文章(zhang)來源：國家電網(wang)公(gong)司 發布時間：2010-12-18
12月16日(ri)3時20分(fen)，750千伏(fu)寶雞—乾縣輸(shu)變電(dian)工程正式投運，西北(bei)750千伏(fu)主(zhu)網(wang)架與±500千伏(fu)西北(bei)—華中（四川）直(zhi)流輸(shu)變電(dian)工程成功(gong)對接。750千伏(fu)主(zhu)電(dian)網(wang)匯集西北(bei)地區豐富(fu)的水電(dian)、火電(dian)、風電(dian)資源(yuan)，通過直(zhi)流輸(shu)電(dian)“打捆”外送的宏偉(wei)規劃(hua)正在(zai)逐步變成現(xian)實。
西北(bei)地(di)區是我(wo)國重要的(de)(de)能源基(ji)地(di)，水(shui)力(li)、煤(mei)炭、風能、太陽(yang)能等能源資源豐富(fu)，發展潛力(li)巨大。這決定了西北(bei)電(dian)網作為(wei)重要的(de)(de)能源輸(shu)出電(dian)網的(de)(de)戰略地(di)位(wei)。近(jin)年來，西北(bei)電(dian)網有限公司加快750千伏主網架和(he)電(dian)力(li)外送通(tong)道(dao)建(jian)設，西北(bei)電(dian)網內(nei)“點(dian)對網”、“網對網”、“背(bei)靠背(bei)”、交直(zhi)流(liu)混合(he)運行等多種(zhong)(zhong)(zhong)輸(shu)電(dian)方(fang)式(shi)共同發展，多通(tong)道(dao)、多方(fang)向(xiang)、多落點(dian)、多種(zhong)(zhong)(zhong)輸(shu)電(dian)方(fang)式(shi)、多種(zhong)(zhong)(zhong)電(dian)源類型的(de)(de)電(dian)力(li)大規模外送格(ge)局初步形成。
750千(qian)(qian)伏(fu)(fu)寶乾輸(shu)變(bian)(bian)(bian)(bian)(bian)電(dian)工(gong)程全長95千(qian)(qian)米，按同(tong)塔雙回路設計，起于750千(qian)(qian)伏(fu)(fu)乾縣(xian)變(bian)(bian)(bian)(bian)(bian)電(dian)站(zhan)(zhan)，止于750千(qian)(qian)伏(fu)(fu)寶雞變(bian)(bian)(bian)(bian)(bian)電(dian)站(zhan)(zhan)。其中，750千(qian)(qian)伏(fu)(fu)寶雞變(bian)(bian)(bian)(bian)(bian)電(dian)站(zhan)(zhan)與(yu)西北—華(hua)中直(zhi)(zhi)流(liu)(liu)輸(shu)變(bian)(bian)(bian)(bian)(bian)電(dian)工(gong)程的(de)±500千(qian)(qian)伏(fu)(fu)寶雞換流(liu)(liu)站(zhan)(zhan)同(tong)址合(he)建，是世(shi)界上(shang)首座750千(qian)(qian)伏(fu)(fu)交(jiao)流(liu)(liu)變(bian)(bian)(bian)(bian)(bian)與(yu)±500千(qian)(qian)伏(fu)(fu)直(zhi)(zhi)流(liu)(liu)變(bian)(bian)(bian)(bian)(bian)合(he)建的(de)變(bian)(bian)(bian)(bian)(bian)電(dian)站(zhan)(zhan)。
750千(qian)伏(fu)(fu)寶(bao)(bao)乾輸變(bian)電(dian)(dian)工(gong)程的(de)投運，標志著西北(bei)電(dian)(dian)網水電(dian)(dian)、火電(dian)(dian)、風電(dian)(dian)“打捆”外送(song)(song)戰(zhan)略邁出了堅實一步。西北(bei)地(di)區豐富的(de)電(dian)(dian)力資源，將(jiang)通過(guo)750千(qian)伏(fu)(fu)主網匯集后，輸送(song)(song)至750千(qian)伏(fu)(fu)寶(bao)(bao)雞變(bian)電(dian)(dian)站，再通過(guo)±500千(qian)伏(fu)(fu)西北(bei)—華(hua)中直(zhi)流工(gong)程向華(hua)中電(dian)(dian)網送(song)(song)電(dian)(dian)。
寶乾(qian)輸變(bian)電工(gong)程(cheng)的(de)(de)投(tou)運，還解決了陜(shan)(shan)西(xi)彬(bin)長電廠送出受(shou)限、寶雞地區330千(qian)(qian)伏(fu)(fu)電網負載(zai)過(guo)重的(de)(de)問題，使(shi)陜(shan)(shan)西(xi)電力(li)外送步(bu)伐(fa)大(da)(da)大(da)(da)加快。該工(gong)程(cheng)是陜(shan)(shan)西(xi)電網從(cong)330千(qian)(qian)伏(fu)(fu)向750千(qian)(qian)伏(fu)(fu)升(sheng)級的(de)(de)重要工(gong)程(cheng)，也是陜(shan)(shan)西(xi)境(jing)內繼750千(qian)(qian)伏(fu)(fu)彬(bin)乾(qian)線后，投(tou)運的(de)(de)第二項750千(qian)(qian)伏(fu)(fu)工(gong)程(cheng)。
西(xi)北電(dian)網(wang)(wang)具有大規模外送的能(neng)力，預(yu)計(ji)2010年(nian)，西(xi)北電(dian)網(wang)(wang)可(ke)(ke)外送電(dian)量(liang)1000億千瓦時以上(shang)。據悉，明年(nian)西(xi)北—華(hua)中(zhong)直流(liu)聯(lian)網(wang)(wang)工程雙極投運(yun)后，西(xi)北電(dian)網(wang)(wang)、華(hua)中(zhong)電(dian)網(wang)(wang)交(jiao)換(huan)功率可(ke)(ke)達到(dao)411萬(wan)千瓦，交(jiao)易(yi)電(dian)量(liang)將實現跨越式增長，預(yu)計(ji)年(nian)交(jiao)易(yi)量(liang)達到(dao)150億千瓦時以上(shang)，超過兩個區域(yu)電(dian)網(wang)(wang)聯(lian)網(wang)(wang)以來電(dian)能(neng)交(jiao)易(yi)的總量(liang)。