文(wen)章(zhang)來源：國家電網(wang)公司 發布時間(jian)：2009-12-22
12月(yue)16日，國家電網公(gong)司科(ke)技防冰減災(zai)項目500千(qian)伏輸(shu)電線(xian)路移動直流融冰裝置，在湖北500千(qian)伏咸寧(ning)變電站完成融冰試(shi)驗。
本(ben)次試(shi)驗(yan)是繼12月7日在湖南(nan)成功進行第一套移動融(rong)(rong)冰(bing)裝(zhuang)置(zhi)試(shi)驗(yan)后，國家電網公(gong)司科(ke)技防冰(bing)減(jian)災工作取得的又一成果(guo)。試(shi)驗(yan)在湖北咸(xian)寧至江西(xi)夢(meng)山500千伏(fu)線(xian)(xian)路(lu)上進行，導線(xian)(xian)規(gui)格為LGJ—4×400，試(shi)驗(yan)最(zui)大輸(shu)出融(rong)(rong)冰(bing)電流4500安，咸(xian)夢(meng)線(xian)(xian)最(zui)大溫升達到36攝(she)氏度。試(shi)驗(yan)線(xian)(xian)路(lu)、金(jin)具(ju)、接頭和直流融(rong)(rong)冰(bing)裝(zhuang)置(zhi)各設(she)備運行正常，各項試(shi)驗(yan)數據(ju)均(jun)達到設(she)計要(yao)求，裝(zhuang)置(zhi)性(xing)能滿足500千伏(fu)線(xian)(xian)路(lu)融(rong)(rong)冰(bing)需(xu)求。
該裝(zhuang)置采用分組變壓(ya)(ya)器和不可控二極(ji)管整流(liu)(liu)橋(qiao)級聯，通(tong)過(guo)串級調壓(ya)(ya)控制融冰電(dian)流(liu)(liu)大(da)小，額定(ding)(ding)交流(liu)(liu)輸入電(dian)壓(ya)(ya)35千(qian)(qian)(qian)伏(fu)，額定(ding)(ding)輸出功(gong)率(lv)3萬千(qian)(qian)(qian)瓦，額定(ding)(ding)直(zhi)(zhi)流(liu)(liu)輸出電(dian)壓(ya)(ya)8千(qian)(qian)(qian)伏(fu)，額定(ding)(ding)輸出直(zhi)(zhi)流(liu)(liu)4000安(an)，能滿足50千(qian)(qian)(qian)米500千(qian)(qian)(qian)伏(fu)線路(lu)融冰要求。