文章來(lai)源：國家電網公司 發(fa)布時間：2012-03-07
2月28日(ri)，國(guo)(guo)(guo)內首(shou)座柔(rou)性直流(liu)換流(liu)站——35千伏南風換流(liu)站首(shou)次(ci)充電。該換流(liu)站的啟動，意味著我(wo)國(guo)(guo)(guo)柔(rou)性直流(liu)輸(shu)電技術(shu)的研究、開發和應用進入了(le)一(yi)個新的時代，標志著我(wo)國(guo)(guo)(guo)清潔能源的接入技術(shu)達(da)到了(le)國(guo)(guo)(guo)際(ji)領先水平。
上(shang)海(hai)超高壓公司相關(guan)負(fu)責人介(jie)紹：“柔性直流輸(shu)電(dian)(dian)技術能有效(xiao)提(ti)高電(dian)(dian)網接納清潔能源(yuan)的能力，使換(huan)流站(zhan)更加綠色、低碳、環保。與(yu)傳統換(huan)流站(zhan)相比(bi)，柔性換(huan)流站(zhan)變電(dian)(dian)損耗比(bi)傳統站(zhan)更低，輸(shu)電(dian)(dian)效(xiao)率(lv)更高，而且(qie)造價較低，可以提(ti)升電(dian)(dian)網基礎設(she)施(shi)資源(yuan)利(li)用率(lv)和供電(dian)(dian)可靠性，達到節能減排(pai)的目的。
據悉(xi)，上(shang)海(hai)南匯風(feng)電(dian)(dian)場(chang)柔性直(zhi)(zhi)流輸電(dian)(dian)工(gong)程是(shi)國家(jia)電(dian)(dian)網公司智能(neng)變電(dian)(dian)站(zhan)建(jian)設的示范工(gong)程。該(gai)工(gong)程是(shi)國家(jia)電(dian)(dian)網公司2010年(nian)智能(neng)電(dian)(dian)網建(jian)設體(ti)系的重大科技示范項目和(he)堅強智能(neng)電(dian)(dian)網建(jian)設的第(di)二(er)批試(shi)點項目。工(gong)程包括兩個(ge)直(zhi)(zhi)流換(huan)流站(zhan)和(he)8千(qian)(qian)米直(zhi)(zhi)流輸電(dian)(dian)線路。本次啟動的為風(feng)電(dian)(dian)側(ce)——35千(qian)(qian)伏南風(feng)換(huan)流站(zhan)，其額定(ding)運行容量為1.8萬千(qian)(qian)瓦，直(zhi)(zhi)流額定(ding)電(dian)(dian)壓為±30千(qian)(qian)伏，直(zhi)(zhi)流額定(ding)電(dian)(dian)流為300安。該(gai)換(huan)流站(zhan)對(dui)于風(feng)電(dian)(dian)穩定(ding)并入上(shang)海(hai)電(dian)(dian)網提供(gong)了技術支撐。
本次(ci)35千伏(fu)南(nan)風換(huan)流站工程(cheng)建設(she)由上海超高壓公(gong)司負責。中(zhong)國電(dian)科(ke)院等參與設(she)備的研(yan)制(zhi)(zhi)和調試。上海市電(dian)力公(gong)司高度重視此次(ci)柔(rou)性(xing)直(zhi)(zhi)流示(shi)范(fan)工程(cheng)，專(zhuan)門整(zheng)合(he)多方資源(yuan)，就柔(rou)性(xing)直(zhi)(zhi)流換(huan)流站技術進(jin)行(xing)研(yan)究，制(zhi)(zhi)定了從(cong)建設(she)到運行(xing)管理的一整(zheng)套方案。本次(ci)柔(rou)性(xing)直(zhi)(zhi)流示(shi)范(fan)工程(cheng)是(shi)智能電(dian)網系(xi)統理論(lun)研(yan)究成果(guo)轉化為(wei)工程(cheng)實踐的應用典范(fan)。
□新聞鏈接
柔性(xing)直(zhi)流(liu)輸電(dian)(dian)(dian)(dian)技術(shu)(shu)是迄今為止工程應用中最(zui)先(xian)進的(de)電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)子技術(shu)(shu)，也是智能電(dian)(dian)(dian)(dian)網關鍵技術(shu)(shu)之一(yi)(yi)。在風電(dian)(dian)(dian)(dian)領(ling)域，風電(dian)(dian)(dian)(dian)場發(fa)電(dian)(dian)(dian)(dian)能力(li)受制(zhi)(zhi)于風力(li)的(de)大小，傳統的(de)直(zhi)流(liu)站(zhan)對換流(liu)后(hou)的(de)輸出功(gong)率基本不可(ke)調。柔性(xing)直(zhi)流(liu)輸電(dian)(dian)(dian)(dian)技術(shu)(shu)通過“絕緣柵極(ji)雙極(ji)型晶體(ti)管”，能實時、精(jing)確地控制(zhi)(zhi)發(fa)電(dian)(dian)(dian)(dian)功(gong)率。這就好比給變電(dian)(dian)(dian)(dian)站(zhan)裝(zhuang)上了一(yi)(yi)個(ge)“蓄電(dian)(dian)(dian)(dian)池”，使人們能更自如地控制(zhi)(zhi)輸電(dian)(dian)(dian)(dian)線路的(de)電(dian)(dian)(dian)(dian)流(liu)大小和輸送狀(zhuang)態。
柔性(xing)直(zhi)流輸電(dian)技術(shu)還是解決大面(mian)積區域停電(dian)、實(shi)現(xian)遠(yuan)距離孤立送(song)電(dian)的有效途(tu)徑。在相聯的交(jiao)流系統因(yin)故(gu)障全部(bu)停電(dian)后，網(wang)內(nei)柔性(xing)直(zhi)流部(bu)分(fen)因(yin)不受交(jiao)流電(dian)網(wang)故(gu)障影響(xiang)，成(cheng)(cheng)為(wei)孤立小電(dian)網(wang)仍維(wei)持(chi)運行，此時即可帶動(dong)無(wu)自啟(qi)動(dong)能力的發(fa)電(dian)機組，逐漸擴大恢復范圍，完成(cheng)(cheng)整個(ge)系統“黑(hei)啟(qi)動(dong)”過程(cheng)。在新能源日益加快發(fa)展的背景下，柔性(xing)直(zhi)流輸電(dian)技術(shu)具有重要應用價值。