文(wen)章來源(yuan)：國家電網公(gong)司 發布時間：2010-12-18
12月16日(ri)3時(shi)20分(fen)，750千伏(fu)寶雞—乾縣輸(shu)變(bian)(bian)電工(gong)(gong)程正式投運，西北(bei)750千伏(fu)主(zhu)網(wang)架與±500千伏(fu)西北(bei)—華(hua)中（四川）直流輸(shu)變(bian)(bian)電工(gong)(gong)程成(cheng)(cheng)功對接。750千伏(fu)主(zhu)電網(wang)匯集西北(bei)地區豐(feng)富(fu)的水電、火電、風電資源，通過直流輸(shu)電“打捆”外(wai)送的宏偉規劃(hua)正在逐步變(bian)(bian)成(cheng)(cheng)現實。
西北(bei)地(di)區是我國重(zhong)要的能(neng)(neng)源(yuan)基(ji)地(di)，水力(li)(li)、煤炭、風(feng)能(neng)(neng)、太(tai)陽能(neng)(neng)等能(neng)(neng)源(yuan)資源(yuan)豐富，發展潛力(li)(li)巨大。這(zhe)決(jue)定了西北(bei)電(dian)(dian)(dian)網作為重(zhong)要的能(neng)(neng)源(yuan)輸出(chu)電(dian)(dian)(dian)網的戰略地(di)位。近年來(lai)，西北(bei)電(dian)(dian)(dian)網有限公司加快750千伏(fu)主網架和(he)電(dian)(dian)(dian)力(li)(li)外送(song)通道建(jian)設，西北(bei)電(dian)(dian)(dian)網內“點對網”、“網對網”、“背(bei)靠背(bei)”、交直流混合運行等多(duo)種輸電(dian)(dian)(dian)方式(shi)共同發展，多(duo)通道、多(duo)方向、多(duo)落點、多(duo)種輸電(dian)(dian)(dian)方式(shi)、多(duo)種電(dian)(dian)(dian)源(yuan)類型的電(dian)(dian)(dian)力(li)(li)大規模外送(song)格局初步形成。
750千伏寶(bao)乾(qian)輸變(bian)(bian)電(dian)(dian)(dian)工程(cheng)全長(chang)95千米(mi)，按同塔(ta)雙回路(lu)設計，起于(yu)750千伏乾(qian)縣變(bian)(bian)電(dian)(dian)(dian)站(zhan)，止于(yu)750千伏寶(bao)雞(ji)變(bian)(bian)電(dian)(dian)(dian)站(zhan)。其中，750千伏寶(bao)雞(ji)變(bian)(bian)電(dian)(dian)(dian)站(zhan)與西北—華(hua)中直流輸變(bian)(bian)電(dian)(dian)(dian)工程(cheng)的(de)±500千伏寶(bao)雞(ji)換(huan)流站(zhan)同址合建，是(shi)世界上首座750千伏交流變(bian)(bian)與±500千伏直流變(bian)(bian)合建的(de)變(bian)(bian)電(dian)(dian)(dian)站(zhan)。
750千(qian)伏(fu)寶(bao)(bao)乾輸(shu)變電工程的(de)投運，標志著西(xi)北電網水電、火電、風電“打捆”外送(song)戰略邁出了堅實一步。西(xi)北地(di)區(qu)豐富的(de)電力(li)資源，將通過(guo)750千(qian)伏(fu)主網匯集后，輸(shu)送(song)至750千(qian)伏(fu)寶(bao)(bao)雞變電站，再通過(guo)±500千(qian)伏(fu)西(xi)北—華中直流工程向華中電網送(song)電。
寶(bao)乾(qian)輸變電工(gong)程的(de)投運，還解決了陜(shan)(shan)西(xi)彬(bin)長電廠送出受(shou)限、寶(bao)雞地(di)區330千(qian)伏(fu)(fu)電網負(fu)載過(guo)重的(de)問題，使(shi)陜(shan)(shan)西(xi)電力(li)外送步伐大大加快。該工(gong)程是陜(shan)(shan)西(xi)電網從(cong)330千(qian)伏(fu)(fu)向750千(qian)伏(fu)(fu)升級的(de)重要工(gong)程，也是陜(shan)(shan)西(xi)境(jing)內繼750千(qian)伏(fu)(fu)彬(bin)乾(qian)線(xian)后(hou)，投運的(de)第二項750千(qian)伏(fu)(fu)工(gong)程。
西(xi)(xi)北電(dian)(dian)網(wang)具(ju)有大(da)規(gui)模外送的能力，預計2010年(nian)(nian)，西(xi)(xi)北電(dian)(dian)網(wang)可(ke)(ke)外送電(dian)(dian)量(liang)1000億千(qian)瓦時(shi)以(yi)上(shang)。據悉，明年(nian)(nian)西(xi)(xi)北—華中直(zhi)流(liu)聯網(wang)工程(cheng)雙(shuang)極投運后，西(xi)(xi)北電(dian)(dian)網(wang)、華中電(dian)(dian)網(wang)交(jiao)換(huan)功率可(ke)(ke)達(da)到(dao)(dao)411萬(wan)千(qian)瓦，交(jiao)易電(dian)(dian)量(liang)將實現(xian)跨越式增長，預計年(nian)(nian)交(jiao)易量(liang)達(da)到(dao)(dao)150億千(qian)瓦時(shi)以(yi)上(shang)，超過兩個(ge)區域電(dian)(dian)網(wang)聯網(wang)以(yi)來電(dian)(dian)能交(jiao)易的總量(liang)。