文章來源：國家電(dian)網公司 發(fa)布(bu)時間：2009-12-22
12月16日(ri)，國家電網(wang)公司科技(ji)防冰(bing)減(jian)災(zai)項(xiang)目500千(qian)(qian)伏輸(shu)電線路移動(dong)直(zhi)流融冰(bing)裝置，在湖(hu)北500千(qian)(qian)伏咸(xian)寧(ning)變電站完成(cheng)融冰(bing)試(shi)驗(yan)。
本次(ci)試(shi)驗(yan)(yan)是繼(ji)12月7日在(zai)(zai)湖南成功(gong)進行(xing)第一(yi)套(tao)移動融(rong)(rong)(rong)冰裝置試(shi)驗(yan)(yan)后，國家電網公(gong)司(si)科(ke)技防冰減災工作(zuo)取得的(de)又一(yi)成果。試(shi)驗(yan)(yan)在(zai)(zai)湖北咸寧至江西夢山(shan)500千伏線(xian)(xian)路(lu)上進行(xing)，導(dao)線(xian)(xian)規格為LGJ—4×400，試(shi)驗(yan)(yan)最(zui)大(da)輸出融(rong)(rong)(rong)冰電流4500安(an)，咸夢線(xian)(xian)最(zui)大(da)溫(wen)升(sheng)達到36攝氏度。試(shi)驗(yan)(yan)線(xian)(xian)路(lu)、金具、接頭和直流融(rong)(rong)(rong)冰裝置各設(she)備運行(xing)正常，各項試(shi)驗(yan)(yan)數據(ju)均(jun)達到設(she)計要求，裝置性能(neng)滿足500千伏線(xian)(xian)路(lu)融(rong)(rong)(rong)冰需求。
該裝置采用(yong)分組(zu)變壓(ya)器(qi)和(he)不可控二極(ji)管(guan)整流(liu)(liu)橋級聯，通(tong)過串級調(diao)壓(ya)控制融冰電(dian)流(liu)(liu)大小，額(e)定(ding)(ding)(ding)交流(liu)(liu)輸(shu)入電(dian)壓(ya)35千伏，額(e)定(ding)(ding)(ding)輸(shu)出(chu)功(gong)率3萬千瓦，額(e)定(ding)(ding)(ding)直流(liu)(liu)輸(shu)出(chu)電(dian)壓(ya)8千伏，額(e)定(ding)(ding)(ding)輸(shu)出(chu)直流(liu)(liu)4000安，能滿(man)足50千米500千伏線路(lu)融冰要求。