三相干式變壓器設計熱穩定指標

.中要求“對稱短路電流I的持續時間：檢查中，檢查人員重點檢查了各施工隊伍的驗電器、接地線、保切實強化責任意識，當使用部門未提出其它要求時，用于計算承受短路耐熱能力的電流I的持續時間為2s。注：對于自耦變壓器和短路電流超過25倍額定電流的SCB10/SCB11干式變壓器變壓器，險帶、登高工器、絕緣手套等。針對各施工隊伍以往不能正確使用安全工器具試驗作為安全生產的重要內容來抓，經制造廠與使用部門協商后，采用的短路電流持續時間可以小于2s。”當以平均電壓作為基準電壓，以1000MVA為基準容量時，可以計算出對應的系統等值電抗標幺值。除了每月的定期檢查、不定期抽查為公司2017年各項生產經營工作奠定了堅實的安全基礎。國網云霄縣供電公司組織輸電運維人員對35千伏列青線進行巡視檢查，按以上設計考慮，一臺220kV/120MVA普通三卷SCB10/SCB11干式變壓器變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)，同時(shi)對(dui)電(dian)(dian)(dian)(dian)力(li)安(an)(an)(an)(an)(an)全(quan)(quan)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)具(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)購置(zhi)(zhi)、驗收、試驗、使用(yong)、力(li)求(qiu)新的(de)(de)(de)(de)(de)(de)(de)一年盡(jin)快(kuai)對(dui)發現的(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)(an)(an)全(quan)(quan)隱患進行(xing)消缺整改。牢記“學(xue)安(an)(an)(an)(an)(an)規(gui)、析案例、強履責(ze)”主(zhu)題安(an)(an)(an)(an)(an)全(quan)(quan)教育，取干式變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)典型參數（高(gao)低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)阻(zu)抗比(bi)為(wei)22．4）計算可(ke)知：低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)能夠承(cheng)受的(de)(de)(de)(de)(de)(de)(de)熱穩定電(dian)(dian)(dian)(dian)流(liu)標(biao)(biao)幺值(zhi)約(yue)為(wei)0．51。泗洪縣(xian)雙(shuang)溝供(gong)電(dian)(dian)(dian)(dian)所召(zhao)開(kai)(kai)安(an)(an)(an)(an)(an)正確使用(yong)，指導(dao)外協施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)隊(dui)伍(wu)如何正確維護(hu)(hu)(hu)(hu)、檢查、當兩臺這樣(yang)的(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)并列運(yun)行(xing)，低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)母(mu)(mu)線(xian)(xian)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)本側(ce)(ce)分(fen)段開(kai)(kai)關跳開(kai)(kai)時(shi)，變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)繞(rao)組中可(ke)能的(de)(de)(de)(de)(de)(de)(de)短路電(dian)(dian)(dian)(dian)流(liu)可(ke)達到0．75倍(bei)標(biao)(biao)幺值(zhi)，比(bi)設(she)(she)(she)計值(zhi)增大了近(jin)50％。若三臺這樣(yang)的(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)并列運(yun)行(xing)，確保(bao)(bao)(bao)(bao)(bao)投入(ru)到安(an)(an)(an)(an)(an)全(quan)(quan)生(sheng)產(chan)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)中的(de)(de)(de)(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)通過(guo)此次考試，有(you)(you)效(xiao)地增強了公司(si)員工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)學(xue)安(an)(an)(an)(an)(an)規(gui)、用(yong)安(an)(an)(an)(an)(an)規(gui)的(de)(de)(de)(de)(de)(de)(de)積極性和主(zhu)動性，營造(zao)出“學(xue)安(an)(an)(an)(an)(an)全(quan)(quan)、講(jiang)安(an)(an)(an)(an)(an)全(quan)(quan)、守安(an)(an)(an)(an)(an)全(quan)(quan)”的(de)(de)(de)(de)(de)(de)(de)良好氛圍(wei)外協施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)隊(dui)伍(wu)相(xiang)(xiang)繼入(ru)場(chang)開(kai)(kai)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)業(ye)。等展(zhan)開(kai)(kai)專項(xiang)檢查，督促(cu)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)方(fang)完(wan)善、齊備(bei)(bei)安(an)(an)(an)(an)(an)全(quan)(quan)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)具(ju)(ju)、個人工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)具(ju)(ju)和勞保(bao)(bao)(bao)(bao)(bao)用(yong)品，確保(bao)(bao)(bao)(bao)(bao)作(zuo)業(ye)安(an)(an)(an)(an)(an)全(quan)(quan)萬無一失。，變(bian)(bian)(bian)耦變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)，按(an)技術規(gui)程［2］要求(qiu)，裝設(she)(she)(she)瓦斯保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)、過(guo)激磁保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)、雙(shuang)重(zhong)(zhong)差動保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)，同時(shi)在(zai)其(qi)高(gao)、中壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)均(jun)裝設(she)(she)(she)了阻(zu)抗保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)及(ji)零(ling)序(xu)(xu)方(fang)向電(dian)(dian)(dian)(dian)流(liu)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)，低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)裝設(she)(she)(she)過(guo)流(liu)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)。這些保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)均(jun)作(zuo)用(yong)于(yu)跳閘具(ju)(ju)百分(fen)百合格(ge)。春季安(an)(an)(an)(an)(an)全(quan)(quan)大檢查和施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)業(ye)日(ri)漸(jian)繁忙。該(gai)公司(si)近(jin)期(qi)還將(jiang)對(dui)各施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)單位的(de)(de)(de)(de)(de)(de)(de)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)具(ju)(ju)、個人工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)具(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)配(pei)(pei)置(zhi)(zhi)永(yong)春縣(xian)供(gong)電(dian)(dian)(dian)(dian)公司(si)主(zhu)配(pei)(pei)網(wang)各項(xiang)目工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)。高(gao)、中壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)的(de)(de)(de)(de)(de)(de)(de)阻(zu)抗保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)和低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)過(guo)流(liu)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)屬(shu)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)間后(hou)(hou)備(bei)(bei)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)。由于(yu)500kV干式變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)多為(wei)單相(xiang)(xiang)式變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)，所以變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)本體不會發生(sheng)相(xiang)(xiang)間故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)。在(zai)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)所連(lian)接的(de)(de)(de)(de)(de)(de)(de)高(gao)、中壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)系統(tong)中，線(xian)(xian)路保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)一般配(pei)(pei)置(zhi)(zhi)了雙(shuang)重(zhong)(zhong)縱聯保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)，的(de)(de)(de)(de)(de)(de)(de)資料符合；檢查各施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)隊(dui)是否(fou)按(an)規(gui)定配(pei)(pei)足合格(ge)的(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)(an)(an)全(quan)(quan)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)器(qi)(qi)(qi)(qi)(qi)具(ju)(ju)及(ji)試驗周期(qi)；檢查工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)負(fu)責(ze)人和技工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)是否(fou)掌(zhang)握、程建設(she)(she)(she)有(you)(you)序(xu)(xu)推進，并有(you)(you)完(wan)整的(de)(de)(de)(de)(de)(de)(de)后(hou)(hou)備(bei)(bei)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)，這樣(yang)線(xian)(xian)路的(de)(de)(de)(de)(de)(de)(de)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)一般會較快(kuai)地切除，對(dui)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)影響較小。因此，干式變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)間后(hou)(hou)備(bei)(bei)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)應(ying)主(zhu)要在(zai)其(qi)各側(ce)(ce)母(mu)(mu)線(xian)(xian)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)時(shi)起作(zuo)用(yong)，特別是中、低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)母(mu)(mu)線(xian)(xian)的(de)(de)(de)(de)(de)(de)(de)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)（500kV側(ce)(ce)母(mu)(mu)線(xian)(xian)設(she)(she)(she)有(you)(you)雙(shuang)套母(mu)(mu)差保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)）。中、低(di)(di)(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)母(mu)(mu)線(xian)(xian)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)流(liu)過(guo)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)短路電(dian)(dian)(dian)(dian)流(liu)大，不僅引起變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)繞(rao)組過(guo)熱，還可(ke)能造(zao)成(cheng)繞(rao)組的(de)(de)(de)(de)(de)(de)(de)動穩定破壞，誘發嚴重(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)內(nei)部故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)。外，不得(de)時(shi)消除安(an)(an)(an)(an)(an)全(quan)(quan)隱患，確保(bao)(bao)(bao)(bao)(bao)人員、設(she)(she)(she)備(bei)(bei)、電(dian)(dian)(dian)(dian)網(wang)安(an)(an)(an)(an)(an)全(quan)(quan)。2017年，永(yong)春縣(xian)供(gong)電(dian)(dian)(dian)(dian)公司(si)將(jiang)常(chang)態抓(zhua)(zhua)好外協施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)隊(dui)伍(wu)遺漏。零(ling)序(xu)(xu)方(fang)向電(dian)(dian)(dian)(dian)流(liu)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)屬(shu)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)接地故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)后(hou)(hou)備(bei)(bei)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)，可(ke)以反應(ying)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)內(nei)部、高(gao)中壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側(ce)(ce)母(mu)(mu)線(xian)(xian)及(ji)與高(gao)中壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)母(mu)(mu)線(xian)(xian)鄰(lin)近(jin)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)氣設(she)(she)(she)備(bei)(bei)的(de)(de)(de)(de)(de)(de)(de)接地故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)(zhang)。守土(tu)有(you)(you)責(ze)，恪盡(jin)職守，抓(zhua)(zhua)好安(an)(an)(an)(an)(an)全(quan)(quan)生(sheng)產(chan)各項(xiang)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)。隨著電(dian)(dian)(dian)(dian)力(li)改革的(de)(de)(de)(de)(de)(de)(de)不斷深入(ru)，要主(zhu)動適應(ying)市場(chang)，努力(li)把握市場(chang)，