文章來源：國家電網(wang)公司(si) 發(fa)布時間：2010-11-27
靈寶背靠背擴建(jian)工程(cheng)于2009年11月25日3時15分(fen)一(yi)(yi)次(ci)成(cheng)功達到(dao)由華(hua)中向西北輸送(song)功率(lv)750MW、直流電流4500A，標志著世界上首個六(liu)英寸(cun)4500A晶閘管(guan)一(yi)(yi)次(ci)性完(wan)成(cheng)額定電流的(de)考(kao)核(he)，實現(xian)了額定功率(lv)的(de)輸送(song)。
靈寶背(bei)靠背(bei)擴建(jian)工程各直流主(zhu)設備均為(wei)(wei)自主(zhu)設計(ji)制造的(de)國產(chan)化(hua)設備，換流閥為(wei)(wei)中(zhong)國電(dian)(dian)科院、許繼集團、中(zhong)國西電(dian)(dian)電(dian)(dian)氣股份(fen)有(you)(you)限(xian)(xian)公(gong)(gong)司生(sheng)(sheng)產(chan)，換流變(bian)為(wei)(wei)中(zhong)國西電(dian)(dian)電(dian)(dian)氣股份(fen)有(you)(you)限(xian)(xian)公(gong)(gong)司、特變(bian)電(dian)(dian)工沈變(bian)公(gong)(gong)司生(sheng)(sheng)產(chan)，控制保護裝置為(wei)(wei)北(bei)京四(si)方公(gong)(gong)司生(sheng)(sheng)產(chan)，平(ping)波電(dian)(dian)抗器為(wei)(wei)特變(bian)電(dian)(dian)工沈變(bian)公(gong)(gong)司生(sheng)(sheng)產(chan)。
靈(ling)寶背靠背擴建(jian)工程是(shi)目(mu)前(qian)世(shi)界(jie)上通流能力最大的直(zhi)流工程，直(zhi)流電流實現運行(xing)4500A意味著(zhu)各國產化直(zhi)流主設(she)備通過了額定電流的考驗，表明我國采用六(liu)英(ying)寸晶(jing)閘管(guan)(guan)的直(zhi)流輸(shu)電技術已經走在世(shi)界(jie)前(qian)列，同時為今后±800kV特高壓直(zhi)流工程采用六(liu)英(ying)寸4500A晶(jing)閘管(guan)(guan)奠定了堅實的基礎。