文章來源：國(guo)家電網公司(si) 發(fa)布(bu)時(shi)間：2010-12-18
12月16日3時20分，750千(qian)伏寶雞(ji)—乾縣輸(shu)變(bian)(bian)電(dian)(dian)工程(cheng)正(zheng)式投運，西(xi)北(bei)750千(qian)伏主(zhu)(zhu)網架與±500千(qian)伏西(xi)北(bei)—華中（四川）直流輸(shu)變(bian)(bian)電(dian)(dian)工程(cheng)成(cheng)(cheng)功對接(jie)。750千(qian)伏主(zhu)(zhu)電(dian)(dian)網匯集西(xi)北(bei)地區豐富的水電(dian)(dian)、火電(dian)(dian)、風電(dian)(dian)資源，通過直流輸(shu)電(dian)(dian)“打(da)捆”外送的宏偉規劃正(zheng)在逐步變(bian)(bian)成(cheng)(cheng)現實。
西(xi)北(bei)地(di)(di)區是我國(guo)重要的能(neng)(neng)源(yuan)基(ji)地(di)(di)，水力(li)、煤炭、風能(neng)(neng)、太陽能(neng)(neng)等(deng)能(neng)(neng)源(yuan)資源(yuan)豐富，發(fa)展潛力(li)巨大。這決定了西(xi)北(bei)電網(wang)(wang)作為重要的能(neng)(neng)源(yuan)輸(shu)出電網(wang)(wang)的戰(zhan)略地(di)(di)位。近年(nian)來(lai)，西(xi)北(bei)電網(wang)(wang)有限公司加快750千伏主網(wang)(wang)架和電力(li)外送(song)通道建設，西(xi)北(bei)電網(wang)(wang)內(nei)“點對網(wang)(wang)”、“網(wang)(wang)對網(wang)(wang)”、“背靠背”、交直流混(hun)合運行等(deng)多(duo)種輸(shu)電方(fang)式共同(tong)發(fa)展，多(duo)通道、多(duo)方(fang)向、多(duo)落點、多(duo)種輸(shu)電方(fang)式、多(duo)種電源(yuan)類型的電力(li)大規(gui)模外送(song)格局初(chu)步(bu)形成。
750千(qian)伏(fu)(fu)寶乾輸(shu)變(bian)(bian)電(dian)(dian)工程(cheng)全長95千(qian)米(mi)，按同(tong)塔雙(shuang)回路設計，起于(yu)750千(qian)伏(fu)(fu)乾縣變(bian)(bian)電(dian)(dian)站(zhan)，止于(yu)750千(qian)伏(fu)(fu)寶雞(ji)變(bian)(bian)電(dian)(dian)站(zhan)。其中，750千(qian)伏(fu)(fu)寶雞(ji)變(bian)(bian)電(dian)(dian)站(zhan)與西北—華中直(zhi)流(liu)輸(shu)變(bian)(bian)電(dian)(dian)工程(cheng)的±500千(qian)伏(fu)(fu)寶雞(ji)換流(liu)站(zhan)同(tong)址(zhi)合(he)建(jian)(jian)，是世界(jie)上首(shou)座750千(qian)伏(fu)(fu)交流(liu)變(bian)(bian)與±500千(qian)伏(fu)(fu)直(zhi)流(liu)變(bian)(bian)合(he)建(jian)(jian)的變(bian)(bian)電(dian)(dian)站(zhan)。
750千(qian)(qian)伏寶乾輸(shu)變電(dian)工程的投運，標志(zhi)著西北(bei)電(dian)網(wang)水電(dian)、火電(dian)、風電(dian)“打捆”外(wai)送(song)戰略邁出了堅實一步。西北(bei)地區豐富的電(dian)力資源，將通(tong)(tong)過750千(qian)(qian)伏主網(wang)匯(hui)集后(hou)，輸(shu)送(song)至750千(qian)(qian)伏寶雞變電(dian)站(zhan)，再通(tong)(tong)過±500千(qian)(qian)伏西北(bei)—華中直流工程向華中電(dian)網(wang)送(song)電(dian)。
寶乾輸變電(dian)工程(cheng)(cheng)的(de)(de)(de)投運，還解決了陜西彬長電(dian)廠(chang)送(song)出受限、寶雞地區330千伏電(dian)網負載過重(zhong)的(de)(de)(de)問題，使陜西電(dian)力外送(song)步伐大(da)大(da)加快(kuai)。該(gai)工程(cheng)(cheng)是(shi)陜西電(dian)網從330千伏向750千伏升級(ji)的(de)(de)(de)重(zhong)要工程(cheng)(cheng)，也是(shi)陜西境內繼750千伏彬乾線后，投運的(de)(de)(de)第二項750千伏工程(cheng)(cheng)。
西北(bei)(bei)電(dian)網(wang)具有大規模外(wai)送的能力，預計2010年(nian)，西北(bei)(bei)電(dian)網(wang)可(ke)外(wai)送電(dian)量(liang)(liang)1000億千瓦時(shi)以(yi)上(shang)。據悉，明年(nian)西北(bei)(bei)—華(hua)(hua)中(zhong)(zhong)直流聯(lian)網(wang)工程雙極投運后，西北(bei)(bei)電(dian)網(wang)、華(hua)(hua)中(zhong)(zhong)電(dian)網(wang)交換功率可(ke)達到411萬(wan)千瓦，交易(yi)電(dian)量(liang)(liang)將實現跨越式增長，預計年(nian)交易(yi)量(liang)(liang)達到150億千瓦時(shi)以(yi)上(shang)，超過兩個區域電(dian)網(wang)聯(lian)網(wang)以(yi)來電(dian)能交易(yi)的總(zong)量(liang)(liang)。