文章來源：國家電網(wang)公(gong)司 發布時(shi)間：2010-11-27
靈寶(bao)背靠(kao)背擴建工程(cheng)于(yu)2009年(nian)11月25日(ri)3時15分一次成功達到由華(hua)中向西北(bei)輸送(song)功率750MW、直(zhi)流電流4500A，標志著(zhu)世(shi)界上(shang)首個六英寸4500A晶閘管一次性完成額定電流的考核，實現了額定功率的輸送(song)。
靈(ling)寶背靠背擴建工(gong)(gong)程各直流主設(she)備均為(wei)自(zi)主設(she)計(ji)制造的國(guo)產化設(she)備，換流閥為(wei)中(zhong)國(guo)電(dian)(dian)(dian)科(ke)院、許繼集團、中(zhong)國(guo)西(xi)電(dian)(dian)(dian)電(dian)(dian)(dian)氣股份有(you)限(xian)公(gong)司(si)生(sheng)產，換流變(bian)(bian)為(wei)中(zhong)國(guo)西(xi)電(dian)(dian)(dian)電(dian)(dian)(dian)氣股份有(you)限(xian)公(gong)司(si)、特變(bian)(bian)電(dian)(dian)(dian)工(gong)(gong)沈變(bian)(bian)公(gong)司(si)生(sheng)產，控(kong)制保(bao)護裝置為(wei)北京四方公(gong)司(si)生(sheng)產，平波電(dian)(dian)(dian)抗器(qi)為(wei)特變(bian)(bian)電(dian)(dian)(dian)工(gong)(gong)沈變(bian)(bian)公(gong)司(si)生(sheng)產。
靈寶背靠背擴(kuo)建工程是目前世界上通(tong)流(liu)(liu)能(neng)力最大的(de)直(zhi)流(liu)(liu)工程，直(zhi)流(liu)(liu)電(dian)流(liu)(liu)實(shi)現運行4500A意(yi)味著(zhu)各國產化直(zhi)流(liu)(liu)主(zhu)設備通(tong)過了額(e)定(ding)電(dian)流(liu)(liu)的(de)考驗，表明我(wo)國采(cai)用六(liu)英(ying)寸晶(jing)閘(zha)管(guan)的(de)直(zhi)流(liu)(liu)輸電(dian)技術已(yi)經走(zou)在(zai)世界前列，同時為今后(hou)±800kV特高壓(ya)直(zhi)流(liu)(liu)工程采(cai)用六(liu)英(ying)寸4500A晶(jing)閘(zha)管(guan)奠定(ding)了堅(jian)實(shi)的(de)基礎。