文章來(lai)源：國家電網公司(si) 發布時(shi)間：2010-11-27
靈寶背(bei)靠背(bei)擴建工程(cheng)于2009年11月(yue)25日3時15分一次成功達到由(you)華中向(xiang)西(xi)北輸送功率750MW、直流電(dian)流4500A，標志(zhi)著世界上首(shou)個六英寸4500A晶閘管一次性(xing)完成額定電(dian)流的考核，實現了(le)額定功率的輸送。
靈寶背靠背擴建(jian)工(gong)程各直流(liu)主(zhu)設備(bei)均為自(zi)主(zhu)設計制造的國產(chan)(chan)化設備(bei)，換流(liu)閥為中國電(dian)(dian)(dian)(dian)科院、許繼(ji)集團、中國西(xi)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)氣(qi)股份有限公(gong)司生產(chan)(chan)，換流(liu)變(bian)(bian)(bian)為中國西(xi)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)氣(qi)股份有限公(gong)司、特(te)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)工(gong)沈(shen)(shen)變(bian)(bian)(bian)公(gong)司生產(chan)(chan)，控制保護裝(zhuang)置為北京(jing)四方公(gong)司生產(chan)(chan)，平波(bo)電(dian)(dian)(dian)(dian)抗器為特(te)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)工(gong)沈(shen)(shen)變(bian)(bian)(bian)公(gong)司生產(chan)(chan)。
靈寶背靠背擴(kuo)建工(gong)程是目前世界上(shang)通流能力(li)最大的(de)(de)(de)直(zhi)流工(gong)程，直(zhi)流電(dian)流實現運行(xing)4500A意(yi)味著各國(guo)產化直(zhi)流主(zhu)設(she)備通過了額定電(dian)流的(de)(de)(de)考驗，表明我國(guo)采用六(liu)英寸晶閘(zha)管的(de)(de)(de)直(zhi)流輸電(dian)技(ji)術已經走在世界前列，同時為今后±800kV特(te)高壓直(zhi)流工(gong)程采用六(liu)英寸4500A晶閘(zha)管奠定了堅實的(de)(de)(de)基礎(chu)。