文章來源：國家電網(wang)公司 發布時(shi)間：2010-12-18
12月16日3時20分，750千伏(fu)寶雞—乾縣(xian)輸變(bian)(bian)電(dian)工程正式投運，西(xi)北750千伏(fu)主(zhu)(zhu)網架與±500千伏(fu)西(xi)北—華中(zhong)（四川）直(zhi)流(liu)(liu)輸變(bian)(bian)電(dian)工程成功對接。750千伏(fu)主(zhu)(zhu)電(dian)網匯(hui)集西(xi)北地區豐(feng)富的水電(dian)、火電(dian)、風電(dian)資源，通過直(zhi)流(liu)(liu)輸電(dian)“打捆(kun)”外送的宏偉規劃正在逐步變(bian)(bian)成現實(shi)。
西北(bei)地(di)區是我國重(zhong)要的(de)能(neng)(neng)源(yuan)(yuan)(yuan)基地(di)，水(shui)力、煤(mei)炭(tan)、風能(neng)(neng)、太(tai)陽能(neng)(neng)等能(neng)(neng)源(yuan)(yuan)(yuan)資(zi)源(yuan)(yuan)(yuan)豐(feng)富，發(fa)展潛(qian)力巨大(da)。這(zhe)決(jue)定(ding)了西北(bei)電(dian)網(wang)(wang)(wang)(wang)作為(wei)重(zhong)要的(de)能(neng)(neng)源(yuan)(yuan)(yuan)輸(shu)出電(dian)網(wang)(wang)(wang)(wang)的(de)戰略地(di)位。近年(nian)來(lai)，西北(bei)電(dian)網(wang)(wang)(wang)(wang)有限公(gong)司加快(kuai)750千伏主網(wang)(wang)(wang)(wang)架和電(dian)力外(wai)送(song)通(tong)道建設，西北(bei)電(dian)網(wang)(wang)(wang)(wang)內“點(dian)對網(wang)(wang)(wang)(wang)”、“網(wang)(wang)(wang)(wang)對網(wang)(wang)(wang)(wang)”、“背(bei)靠背(bei)”、交直流(liu)混合運行等多(duo)種輸(shu)電(dian)方式(shi)共同(tong)發(fa)展，多(duo)通(tong)道、多(duo)方向、多(duo)落點(dian)、多(duo)種輸(shu)電(dian)方式(shi)、多(duo)種電(dian)源(yuan)(yuan)(yuan)類型的(de)電(dian)力大(da)規模外(wai)送(song)格局初步形(xing)成(cheng)。
750千(qian)(qian)伏(fu)(fu)寶(bao)(bao)乾(qian)輸變電(dian)(dian)(dian)工(gong)程(cheng)全長95千(qian)(qian)米(mi)，按同塔雙回路設計，起于750千(qian)(qian)伏(fu)(fu)乾(qian)縣變電(dian)(dian)(dian)站(zhan)，止(zhi)于750千(qian)(qian)伏(fu)(fu)寶(bao)(bao)雞(ji)變電(dian)(dian)(dian)站(zhan)。其(qi)中，750千(qian)(qian)伏(fu)(fu)寶(bao)(bao)雞(ji)變電(dian)(dian)(dian)站(zhan)與(yu)(yu)西北—華中直(zhi)流輸變電(dian)(dian)(dian)工(gong)程(cheng)的±500千(qian)(qian)伏(fu)(fu)寶(bao)(bao)雞(ji)換流站(zhan)同址合建，是世界上首(shou)座750千(qian)(qian)伏(fu)(fu)交流變與(yu)(yu)±500千(qian)(qian)伏(fu)(fu)直(zhi)流變合建的變電(dian)(dian)(dian)站(zhan)。
750千(qian)伏(fu)(fu)寶乾輸變電(dian)(dian)(dian)工程的(de)投(tou)運，標志著西北(bei)(bei)電(dian)(dian)(dian)網水電(dian)(dian)(dian)、火電(dian)(dian)(dian)、風電(dian)(dian)(dian)“打(da)捆”外(wai)送(song)戰略邁出了堅實一步。西北(bei)(bei)地區(qu)豐富的(de)電(dian)(dian)(dian)力(li)資源，將(jiang)通過750千(qian)伏(fu)(fu)主(zhu)網匯集(ji)后，輸送(song)至750千(qian)伏(fu)(fu)寶雞變電(dian)(dian)(dian)站，再通過±500千(qian)伏(fu)(fu)西北(bei)(bei)—華中直流工程向華中電(dian)(dian)(dian)網送(song)電(dian)(dian)(dian)。
寶(bao)乾輸變電(dian)(dian)工(gong)(gong)程(cheng)的投(tou)運，還解決了(le)陜(shan)西彬(bin)長電(dian)(dian)廠送(song)(song)出受(shou)限、寶(bao)雞地(di)區330千(qian)伏(fu)電(dian)(dian)網負載(zai)過重的問題，使陜(shan)西電(dian)(dian)力外(wai)送(song)(song)步伐(fa)大(da)大(da)加快(kuai)。該工(gong)(gong)程(cheng)是(shi)(shi)陜(shan)西電(dian)(dian)網從330千(qian)伏(fu)向750千(qian)伏(fu)升級的重要工(gong)(gong)程(cheng)，也是(shi)(shi)陜(shan)西境內繼750千(qian)伏(fu)彬(bin)乾線后(hou)，投(tou)運的第二項750千(qian)伏(fu)工(gong)(gong)程(cheng)。
西(xi)(xi)北(bei)(bei)電(dian)網(wang)(wang)具有(you)大規模(mo)外送的(de)能力(li)，預計2010年，西(xi)(xi)北(bei)(bei)電(dian)網(wang)(wang)可外送電(dian)量(liang)1000億(yi)千瓦時以(yi)上。據悉，明年西(xi)(xi)北(bei)(bei)—華中直流聯網(wang)(wang)工程(cheng)雙極投運后，西(xi)(xi)北(bei)(bei)電(dian)網(wang)(wang)、華中電(dian)網(wang)(wang)交(jiao)換功率可達到(dao)411萬千瓦，交(jiao)易(yi)電(dian)量(liang)將實現跨越式增長，預計年交(jiao)易(yi)量(liang)達到(dao)150億(yi)千瓦時以(yi)上，超過兩個區域電(dian)網(wang)(wang)聯網(wang)(wang)以(yi)來電(dian)能交(jiao)易(yi)的(de)總量(liang)。