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　　近日，由國(guo)家電(dian)網公司組織(zhi)開展的(de)1000平方毫米大(da)截面導線首次(ci)展放(fang)試驗取得(de)成功，標(biao)志著我國(guo)在大(da)截面導線的(de)研制(zhi)生產(chan)及(ji)施(shi)工方面躋身世界先(xian)進(jin)行(xing)列，對提高我國(guo)輸(shu)電(dian)線路施(shi)工技術水平、推動(dong)電(dian)網升級，促進(jin)電(dian)網節能降(jiang)耗和促進(jin)環境保護具有重要意義。

　　本(ben)次試驗(yan)在甘(gan)肅(su)750千(qian)伏(fu)永白線(xian)(xian)199#～212#區(qu)段進行，驗(yan)證了(le)施工(gong)工(gong)藝的合理性，檢(jian)驗(yan)了(le)1000平(ping)方(fang)毫(hao)米(mi)導(dao)線(xian)(xian)對(dui)張力放線(xian)(xian)機具(ju)配(pei)置的適應性，實踐施工(gong)方(fang)案的可(ke)操作性，探(tan)討了(le)35倍線(xian)(xian)徑張力輪(lun)和15倍線(xian)(xian)徑滑輪(lun)在工(gong)程中使用的可(ke)行性等內(nei)容(rong)，為最終(zhong)形成(cheng)1000平(ping)方(fang)毫(hao)米(mi)導(dao)線(xian)(xian)張力放線(xian)(xian)施工(gong)工(gong)藝導(dao)則(ze)、配(pei)套機具(ju)設(she)備配(pei)置方(fang)案、架線(xian)(xian)施工(gong)預算定額等成(cheng)果，推動(dong)工(gong)程實際應用奠定了(le)重(zhong)要(yao)基礎。

　　導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)是輸電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)(xian)路(lu)的(de)(de)主要(yao)元(yuan)件之(zhi)一。大截面導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)技(ji)術(shu)通過增大導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)截面面積(ji)、增加導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)分裂根數等(deng)(deng)措施(shi)(shi)，可提(ti)高主干(gan)輸電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)(xian)路(lu)單(dan)位走廊輸送(song)功率，有效降低線(xian)(xian)(xian)(xian)(xian)路(lu)損耗(hao)(hao)和(he)(he)(he)無線(xian)(xian)(xian)(xian)(xian)電(dian)(dian)(dian)干(gan)擾、可聽噪聲等(deng)(deng)，顯著(zhu)(zhu)降低工程(cheng)投資成本(ben)和(he)(he)(he)運行成本(ben)，是實現電(dian)(dian)(dian)網節能(neng)降耗(hao)(hao)和(he)(he)(he)促(cu)進環境保護的(de)(de)重要(yao)技(ji)術(shu)舉措，具(ju)有顯著(zhu)(zhu)的(de)(de)技(ji)術(shu)經濟效益和(he)(he)(he)廣(guang)闊(kuo)的(de)(de)應用(yong)(yong)前景(jing)。近年來，國(guo)家電(dian)(dian)(dian)網公(gong)司積(ji)極推(tui)(tui)行“資源節約(yue)型、環境友好型，新(xin)技(ji)術(shu)、新(xin)材料、新(xin)工藝”（“兩型三新(xin)”）輸電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)(xian)路(lu)建(jian)(jian)設(she)，在多項(xiang)輸變電(dian)(dian)(dian)工程(cheng)中(zhong)開(kai)展大截面導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)技(ji)術(shu)研(yan)究(jiu)和(he)(he)(he)應用(yong)(yong)推(tui)(tui)廣(guang)，取得(de)顯著(zhu)(zhu)效果。公(gong)司正(zheng)在建(jian)(jian)設(she)中(zhong)的(de)(de)我國(guo)第(di)一條(tiao)±660千(qian)伏直流輸電(dian)(dian)(dian)示范工程(cheng)將(jiang)全線(xian)(xian)(xian)(xian)(xian)采(cai)(cai)用(yong)(yong)1000平方毫米大截面導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)。按該(gai)工程(cheng)測算，采(cai)(cai)用(yong)(yong)4×1000mm2導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)比6×630mm2導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)節約(yue)線(xian)(xian)(xian)(xian)(xian)路(lu)本(ben)體投資約(yue)4000萬元(yuan)，工程(cheng)投運后每年可減少(shao)線(xian)(xian)(xian)(xian)(xian)路(lu)損耗(hao)(hao)約(yue)2700萬千(qian)瓦時(shi)。同時(shi)，積(ji)極推(tui)(tui)廣(guang)應用(yong)(yong)大截面導(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)技(ji)術(shu)，對(dui)于進一步提(ti)升(sheng)國(guo)內電(dian)(dian)(dian)力設(she)備企業產品研(yan)發和(he)(he)(he)制造能(neng)力，以及(ji)提(ti)升(sheng)建(jian)(jian)設(she)單(dan)位施(shi)(shi)工水平等(deng)(deng)都具(ju)有重要(yao)帶動作(zuo)用(yong)(yong)。