文章來源：國家電網公司(si) 發布時間：2010-11-27
靈寶背靠背擴建工程于(yu)2009年11月25日3時(shi)15分一(yi)次成功(gong)達到由華中(zhong)向西北輸送功(gong)率750MW、直流電流4500A，標志著世界(jie)上首個六(liu)英寸4500A晶閘管(guan)一(yi)次性完成額定(ding)電流的考核(he)，實現了額定(ding)功(gong)率的輸送。
靈寶背(bei)靠背(bei)擴(kuo)建工程各直(zhi)流(liu)主(zhu)設備均為自主(zhu)設計制(zhi)造的國產化設備，換流(liu)閥(fa)為中國電(dian)(dian)科院、許繼(ji)集團、中國西(xi)電(dian)(dian)電(dian)(dian)氣(qi)股(gu)份有限(xian)公(gong)(gong)司(si)生(sheng)產，換流(liu)變(bian)(bian)(bian)為中國西(xi)電(dian)(dian)電(dian)(dian)氣(qi)股(gu)份有限(xian)公(gong)(gong)司(si)、特(te)變(bian)(bian)(bian)電(dian)(dian)工沈變(bian)(bian)(bian)公(gong)(gong)司(si)生(sheng)產，控制(zhi)保護裝置為北(bei)京四方公(gong)(gong)司(si)生(sheng)產，平波(bo)電(dian)(dian)抗器為特(te)變(bian)(bian)(bian)電(dian)(dian)工沈變(bian)(bian)(bian)公(gong)(gong)司(si)生(sheng)產。
靈寶背(bei)靠背(bei)擴建工(gong)(gong)程(cheng)是(shi)目前世(shi)界(jie)上通(tong)流(liu)能(neng)力最大的(de)直(zhi)(zhi)流(liu)工(gong)(gong)程(cheng)，直(zhi)(zhi)流(liu)電流(liu)實現運(yun)行4500A意味著各國產化直(zhi)(zhi)流(liu)主設備通(tong)過了額定(ding)(ding)電流(liu)的(de)考驗，表(biao)明我國采用(yong)六(liu)英寸晶閘管的(de)直(zhi)(zhi)流(liu)輸電技術(shu)已經(jing)走在(zai)世(shi)界(jie)前列，同時為今后±800kV特高壓直(zhi)(zhi)流(liu)工(gong)(gong)程(cheng)采用(yong)六(liu)英寸4500A晶閘管奠(dian)定(ding)(ding)了堅(jian)實的(de)基礎。