文章來源(yuan)：國家電(dian)網公司 發布時間(jian)：2010-11-27
靈(ling)寶背靠背擴建工程于2009年(nian)11月25日3時15分一(yi)次成功(gong)達(da)到由華中(zhong)向西北輸(shu)送功(gong)率750MW、直(zhi)流電(dian)流4500A，標志著(zhu)世界上首個六英(ying)寸4500A晶閘(zha)管(guan)一(yi)次性完成額(e)定電(dian)流的考核，實現了額(e)定功(gong)率的輸(shu)送。
靈寶背(bei)靠(kao)背(bei)擴建工(gong)程各直流(liu)主(zhu)設(she)備(bei)均為(wei)(wei)(wei)自主(zhu)設(she)計制(zhi)造的(de)國(guo)(guo)(guo)產(chan)(chan)化設(she)備(bei)，換流(liu)閥為(wei)(wei)(wei)中國(guo)(guo)(guo)電(dian)(dian)科院、許繼集團、中國(guo)(guo)(guo)西電(dian)(dian)電(dian)(dian)氣股(gu)份(fen)(fen)有(you)(you)限公(gong)(gong)司生(sheng)(sheng)產(chan)(chan)，換流(liu)變(bian)(bian)為(wei)(wei)(wei)中國(guo)(guo)(guo)西電(dian)(dian)電(dian)(dian)氣股(gu)份(fen)(fen)有(you)(you)限公(gong)(gong)司、特變(bian)(bian)電(dian)(dian)工(gong)沈變(bian)(bian)公(gong)(gong)司生(sheng)(sheng)產(chan)(chan)，控制(zhi)保護裝置為(wei)(wei)(wei)北(bei)京四(si)方公(gong)(gong)司生(sheng)(sheng)產(chan)(chan)，平(ping)波電(dian)(dian)抗器為(wei)(wei)(wei)特變(bian)(bian)電(dian)(dian)工(gong)沈變(bian)(bian)公(gong)(gong)司生(sheng)(sheng)產(chan)(chan)。
靈寶背靠背擴(kuo)建工(gong)程(cheng)是目(mu)前世界上通(tong)流(liu)能力(li)最大的(de)直(zhi)流(liu)工(gong)程(cheng)，直(zhi)流(liu)電流(liu)實現運行4500A意味著各(ge)國產(chan)化直(zhi)流(liu)主(zhu)設(she)備通(tong)過了額定電流(liu)的(de)考(kao)驗，表明我國采用六英寸晶閘管(guan)的(de)直(zhi)流(liu)輸電技(ji)術已經走在世界前列，同時為今后±800kV特高壓直(zhi)流(liu)工(gong)程(cheng)采用六英寸4500A晶閘管(guan)奠定了堅實的(de)基礎。