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　　5月7日(ri)，西(xi)北(bei)—華中(zhong)（四(si)川）直流聯網(wang)工(gong)程(cheng)開工(gong)儀式在陜西(xi)寶雞、四(si)川德(de)陽同時舉行。該工(gong)程(cheng)的開工(gong)建(jian)設，標(biao)志著(zhu)國(guo)家電(dian)(dian)網(wang)公司在推進(jin)電(dian)(dian)網(wang)跨區(qu)聯網(wang)工(gong)程(cheng)中(zhong)又邁出了重要一步(bu)，對促進(jin)電(dian)(dian)力(li)資源更(geng)大范圍優(you)化配置、助(zhu)力(li)西(xi)部經(jing)濟(ji)發展具有重要意義。

　　西北—華中（四(si)川）直(zhi)流(liu)(liu)(liu)聯(lian)網工(gong)(gong)程(cheng)(cheng)(cheng)起點為陜西寶(bao)雞換(huan)流(liu)(liu)(liu)站(zhan)(zhan)，落點為四(si)川德陽換(huan)流(liu)(liu)(liu)站(zhan)(zhan)，將新建(jian)±500千(qian)伏(fu)換(huan)流(liu)(liu)(liu)站(zhan)(zhan)兩(liang)座，新建(jian)直(zhi)流(liu)(liu)(liu)線(xian)路一條，全長約574千(qian)米，途(tu)經(jing)四(si)川、甘肅、陜西三省。工(gong)(gong)程(cheng)(cheng)(cheng)直(zhi)流(liu)(liu)(liu)額定(ding)電壓±500千(qian)伏(fu)，輸送容量300萬千(qian)瓦。經(jing)過各(ge)方的共同努力，該(gai)工(gong)(gong)程(cheng)(cheng)(cheng)科研、設計(ji)、施(shi)工(gong)(gong)和(he)設備(bei)(bei)制造工(gong)(gong)作穩步(bu)推進。工(gong)(gong)程(cheng)(cheng)(cheng)核準以來(lai)，各(ge)項(xiang)工(gong)(gong)作全面(mian)加(jia)快(kuai)，目(mu)前(qian)已(yi)完成(cheng)了工(gong)(gong)程(cheng)(cheng)(cheng)成(cheng)套設計(ji)、換(huan)流(liu)(liu)(liu)站(zhan)(zhan)初步(bu)設計(ji)和(he)換(huan)流(liu)(liu)(liu)站(zhan)(zhan)設備(bei)(bei)主設備(bei)(bei)采購，輸電線(xian)路勘(kan)察設計(ji)工(gong)(gong)作正在進行，換(huan)流(liu)(liu)(liu)站(zhan)(zhan)“三通一平(ping)”等開(kai)工(gong)(gong)準備(bei)(bei)工(gong)(gong)作已(yi)基本完成(cheng)，具(ju)備(bei)(bei)正式開(kai)工(gong)(gong)條件。工(gong)(gong)程(cheng)(cheng)(cheng)計(ji)劃2010年建(jian)成(cheng)。

　　據了解，我國(guo)西(xi)北(bei)(bei)(bei)地區煤(mei)炭資(zi)源(yuan)豐(feng)(feng)富，在(zai)全(quan)國(guo)占有重(zhong)要地位。四(si)川省(sheng)水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)資(zi)源(yuan)豐(feng)(feng)富，經(jing)濟可(ke)開(kai)發(fa)容(rong)(rong)量約(yue)1億千瓦，占全(quan)國(guo)的25%左右。西(xi)北(bei)(bei)(bei)水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)調節庫容(rong)(rong)較大(da)，調節性(xing)能(neng)良好，水(shui)(shui)(shui)(shui)火(huo)電(dian)(dian)(dian)互(hu)補，電(dian)(dian)(dian)網(wang)(wang)調峰能(neng)力(li)充足。四(si)川電(dian)(dian)(dian)網(wang)(wang)水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)比重(zhong)大(da)，但多為日調節及徑(jing)流式電(dian)(dian)(dian)站(zhan)，調節性(xing)能(neng)差，豐(feng)(feng)、枯水(shui)(shui)(shui)(shui)期出力(li)懸(xuan)殊(shu)，豐(feng)(feng)水(shui)(shui)(shui)(shui)期棄水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)量較大(da)，而枯水(shui)(shui)(shui)(shui)期水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)可(ke)發(fa)電(dian)(dian)(dian)量少。工程建成(cheng)后(hou)，在(zai)枯水(shui)(shui)(shui)(shui)期，西(xi)北(bei)(bei)(bei)電(dian)(dian)(dian)網(wang)(wang)每年將(jiang)向華中電(dian)(dian)(dian)網(wang)(wang)輸(shu)送火(huo)電(dian)(dian)(dian)電(dian)(dian)(dian)量，可(ke)極大(da)地緩解四(si)川由于煤(mei)炭產(chan)量不足所造成(cheng)的缺電(dian)(dian)(dian)問題，并(bing)減(jian)輕西(xi)北(bei)(bei)(bei)地區鐵路運輸(shu)壓力(li)。在(zai)豐(feng)(feng)水(shui)(shui)(shui)(shui)期，西(xi)北(bei)(bei)(bei)電(dian)(dian)(dian)網(wang)(wang)每年將(jiang)接(jie)受四(si)川富余水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)電(dian)(dian)(dian)量。聯網(wang)(wang)后(hou)，兩大(da)電(dian)(dian)(dian)網(wang)(wang)系統可(ke)以互(hu)相獲(huo)得保證電(dian)(dian)(dian)量，減(jian)少備用容(rong)(rong)量150萬(wan)千瓦，并(bing)可(ke)在(zai)災(zai)害情況下，發(fa)揮大(da)電(dian)(dian)(dian)網(wang)(wang)作(zuo)用，實現(xian)互(hu)援(yuan)互(hu)濟，提(ti)高電(dian)(dian)(dian)網(wang)(wang)抗災(zai)能(neng)力(li)和可(ke)靠供電(dian)(dian)(dian)水(shui)(shui)(shui)(shui)平。

　　西北—華中聯網概況

　　2005年6月18日，國家(jia)電網(wang)公司330千(qian)伏(fu)靈(ling)(ling)寶(bao)背(bei)靠背(bei)直(zhi)流(liu)聯(lian)網(wang)工程投入試運(yun)(yun)行(xing)，西北(bei)電網(wang)和(he)華中電網(wang)成功聯(lian)網(wang)。靈(ling)(ling)寶(bao)背(bei)靠背(bei)直(zhi)流(liu)聯(lian)網(wang)工程是我國第一次(ci)自(zi)(zi)(zi)主設計、自(zi)(zi)(zi)主建設、自(zi)(zi)(zi)主設備制(zhi)造安裝、自(zi)(zi)(zi)主運(yun)(yun)行(xing)管理(li)的直(zhi)流(liu)聯(lian)網(wang)工程，換流(liu)容量36萬千(qian)瓦(wa)。目前，位(wei)于河南(nan)三門峽的330千(qian)伏(fu)靈(ling)(ling)寶(bao)換流(liu)站已安全穩定運(yun)(yun)行(xing)超過1000天，部分運(yun)(yun)行(xing)指標在世界范圍內(nei)的背(bei)靠背(bei)換流(liu)站中名列前茅。

　　西北—華中（四川）直流聯網工程(cheng)是西北電(dian)網與華中電(dian)網聯網的第二條(tiao)輸(shu)電(dian)線路(lu)，將實現(xian)能源資(zi)源更大(da)范圍的優化配(pei)置(zhi)，效益顯(xian)著(zhu)。