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8月29日，南方電(dian)網首(shou)個背(bei)(bei)(bei)靠(kao)背(bei)(bei)(bei)直(zhi)流(liu)(liu)工程(cheng)——云南電(dian)網與(yu)(yu)南網主網魯(lu)西(xi)背(bei)(bei)(bei)靠(kao)背(bei)(bei)(bei)直(zhi)流(liu)(liu)異步聯網工程(cheng)（簡稱(cheng)“魯(lu)西(xi)背(bei)(bei)(bei)靠(kao)背(bei)(bei)(bei)直(zhi)流(liu)(liu)工程(cheng)”）柔(rou)性直(zhi)流(liu)(liu)單元正式投運(yun)，標(biao)志著世界首(shou)個采(cai)用(yong)大容(rong)量柔(rou)性直(zhi)流(liu)(liu)與(yu)(yu)常(chang)規直(zhi)流(liu)(liu)組合模(mo)式的背(bei)(bei)(bei)靠(kao)背(bei)(bei)(bei)直(zhi)流(liu)(liu)工程(cheng)全(quan)面建成投運(yun)。

魯西背(bei)靠(kao)背(bei)直(zhi)(zhi)流(liu)(liu)工程一期(qi)建設(she)1×100萬(wan)千(qian)(qian)(qian)瓦(wa)(wa)常規直(zhi)(zhi)流(liu)(liu)單(dan)(dan)元(yuan)加(jia)1×100萬(wan)千(qian)(qian)(qian)瓦(wa)(wa)柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)單(dan)(dan)元(yuan)；常規直(zhi)(zhi)流(liu)(liu)單(dan)(dan)元(yuan)已(yi)于(yu)6月(yue)30日投運(yun)(yun)送(song)電(dian)(dian)(dian)。柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)單(dan)(dan)元(yuan)額定(ding)(ding)容(rong)量(liang)100萬(wan)千(qian)(qian)(qian)瓦(wa)(wa)、直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)壓±350千(qian)(qian)(qian)伏(fu)，容(rong)量(liang)和(he)電(dian)(dian)(dian)壓等(deng)級均為目前世界柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)最高(gao)水(shui)(shui)平。該工程所需(xu)的大容(rong)量(liang)單(dan)(dan)相(xiang)三繞(rao)組換流(liu)(liu)變(bian)、柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)換流(liu)(liu)閥及閥控(kong)等(deng)核心設(she)備(bei)均為國(guo)內首次(ci)研制并(bing)(bing)成功應用，有效促(cu)進了國(guo)內柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)輸電(dian)(dian)(dian)成套設(she)計技術、試驗技術、裝備(bei)制造業(ye)的發展(zhan)創新，帶動了輸變(bian)電(dian)(dian)(dian)行業(ye)的產業(ye)結構升(sheng)(sheng)級，提升(sheng)(sheng)了我(wo)國(guo)柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)輸電(dian)(dian)(dian)技術水(shui)(shui)平。柔(rou)(rou)性(xing)直(zhi)(zhi)流(liu)(liu)單(dan)(dan)元(yuan)投運(yun)(yun)后，每(mei)年可增送(song)云(yun)南外(wai)送(song)電(dian)(dian)(dian)量(liang)約(yue)90億千(qian)(qian)(qian)瓦(wa)(wa)時，將進一步(bu)滿足云(yun)南汛期(qi)富余(yu)水(shui)(shui)電(dian)(dian)(dian)消納需(xu)求，并(bing)(bing)進一步(bu)提升(sheng)(sheng)南方(fang)電(dian)(dian)(dian)網(wang)主網(wang)架安全穩定(ding)(ding)運(yun)(yun)行水(shui)(shui)平。

背(bei)靠(kao)背(bei)直(zhi)流(liu)工(gong)程(cheng)是(shi)將(jiang)高壓直(zhi)流(liu)輸電(dian)(dian)(dian)的(de)(de)(de)整流(liu)站(zhan)(zhan)(zhan)和(he)逆變(bian)(bian)站(zhan)(zhan)(zhan)合并在一個換(huan)流(liu)站(zhan)(zhan)(zhan)內，在同(tong)一個換(huan)流(liu)站(zhan)(zhan)(zhan)內完(wan)成交流(liu)變(bian)(bian)直(zhi)流(liu)、再由直(zhi)流(liu)變(bian)(bian)交流(liu)的(de)(de)(de)換(huan)流(liu)過程(cheng)，可(ke)有(you)效化解(jie)交直(zhi)流(liu)功率轉移引起的(de)(de)(de)電(dian)(dian)(dian)網安全穩(wen)定問題、避免大面積停電(dian)(dian)(dian)風險，提高電(dian)(dian)(dian)網的(de)(de)(de)安全供電(dian)(dian)(dian)可(ke)靠(kao)性。柔(rou)性直(zhi)流(liu)技術(shu)是(shi)新一代的(de)(de)(de)直(zhi)流(liu)輸電(dian)(dian)(dian)技術(shu)，它(ta)不需(xu)要交流(liu)側電(dian)(dian)(dian)壓支撐，控制更靈活，電(dian)(dian)(dian)能質量更高，換(huan)流(liu)站(zhan)(zhan)(zhan)占地也更小，可(ke)有(you)效避免常規直(zhi)流(liu)由于交流(liu)側電(dian)(dian)(dian)壓不穩(wen)而引起的(de)(de)(de)換(huan)相失敗問題。