文章(zhang)來源：國家電網公司 發布時(shi)間(jian)：2010-12-31
12月26日，由我國自(zi)主(zhu)設(she)計、自(zi)主(zhu)建(jian)設(she)的(de)向家壩-上(shang)(shang)海±800千伏特(te)高壓(ya)(ya)直(zhi)(zhi)流(liu)輸(shu)電(dian)(dian)示范工(gong)(gong)(gong)程全(quan)線升(sheng)壓(ya)(ya)至直(zhi)(zhi)流(liu)800千伏，標(biao)(biao)志著(zhu)目(mu)前世(shi)(shi)界(jie)上(shang)(shang)輸(shu)送(song)容量最(zui)大、送(song)電(dian)(dian)距離最(zui)遠、技術(shu)(shu)水(shui)平最(zui)先進、電(dian)(dian)壓(ya)(ya)等(deng)級(ji)最(zui)高的(de)直(zhi)(zhi)流(liu)輸(shu)電(dian)(dian)工(gong)(gong)(gong)程全(quan)線帶(dai)電(dian)(dian)成功(gong)。該工(gong)(gong)(gong)程額定電(dian)(dian)壓(ya)(ya)±800千伏、額定電(dian)(dian)流(liu)4000安(an)培，輸(shu)送(song)功(gong)率可達700萬千瓦(wa)級(ji)，是引領(ling)世(shi)(shi)界(jie)直(zhi)(zhi)流(liu)輸(shu)電(dian)(dian)技術(shu)(shu)發展的(de)創新(xin)工(gong)(gong)(gong)程，在(zai)世(shi)(shi)界(jie)上(shang)(shang)率先實現(xian)特(te)高壓(ya)(ya)直(zhi)(zhi)流(liu)輸(shu)電(dian)(dian)的(de)電(dian)(dian)壓(ya)(ya)、電(dian)(dian)流(liu)雙提升(sheng)、雙突(tu)破，代表世(shi)(shi)界(jie)直(zhi)(zhi)流(liu)輸(shu)電(dian)(dian)技術(shu)(shu)的(de)最(zui)高水(shui)平，也標(biao)(biao)志著(zhu)國家電(dian)(dian)網全(quan)面進入特(te)高壓(ya)(ya)交(jiao)直(zhi)(zhi)流(liu)混合電(dian)(dian)網時期。
該工程西起四(si)川向家(jia)壩復龍換流站，東(dong)至上(shang)海奉(feng)賢(xian)換流站，全(quan)長約(yue)1907公(gong)里，途經8個省市(shi)(shi)，4次(ci)跨(kua)越(yue)長江(jiang)，對于實(shi)現(xian)西南水電能(neng)(neng)源(yuan)基(ji)地大(da)規(gui)模開發和(he)經濟高效送出，進一步促進我國清潔(jie)能(neng)(neng)源(yuan)快速發展，滿(man)足東(dong)部地區日益(yi)增長的負荷(he)發展需要，改善能(neng)(neng)源(yuan)結構，促進節(jie)能(neng)(neng)減排(pai)，具(ju)有重要意(yi)義(yi)和(he)深遠影響。通(tong)過該工程每(mei)年(nian)可向上(shang)海輸(shu)送四(si)川清潔(jie)水電350億(yi)千瓦時，相當于目(mu)前上(shang)海市(shi)(shi)全(quan)年(nian)用電量的三分之一，比在上(shang)海直(zhi)接建(jian)設火(huo)力發電廠，每(mei)年(nian)可節(jie)省原煤1600萬(wan)噸，減排(pai)二氧化碳(tan)超過2600萬(wan)噸，節(jie)能(neng)(neng)減排(pai)意(yi)義(yi)重大(da)。