian)設(she)。在南方電網(wang)重點特(te)(te)高壓(ya)(ya)工(gong)程(cheng)——昆(kun)柳龍直流(liu)輸電工(gong)程(cheng)建(jian)設(she)方面，南網(wang)科研院科研工(gong)作者已連續攻(gong)克了特(te)(te)高電壓(ya)(ya)、特(te)(te)大(da)電流(liu)下的絕緣特(te)(te)性(xing)、電磁環境(jing)、設(she)備研制、試驗技術等世界級難題。有力推動了這個(ge)世界首個(ge)特(te)(te)高壓(ya)(ya)多(duo)端混合直流(liu)工(gong)程(cheng)、國家特(te)(te)高壓(ya)(ya)多(duo)端直流(liu)示(shi)范工(gong)程(cheng)的建(jian)設(she)進度(du)。