近日,我國首(shou)個(ge)“交(jiao)改(gai)直”輸(shu)電(dian)工(gong)程(cheng)——揚(yang)州至(zhi)鎮(zhen)江±200千伏直流輸(shu)電(dian)工(gong)程(cheng)正式竣工(gong)投運,這是全球輸(shu)電(dian)容量最大的“交(jiao)改(gai)直”項目。盛隆電氣承(cheng)接了其中的(de)線路(lu)人工接地短路(lu)試驗并成功開展,全(quan)面(mian)驗證和(he)評估了(le)直流系統對故障的(de)應對能(neng)力,這是我國首次成功開展“嵌入式”直流工程線路人工接地短路試驗。
試驗現場(chang)
作(zuo)為(wei)我(wo)國新(xin)型電(dian)(dian)力(li)系(xi)統(tong)建設的重點工程,該工程首次把在(zai)運交流輸(shu)(shu)電(dian)(dian)線(xian)路改(gai)造為(wei)直(zhi)流輸(shu)(shu)電(dian)(dian)線(xian)路,為(wei)世界輸(shu)(shu)電(dian)(dian)工程領域(yu)解決用電(dian)(dian)需求(qiu)大(da)、電(dian)(dian)網(wang)飽和度(du)高、新(xin)建空間有限等電(dian)(dian)網(wang)發展難題提供了(le)“中國方(fang)案”。該工程起于(yu)揚(yang)州市(shi)高郵市(shi),止(zhi)于(yu)鎮(zhen)江市(shi)大(da)港新(xin)區(qu)(qu),線(xian)路全長約110千米,能大(da)幅提升長江以北地區(qu)(qu)風電(dian)(dian)、光伏等清潔能源輸(shu)(shu)送(song)至蘇南地區(qu)(qu)消(xiao)納的能力(li),滿足清潔能源在(zai)長三角地區(qu)(qu)的優化配(pei)置(zhi)需求(qiu)。
運(yun)行中的江蘇(su)鎮江±200千伏圌山換流站
傳統(tong)直(zhi)(zhi)(zhi)流(liu)(liu)工程正負(fu)兩(liang)極(ji)中(zhong),一極(ji)發生故(gu)(gu)障(zhang)時,另一極(ji)仍可(ke)形成(cheng)通流(liu)(liu)回路,將(jiang)故(gu)(gu)障(zhang)極(ji)直(zhi)(zhi)(zhi)流(liu)(liu)功率轉移至非故(gu)(gu)障(zhang)極(ji),電(dian)能傳輸不(bu)會中(zhong)斷。揚鎮直(zhi)(zhi)(zhi)流(liu)(liu)工程在國內(nei)首創“嵌(qian)(qian)入式”交(jiao)直(zhi)(zhi)(zhi)流(liu)(liu)混聯系統(tong)方案(an),即(ji)將(jiang)直(zhi)(zhi)(zhi)流(liu)(liu)線路“嵌(qian)(qian)入”到原(yuan)有(you)(you)220千伏交(jiao)流(liu)(liu)電(dian)網中(zhong),傳統(tong)直(zhi)(zhi)(zhi)流(liu)(liu)故(gu)(gu)障(zhang)處理策(ce)(ce)略(lve)對其(qi)并(bing)(bing)不(bu)適(shi)用。為此,國網江蘇(su)電(dian)力公司首次(ci)(ci)提出直(zhi)(zhi)(zhi)流(liu)(liu)故(gu)(gu)障(zhang)穿越重(zhong)啟策(ce)(ce)略(lve),本次(ci)(ci)試驗旨在驗證(zheng)該策(ce)(ce)略(lve)有(you)(you)效性(xing)和可(ke)靠(kao)性(xing),并(bing)(bing)獲取重(zhong)要參數。
承接全(quan)國(guo)首次此(ci)類(lei)試(shi)驗,盛(sheng)隆(long)無經驗可(ke)借鑒,通過前期(qi)數周扎實調研(yan),與行業專家共(gong)同研(yan)究摸索(suo),最(zui)終(zhong)于4月初順利完成(cheng)。試(shi)驗選取(qu)揚州少(shao)游、鎮江(jiang)圌山(shan)換流站附(fu)近(jin)線路(lu),采用發(fa)射彈射彈和(he)無人機掛線兩(liang)種實施(shi)方法,分別開展了人工短路(lu)試(shi)驗,經驗證(zheng),達到了預(yu)期(qi)目(mu)標(biao)。該(gai)試(shi)驗圓滿(man)完成(cheng),獲(huo)得業主方的(de)滿(man)意(yi)和(he)認可(ke),也證(zheng)明了盛(sheng)隆(long)電氣的(de)科技實力(li)。
工(gong)作人員在巡(xun)視電氣設備(bei)運行情況
“交(jiao)改直”是(shi)提高(gao)能源(yuan)效率、節(jie)能減碳的電(dian)(dian)力(li)行業重(zhong)點(dian)工(gong)(gong)程(cheng),參(can)與其中(zhong)是(shi)盛(sheng)隆(long)電(dian)(dian)氣(qi)(qi)作為高(gao)新技術企業應該(gai)承(cheng)擔(dan)的社會責任。這也是(shi)盛(sheng)隆(long)電(dian)(dian)氣(qi)(qi)在(zai)“交(jiao)改直”重(zhong)點(dian)工(gong)(gong)程(cheng)中(zhong)承(cheng)接(jie)的第二(er)個(ge)“全(quan)國(guo)(guo)首次”,2020年12月,盛(sheng)隆(long)參(can)與江蘇省蘇州市同里(li)鎮(zhen)的“中(zhong)低(di)壓直流(liu)配用(yong)電(dian)(dian)系統關鍵技術及應用(yong)示范工(gong)(gong)程(cheng)”,負責該(gai)工(gong)(gong)程(cheng)的系統調試工(gong)(gong)作,該(gai)工(gong)(gong)程(cheng)是(shi)國(guo)(guo)家重(zhong)點(dian)研發(fa)計(ji)劃項目,也是(shi)全(quan)國(guo)(guo)首個(ge)具(ju)有多電(dian)(dian)壓等(deng)級(ji)的直流(liu)配電(dian)(dian)網(wang),已于2022年通過驗收。
近日,我國首個“交改直”輸(shu)電工(gong)(gong)程——揚州(zhou)至鎮江±200千伏直流輸(shu)電工(gong)(gong)程正(zheng)式竣(jun)工(gong)(gong)投運,這是全(quan)球(qiu)輸(shu)電容量最(zui)大的“交改直”項目。盛隆電氣承接了其中(zhong)的線路人工接地短路試(shi)驗并成功開展,全面驗(yan)證和評估了直流系統對(dui)故(gu)障的應對(dui)能力,這是我國首次成功開展“嵌入式”直流工程線路人工接地短路試驗。
試驗現場(chang)
作為我國(guo)新(xin)型電(dian)(dian)力系統建設的重(zhong)點工(gong)程(cheng),該工(gong)程(cheng)首次把在運交流輸(shu)電(dian)(dian)線路改造(zao)為直流輸(shu)電(dian)(dian)線路,為世界輸(shu)電(dian)(dian)工(gong)程(cheng)領(ling)域解決用電(dian)(dian)需求大(da)、電(dian)(dian)網飽和(he)度高(gao)、新(xin)建空間有(you)限等(deng)電(dian)(dian)網發展(zhan)難題提供了(le)“中國(guo)方案”。該工(gong)程(cheng)起(qi)于揚州市高(gao)郵(you)市,止于鎮江(jiang)市大(da)港(gang)新(xin)區(qu),線路全長約(yue)110千米,能(neng)大(da)幅提升(sheng)長江(jiang)以北地區(qu)風電(dian)(dian)、光伏(fu)等(deng)清(qing)潔能(neng)源輸(shu)送至(zhi)蘇(su)南地區(qu)消納的能(neng)力,滿足清(qing)潔能(neng)源在長三角地區(qu)的優化(hua)配置(zhi)需求。
運行(xing)中的江蘇(su)鎮江±200千伏圌山(shan)換(huan)流站
傳(chuan)統直流(liu)(liu)工程(cheng)正負兩極(ji)(ji)中(zhong),一(yi)極(ji)(ji)發生(sheng)故(gu)障(zhang)時(shi),另一(yi)極(ji)(ji)仍可形成通流(liu)(liu)回(hui)路,將故(gu)障(zhang)極(ji)(ji)直流(liu)(liu)功率轉移至非故(gu)障(zhang)極(ji)(ji),電能傳(chuan)輸不(bu)會(hui)中(zhong)斷。揚(yang)鎮直流(liu)(liu)工程(cheng)在(zai)國(guo)內首創(chuang)“嵌入式(shi)”交直流(liu)(liu)混聯系統方(fang)案,即將直流(liu)(liu)線路“嵌入”到(dao)原有220千(qian)伏交流(liu)(liu)電網中(zhong),傳(chuan)統直流(liu)(liu)故(gu)障(zhang)處理策(ce)略(lve)對其(qi)并不(bu)適用(yong)。為此,國(guo)網江蘇電力公司(si)首次提出(chu)直流(liu)(liu)故(gu)障(zhang)穿越重(zhong)啟策(ce)略(lve),本次試(shi)驗旨在(zai)驗證該(gai)策(ce)略(lve)有效性和可靠性,并獲(huo)取重(zhong)要參數。
承接全國首次(ci)此類(lei)試驗(yan),盛隆無經驗(yan)可借鑒,通(tong)過前期數周扎實調研,與行業專家共同研究摸索,最終于4月初(chu)順利完成(cheng)。試驗(yan)選取(qu)揚(yang)州(zhou)少(shao)游、鎮江圌山(shan)換流站附近線(xian)路,采(cai)用發(fa)射彈(dan)射彈(dan)和無人機掛線(xian)兩種(zhong)實施方法,分別開展了人工短(duan)路試驗(yan),經驗(yan)證,達到了預期目標。該試驗(yan)圓滿完成(cheng),獲得(de)業主方的滿意和認可,也(ye)證明了盛隆電(dian)氣的科技實力。
工(gong)作人員(yuan)在巡視電氣(qi)設備運行情況
“交改直(zhi)(zhi)(zhi)”是(shi)(shi)提高能源(yuan)效(xiao)率(lv)、節能減碳的電(dian)(dian)力行(xing)業重點(dian)工(gong)程(cheng)(cheng),參與(yu)其中是(shi)(shi)盛(sheng)隆(long)電(dian)(dian)氣作(zuo)為高新(xin)技(ji)術企業應該承擔的社會責(ze)任。這(zhe)也是(shi)(shi)盛(sheng)隆(long)電(dian)(dian)氣在“交改直(zhi)(zhi)(zhi)”重點(dian)工(gong)程(cheng)(cheng)中承接(jie)的第二個“全國首次”,2020年(nian)12月,盛(sheng)隆(long)參與(yu)江蘇(su)省蘇(su)州市同(tong)里鎮(zhen)的“中低(di)壓(ya)直(zhi)(zhi)(zhi)流(liu)(liu)配(pei)用電(dian)(dian)系(xi)統(tong)關鍵技(ji)術及(ji)應用示范工(gong)程(cheng)(cheng)”,負責(ze)該工(gong)程(cheng)(cheng)的系(xi)統(tong)調試工(gong)作(zuo),該工(gong)程(cheng)(cheng)是(shi)(shi)國家重點(dian)研發計劃項目(mu),也是(shi)(shi)全國首個具有(you)多電(dian)(dian)壓(ya)等級的直(zhi)(zhi)(zhi)流(liu)(liu)配(pei)電(dian)(dian)網,已于(yu)2022年(nian)通過驗收。