文章來(lai)源：國家電網公司 發布時間：2010-12-18
12月16日3時(shi)20分(fen)，750千伏(fu)(fu)寶雞—乾縣輸(shu)變(bian)電(dian)(dian)工程(cheng)正(zheng)式投(tou)運，西(xi)北(bei)750千伏(fu)(fu)主網(wang)架(jia)與±500千伏(fu)(fu)西(xi)北(bei)—華中（四(si)川）直流輸(shu)變(bian)電(dian)(dian)工程(cheng)成(cheng)功對接。750千伏(fu)(fu)主電(dian)(dian)網(wang)匯集(ji)西(xi)北(bei)地區豐富的水電(dian)(dian)、火電(dian)(dian)、風電(dian)(dian)資(zi)源(yuan)，通過直流輸(shu)電(dian)(dian)“打捆”外送的宏偉規劃正(zheng)在逐步(bu)變(bian)成(cheng)現(xian)實。
西(xi)北地(di)區是我(wo)國重要的能(neng)源基地(di)，水力(li)(li)、煤炭、風能(neng)、太(tai)陽能(neng)等能(neng)源資源豐(feng)富(fu)，發展(zhan)(zhan)潛力(li)(li)巨大。這決定了西(xi)北電(dian)網(wang)作為重要的能(neng)源輸出電(dian)網(wang)的戰略地(di)位。近年來，西(xi)北電(dian)網(wang)有限(xian)公(gong)司加(jia)快750千伏(fu)主(zhu)網(wang)架和電(dian)力(li)(li)外送通道建設，西(xi)北電(dian)網(wang)內“點對網(wang)”、“網(wang)對網(wang)”、“背(bei)靠背(bei)”、交直流混合運行(xing)等多(duo)種(zhong)輸電(dian)方式共同發展(zhan)(zhan)，多(duo)通道、多(duo)方向、多(duo)落點、多(duo)種(zhong)輸電(dian)方式、多(duo)種(zhong)電(dian)源類(lei)型的電(dian)力(li)(li)大規模外送格局(ju)初步形成。
750千(qian)(qian)伏(fu)寶(bao)(bao)乾輸(shu)變(bian)(bian)電(dian)工程(cheng)全長95千(qian)(qian)米(mi)，按(an)同塔(ta)雙回路設計，起于(yu)750千(qian)(qian)伏(fu)乾縣(xian)變(bian)(bian)電(dian)站，止(zhi)于(yu)750千(qian)(qian)伏(fu)寶(bao)(bao)雞變(bian)(bian)電(dian)站。其中(zhong)，750千(qian)(qian)伏(fu)寶(bao)(bao)雞變(bian)(bian)電(dian)站與西北—華中(zhong)直(zhi)流輸(shu)變(bian)(bian)電(dian)工程(cheng)的±500千(qian)(qian)伏(fu)寶(bao)(bao)雞換流站同址合建(jian)(jian)，是(shi)世界(jie)上首座750千(qian)(qian)伏(fu)交流變(bian)(bian)與±500千(qian)(qian)伏(fu)直(zhi)流變(bian)(bian)合建(jian)(jian)的變(bian)(bian)電(dian)站。
750千(qian)(qian)伏(fu)寶乾(qian)輸(shu)變電(dian)工程(cheng)的投運，標志著西(xi)北電(dian)網(wang)水電(dian)、火電(dian)、風(feng)電(dian)“打捆”外送(song)(song)戰略邁(mai)出了堅(jian)實一(yi)步。西(xi)北地區豐富的電(dian)力(li)資源，將通過750千(qian)(qian)伏(fu)主網(wang)匯(hui)集后，輸(shu)送(song)(song)至750千(qian)(qian)伏(fu)寶雞(ji)變電(dian)站，再通過±500千(qian)(qian)伏(fu)西(xi)北—華中(zhong)直流工程(cheng)向華中(zhong)電(dian)網(wang)送(song)(song)電(dian)。
寶乾輸變電工(gong)程(cheng)的投運(yun)，還解決了(le)陜(shan)西(xi)(xi)彬(bin)長電廠送出受限、寶雞地(di)區(qu)330千伏(fu)(fu)電網負載過重(zhong)的問題，使陜(shan)西(xi)(xi)電力(li)外送步伐大(da)大(da)加快。該工(gong)程(cheng)是陜(shan)西(xi)(xi)電網從330千伏(fu)(fu)向750千伏(fu)(fu)升級的重(zhong)要(yao)工(gong)程(cheng)，也是陜(shan)西(xi)(xi)境內繼750千伏(fu)(fu)彬(bin)乾線(xian)后，投運(yun)的第二(er)項(xiang)750千伏(fu)(fu)工(gong)程(cheng)。
西(xi)北(bei)電網(wang)具有大(da)規模外(wai)送(song)(song)的能(neng)力，預計(ji)2010年，西(xi)北(bei)電網(wang)可(ke)外(wai)送(song)(song)電量(liang)1000億千瓦(wa)時以(yi)上。據悉，明年西(xi)北(bei)—華中直(zhi)流聯網(wang)工(gong)程雙極投運后，西(xi)北(bei)電網(wang)、華中電網(wang)交(jiao)換功率(lv)可(ke)達到411萬千瓦(wa)，交(jiao)易電量(liang)將(jiang)實(shi)現跨越式增長，預計(ji)年交(jiao)易量(liang)達到150億千瓦(wa)時以(yi)上，超過兩個(ge)區域電網(wang)聯網(wang)以(yi)來電能(neng)交(jiao)易的總量(liang)。