近日,我國(guo)首個“交(jiao)(jiao)改直(zhi)”輸(shu)電工程(cheng)——揚州至鎮江±200千伏直(zhi)流輸(shu)電工程(cheng)正式竣工投運,這是全球輸(shu)電容量最大(da)的“交(jiao)(jiao)改直(zhi)”項目。盛隆電氣承接(jie)了其中的線路人(ren)工接(jie)地短路試(shi)驗(yan)并成功(gong)開(kai)展,全(quan)面驗(yan)證和(he)評估了直流系統對(dui)故障的應對(dui)能力(li),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(yan)現場
作為(wei)我國(guo)新(xin)型電(dian)力系統建(jian)(jian)設(she)的重點(dian)工程,該工程首次(ci)把在運(yun)交流輸電(dian)線路(lu)改造為(wei)直流輸電(dian)線路(lu),為(wei)世(shi)界輸電(dian)工程領(ling)域解決用電(dian)需求(qiu)大(da)(da)、電(dian)網(wang)飽(bao)和度高、新(xin)建(jian)(jian)空間有限等電(dian)網(wang)發展難題提供(gong)了“中國(guo)方案”。該工程起(qi)于揚(yang)州市(shi)高郵市(shi),止于鎮江(jiang)(jiang)市(shi)大(da)(da)港新(xin)區(qu),線路(lu)全長約110千米(mi),能(neng)(neng)大(da)(da)幅提升(sheng)長江(jiang)(jiang)以北地(di)(di)區(qu)風(feng)電(dian)、光伏等清(qing)潔(jie)能(neng)(neng)源輸送至蘇南地(di)(di)區(qu)消納的能(neng)(neng)力,滿足清(qing)潔(jie)能(neng)(neng)源在長三角地(di)(di)區(qu)的優(you)化配置需求(qiu)。
運行中的江(jiang)蘇(su)鎮江(jiang)±200千伏圌山換流站
傳(chuan)統(tong)直(zhi)(zhi)流(liu)工程(cheng)正負兩極(ji)(ji)中(zhong),一(yi)極(ji)(ji)發生故(gu)障時,另(ling)一(yi)極(ji)(ji)仍可(ke)形成(cheng)通流(liu)回路(lu),將故(gu)障極(ji)(ji)直(zhi)(zhi)流(liu)功率轉(zhuan)移至非故(gu)障極(ji)(ji),電能傳(chuan)輸(shu)不會中(zhong)斷。揚鎮直(zhi)(zhi)流(liu)工程(cheng)在國內首創“嵌入式(shi)”交直(zhi)(zhi)流(liu)混聯系統(tong)方案,即將直(zhi)(zhi)流(liu)線路(lu)“嵌入”到原有(you)220千伏交流(liu)電網中(zhong),傳(chuan)統(tong)直(zhi)(zhi)流(liu)故(gu)障處理策(ce)略(lve)對其并不適用。為此,國網江(jiang)蘇(su)電力(li)公司(si)首次提出(chu)直(zhi)(zhi)流(liu)故(gu)障穿(chuan)越重啟(qi)策(ce)略(lve),本次試驗(yan)旨在驗(yan)證該策(ce)略(lve)有(you)效(xiao)性和可(ke)靠性,并獲取重要參數(shu)。
承接(jie)全國(guo)首次此(ci)類試(shi)驗(yan),盛(sheng)隆無經(jing)驗(yan)可借鑒,通過(guo)前期(qi)數周扎實(shi)調研(yan),與行業(ye)專家(jia)共同(tong)研(yan)究摸索,最(zui)終于(yu)4月初順利(li)完成。試(shi)驗(yan)選(xuan)取揚(yang)州少游、鎮江圌(chui)山換流站附近線路,采用(yong)發射彈(dan)射彈(dan)和無人(ren)機掛線兩種實(shi)施方(fang)法,分(fen)別開展了(le)(le)(le)人(ren)工短路試(shi)驗(yan),經(jing)驗(yan)證(zheng),達到(dao)了(le)(le)(le)預期(qi)目標。該(gai)試(shi)驗(yan)圓(yuan)滿完成,獲得業(ye)主方(fang)的滿意和認可,也證(zheng)明了(le)(le)(le)盛(sheng)隆電氣的科技實(shi)力(li)。
工作人(ren)員在巡視電氣設備運行情(qing)況(kuang)
“交改(gai)直(zhi)”是(shi)提高能源效(xiao)率、節能減碳的(de)電(dian)力行業重(zhong)點(dian)工(gong)(gong)程,參與(yu)其中(zhong)(zhong)(zhong)是(shi)盛隆電(dian)氣(qi)作為高新技術(shu)(shu)企業應(ying)該(gai)承擔(dan)的(de)社(she)會(hui)責任。這(zhe)也是(shi)盛隆電(dian)氣(qi)在“交改(gai)直(zhi)”重(zhong)點(dian)工(gong)(gong)程中(zhong)(zhong)(zhong)承接(jie)的(de)第(di)二個“全國(guo)首(shou)次(ci)”,2020年12月(yue),盛隆參與(yu)江(jiang)蘇(su)省蘇(su)州市同里鎮的(de)“中(zhong)(zhong)(zhong)低壓(ya)直(zhi)流配(pei)用電(dian)系統(tong)關鍵技術(shu)(shu)及(ji)應(ying)用示范工(gong)(gong)程”,負責該(gai)工(gong)(gong)程的(de)系統(tong)調試工(gong)(gong)作,該(gai)工(gong)(gong)程是(shi)國(guo)家(jia)重(zhong)點(dian)研發計劃項(xiang)目(mu),也是(shi)全國(guo)首(shou)個具有多電(dian)壓(ya)等級的(de)直(zhi)流配(pei)電(dian)網,已于2022年通(tong)過驗收。
近日,我國(guo)首(shou)個“交改直”輸(shu)(shu)電工(gong)程(cheng)——揚州(zhou)至(zhi)鎮江(jiang)±200千伏直流輸(shu)(shu)電工(gong)程(cheng)正式(shi)竣工(gong)投運,這(zhe)是(shi)全球輸(shu)(shu)電容量最大的“交改直”項目。盛隆電氣承接了其中的線路人(ren)工(gong)接地短路試驗(yan)并成功(gong)開展,全(quan)面(mian)驗證和(he)評(ping)估了直流系統對故障的應(ying)對能力,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
作為(wei)我(wo)國(guo)新(xin)型電(dian)(dian)力(li)系統(tong)建設的(de)重點工程,該工程首次把(ba)在運交流輸電(dian)(dian)線(xian)(xian)路(lu)改造為(wei)直流輸電(dian)(dian)線(xian)(xian)路(lu),為(wei)世界輸電(dian)(dian)工程領域解決用(yong)電(dian)(dian)需求大(da)、電(dian)(dian)網(wang)飽(bao)和度高、新(xin)建空間(jian)有限(xian)等(deng)電(dian)(dian)網(wang)發展難題提(ti)供了“中國(guo)方案”。該工程起于揚州市(shi)高郵市(shi),止于鎮(zhen)江市(shi)大(da)港(gang)新(xin)區,線(xian)(xian)路(lu)全長(chang)(chang)約(yue)110千米(mi),能(neng)(neng)大(da)幅提(ti)升長(chang)(chang)江以北地(di)區風電(dian)(dian)、光伏等(deng)清(qing)潔(jie)能(neng)(neng)源(yuan)輸送至蘇(su)南地(di)區消(xiao)納的(de)能(neng)(neng)力(li),滿足(zu)清(qing)潔(jie)能(neng)(neng)源(yuan)在長(chang)(chang)三角(jiao)地(di)區的(de)優(you)化配置需求。
運行中(zhong)的江蘇鎮江±200千伏(fu)圌山(shan)換流站
傳統(tong)直(zhi)流(liu)工程(cheng)(cheng)正(zheng)負兩極中(zhong),一極發生故障時,另一極仍可(ke)形成通流(liu)回路,將(jiang)故障極直(zhi)流(liu)功(gong)率(lv)轉移至非(fei)故障極,電(dian)能(neng)傳輸(shu)不會(hui)中(zhong)斷。揚鎮直(zhi)流(liu)工程(cheng)(cheng)在(zai)國內首(shou)創(chuang)“嵌入式”交直(zhi)流(liu)混聯系(xi)統(tong)方案,即將(jiang)直(zhi)流(liu)線路“嵌入”到原有220千(qian)伏交流(liu)電(dian)網中(zhong),傳統(tong)直(zhi)流(liu)故障處理(li)策略對其并不適(shi)用。為此,國網江蘇電(dian)力公司首(shou)次提出(chu)直(zhi)流(liu)故障穿越重啟策略,本次試驗旨在(zai)驗證該策略有效(xiao)性和可(ke)靠性,并獲取重要參(can)數。
承接(jie)全國首次此類(lei)試驗(yan)(yan),盛隆(long)無(wu)經驗(yan)(yan)可借鑒,通過(guo)前期數周扎實調研,與行(xing)業專家共同研究摸索,最終于4月初順利完(wan)(wan)成。試驗(yan)(yan)選取揚(yang)州少游、鎮江圌山換流站(zhan)附近線(xian)(xian)路(lu),采(cai)用發射彈射彈和(he)無(wu)人機掛線(xian)(xian)兩種實施方法,分別(bie)開展了(le)人工(gong)短(duan)路(lu)試驗(yan)(yan),經驗(yan)(yan)證,達到了(le)預期目標。該試驗(yan)(yan)圓滿(man)完(wan)(wan)成,獲(huo)得業主方的滿(man)意和(he)認可,也證明了(le)盛隆(long)電氣(qi)的科技(ji)實力。
工作人員在巡視電氣設備(bei)運行(xing)情況
“交改(gai)直(zhi)(zhi)”是(shi)提(ti)高能(neng)源效率、節能(neng)減碳的電力行業重(zhong)點工(gong)(gong)(gong)(gong)程,參與其中是(shi)盛隆(long)電氣作(zuo)為高新技術企業應該(gai)(gai)承(cheng)擔的社會責(ze)任。這也是(shi)盛隆(long)電氣在“交改(gai)直(zhi)(zhi)”重(zhong)點工(gong)(gong)(gong)(gong)程中承(cheng)接的第(di)二個“全國(guo)首(shou)次”,2020年12月,盛隆(long)參與江(jiang)蘇省蘇州(zhou)市同里鎮的“中低(di)壓直(zhi)(zhi)流配(pei)用電系統關(guan)鍵(jian)技術及應用示范工(gong)(gong)(gong)(gong)程”,負責(ze)該(gai)(gai)工(gong)(gong)(gong)(gong)程的系統調試工(gong)(gong)(gong)(gong)作(zuo),該(gai)(gai)工(gong)(gong)(gong)(gong)程是(shi)國(guo)家重(zhong)點研發計(ji)劃(hua)項(xiang)目,也是(shi)全國(guo)首(shou)個具有多(duo)電壓等級的直(zhi)(zhi)流配(pei)電網,已于2022年通過驗收。