文章來源：國家(jia)電(dian)網公司(si) 發(fa)布時間：2010-03-10
為有效(xiao)緩解四川(chuan)枯水(shui)期(qi)電(dian)(dian)力(li)供應緊張(zhang)和豐(feng)水(shui)期(qi)棄水(shui)損失問題，支援四川(chuan)災區恢復重建，按照國家電(dian)(dian)網(wang)公(gong)司的(de)統一(yi)部署，國家電(dian)(dian)網(wang)直(zhi)流公(gong)司全力(li)加快西北－華中（四川(chuan)）直(zhi)流聯網(wang)工(gong)程建設步伐(fa)，力(li)爭2009年(nian)底(di)建成投運，較原(yuan)計劃工(gong)期(qi)提前四個月。
西(xi)北(bei)(bei)－華中（四(si)(si)川(chuan)(chuan)）直流(liu)聯網(wang)(wang)工程是國(guo)家(jia)跨(kua)區(qu)(qu)電(dian)(dian)(dian)網(wang)(wang)建(jian)(jian)設重(zhong)(zhong)點工程，也是我國(guo)首(shou)個(ge)實(shi)現100％國(guo)產化(hua)的±500千伏輸(shu)(shu)電(dian)(dian)(dian)工程，對于(yu)提(ti)高我國(guo)輸(shu)(shu)變(bian)電(dian)(dian)(dian)設備(bei)自主創新(xin)和(he)制造(zao)能力(li)具(ju)有(you)(you)重(zhong)(zhong)要意義(yi)。工程起(qi)點為陜西(xi)寶雞，落點為四(si)(si)川(chuan)(chuan)德陽(yang)，計劃新(xin)建(jian)(jian)±500千伏換流(liu)站兩座，直流(liu)線路一條，全長約574公里，途(tu)經(jing)(jing)四(si)(si)川(chuan)(chuan)、甘肅、陜西(xi)3省12個(ge)市縣(xian)，工程額定輸(shu)(shu)送(song)容量(liang)300萬千瓦，靜態投資(zi)約54億(yi)元。工程建(jian)(jian)成后，將為四(si)(si)川(chuan)(chuan)災后重(zhong)(zhong)建(jian)(jian)及(ji)經(jing)(jing)濟發展提(ti)供(gong)(gong)有(you)(you)力(li)支持。枯水期(qi)，西(xi)北(bei)(bei)電(dian)(dian)(dian)網(wang)(wang)向四(si)(si)川(chuan)(chuan)電(dian)(dian)(dian)網(wang)(wang)輸(shu)(shu)送(song)火電(dian)(dian)(dian)電(dian)(dian)(dian)量(liang)，可極(ji)大(da)地緩解四(si)(si)川(chuan)(chuan)由于(yu)煤炭產量(liang)不足造(zao)成的缺電(dian)(dian)(dian)問(wen)題，并減(jian)輕西(xi)北(bei)(bei)地區(qu)(qu)鐵路運輸(shu)(shu)壓力(li)；豐水期(qi)，將四(si)(si)川(chuan)(chuan)富余水電(dian)(dian)(dian)送(song)至西(xi)北(bei)(bei)地區(qu)(qu)，推(tui)動四(si)(si)川(chuan)(chuan)資(zi)源優勢(shi)轉化(hua)為經(jing)(jing)濟優勢(shi)。工程在實(shi)現水電(dian)(dian)(dian)跨(kua)流(liu)域補償(chang)調(diao)節、水火電(dian)(dian)(dian)互補調(diao)節、減(jian)少電(dian)(dian)(dian)網(wang)(wang)備(bei)用容量(liang)，以及(ji)有(you)(you)效提(ti)高電(dian)(dian)(dian)網(wang)(wang)抵御自然災害(hai)能力(li)和(he)可靠供(gong)(gong)電(dian)(dian)(dian)水平等(deng)方(fang)面，具(ju)有(you)(you)顯(xian)著的經(jing)(jing)濟效益(yi)和(he)社會效益(yi)。
國家電網直流公司積(ji)極組織各參建方(fang)力量(liang)，克服施(shi)工(gong)條件艱(jian)苦、余(yu)震不斷，以及因地(di)震造成的建筑材(cai)料(liao)供應緊張、價格(ge)上漲等(deng)不利(li)因素，在確保安全(quan)、質量(liang)前提下，強化施(shi)工(gong)管理，加(jia)強設備制造協調，優化工(gong)期計劃，全(quan)面加(jia)快工(gong)程建設進(jin)度。
截至3月7日，已完成換(huan)流站主控樓建筑封頂，交流場、交流濾波器場構架吊(diao)裝等重要工(gong)程(cheng)節點，工(gong)程(cheng)建設進度總體順利。