行業動態
Industry dynamic-
201807-11
農網低壓綜合配電箱設計
智能(neng)(neng)電(dian)(dian)(dian)網(wang)(wang)是一個完(wan)整的信息架構和(he)基(ji)礎設(she)施體系,它能(neng)(neng)實現對電(dian)(dian)(dian)力系統中運(yun)行的電(dian)(dian)(dian)力設(she)備進行持續監測(ce)和(he)控(kong)制(zhi),提高(gao)(gao)電(dian)(dian)(dian)網(wang)(wang)運(yun)營部(bu)門對電(dian)(dian)(dian)網(wang)(wang)管理(li)的工(gong)作效率(lv)和(he)管理(li)水平(ping),提高(gao)(gao)電(dian)(dian)(dian)網(wang)(wang)運(yun)行的可靠性。低(di)壓(ya)臺(tai)(tai)(tai)區(qu)(qu)綜合配電(dian)(dian)(dian)箱是實現智能(neng)(neng)電(dian)(dian)(dian)網(wang)(wang)基(ji)礎設(she)施的一個組成部(bu)分(fen),它通常(chang)安(an)裝(zhuang)在戶外配電(dian)(dian)(dian)變壓(ya)器(qi)臺(tai)(tai)(tai)區(qu)(qu)具有(you)電(dian)(dian)(dian)能(neng)(neng)分(fen)配、控(kong)制(zhi)、保護、監測(ce)功(gong)能(neng)(neng)以及(ji)對電(dian)(dian)(dian)網(wang)(wang)進行低(di)壓(ya)無功(gong)功(gong)率(lv)補償(chang)功(gong)能(neng)(neng)。低(di)壓(ya)臺(tai)(tai)(tai)區(qu)(qu)綜合配電(dian)(dian)(dian)箱運(yun)行可靠性直接影響到(dao)智能(neng)(neng)電(dian)(dian)(dian)網(wang)(wang)的可靠性和(he)安(an)全性。 -
201807-09
變電運行中變壓器的節能效用
變(bian)壓器節能改(gai)(gai)(gai)造的(de)具(ju)體方法(fa)(fa)(fa)(fa)包(bao)括：降容(rong)(rong)(rong)、保(bao)(bao)容(rong)(rong)(rong)、增(zeng)(zeng)容(rong)(rong)(rong)和調容(rong)(rong)(rong)4種方法(fa)(fa)(fa)(fa)。 (1)繞(rao)(rao)組(zu)(zu)(zu)改(gai)(gai)(gai)制法(fa)(fa)(fa)(fa)：改(gai)(gai)(gai)高(gao)(gao)、低壓繞(rao)(rao)線組(zu)(zu)(zu)降容(rong)(rong)(rong)法(fa)(fa)(fa)(fa);改(gai)(gai)(gai)高(gao)(gao)、低壓繞(rao)(rao)組(zu)(zu)(zu)調容(rong)(rong)(rong)法(fa)(fa)(fa)(fa);改(gai)(gai)(gai)高(gao)(gao)、低壓繞(rao)(rao)線組(zu)(zu)(zu)質量法(fa)(fa)(fa)(fa);改(gai)(gai)(gai)高(gao)(gao)、低壓繞(rao)(rao)組(zu)(zu)(zu)增(zeng)(zeng)容(rong)(rong)(rong)法(fa)(fa)(fa)(fa)。 (2)鐵(tie)(tie)心(xin)(xin)(xin)改(gai)(gai)(gai)制法(fa)(fa)(fa)(fa)：調換全(quan)(quan)部鐵(tie)(tie)心(xin)(xin)(xin)法(fa)(fa)(fa)(fa);調換部分鐵(tie)(tie)心(xin)(xin)(xin)法(fa)(fa)(fa)(fa);調換部分柱芯法(fa)(fa)(fa)(fa);調換全(quan)(quan)部軛鐵(tie)(tie)法(fa)(fa)(fa)(fa);調換部分軛鐵(tie)(tie)法(fa)(fa)(fa)(fa);增(zeng)(zeng)減芯柱級(ji)數法(fa)(fa)(fa)(fa);增(zeng)(zeng)減芯柱直(zhi)徑法(fa)(fa)(fa)(fa);單片重(zhong)(zhong)疊(die)鐵(tie)(tie)心(xin)(xin)(xin)法(fa)(fa)(fa)(fa);鐵(tie)(tie)心(xin)(xin)(xin)硅鋼(gang)片重(zhong)(zhong)疊(die)法(fa)(fa)(fa)(fa);鐵(tie)(tie)心(xin)(xin)(xin)硅鋼(gang)片重(zhong)(zhong)新絕緣法(fa)(fa)(fa)(fa)。 (3)繞(rao)(rao)組(zu)(zu)(zu)、鐵(tie)(tie)心(xin)(xin)(xin)全(quan)(quan)改(gai)(gai)(gai)法(fa)(fa)(fa)(fa)：全(quan)(quan)改(gai)(gai)(gai)繞(rao)(rao)組(zu)(zu)(zu)、鐵(tie)(tie)心(xin)(xin)(xin)增(zeng)(zeng)容(rong)(rong)(rong)法(fa)(fa)(fa)(fa);全(quan)(quan)改(gai)(gai)(gai)繞(rao)(rao)組(zu)(zu)(zu)、鐵(tie)(tie)心(xin)(xin)(xin)保(bao)(bao)容(rong)(rong)(rong)法(fa)(fa)(fa)(fa);全(quan)(quan)組(zu)(zu)(zu)繞(rao)(rao)組(zu)(zu)(zu)、鐵(tie)(tie)心(xin)(xin)(xin)降容(rong)(rong)(rong)法(fa)(fa)(fa)(fa)。 -
201807-07
節能型變壓器在電力系統中的運用與分析
1.節能(neng)型變壓(ya)器的(de)概念 “節能(neng)型變壓(ya)器”是性(xing)能(neng)參數(shu)空載(zai)、負(fu)載(zai)損耗均比GB/T6451平均下降10%以上的(de)三(san)相(xiang)油浸式電(dian)力變壓(ya)器(10kV及(ji)35kV電(dian)壓(ya)等級);產品性(xing)能(neng)參數(shu)空載(zai)、負(fu)載(zai)損耗比Gwr10228(組I)平均降低 10%以上的(de)干式變壓(ya)器。 -
201807-05
10KV配電變壓器節能運行措施探討
在對(dui)多(duo)臺10kV配電變(bian)(bian)壓器(qi)聯合調度(du)節(jie)(jie)(jie)能運行(xing)工況特(te)性進行(xing)簡單分析(xi)后(hou)，從(cong)優選節(jie)(jie)(jie)能經濟型(xing)配電變(bian)(bian)壓器(qi)、采用多(duo)臺配電變(bian)(bian)壓器(qi)聯合運行(xing)、調整配電變(bian)(bian)壓器(qi)相間不平衡負載率、進行(xing)適當(dang)無功補(bu)償(chang)等方面，詳細探討了10kV配電變(bian)(bian)壓器(qi)節(jie)(jie)(jie)能經濟調度(du)運行(xing)技術措施，確保10kV配電變(bian)(bian)壓器(qi)運行(xing)具有(you)較高的安(an)全(quan)可靠性和節(jie)(jie)(jie)能經濟性。 -
201807-02
變壓器節能技術研究
變(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)是配(pei)電(dian)(dian)(dian)網中(zhong)(zhong)不同電(dian)(dian)(dian)壓(ya)(ya)等級電(dian)(dian)(dian)能(neng)間相互轉換(huan)的(de)(de)主要(yao)(yao)設(she)備，在(zai)電(dian)(dian)(dian)能(neng)生(sheng)產、輸(shu)(shu)(shu)送、調(diao)度分配(pei)等過程中(zhong)(zhong)起到非(fei)常(chang)重(zhong)要(yao)(yao)的(de)(de)作(zuo)用。變(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)在(zai)電(dian)(dian)(dian)力(li)系(xi)統(tong)中(zhong)(zhong)的(de)(de)使用數(shu)量(liang)極其廣(guang)泛，從發(fa)電(dian)(dian)(dian)、輸(shu)(shu)(shu)電(dian)(dian)(dian)、配(pei)電(dian)(dian)(dian)及用電(dian)(dian)(dian)各環節構成的(de)(de)電(dian)(dian)(dian)力(li)系(xi)統(tong)來看，電(dian)(dian)(dian)能(neng)從發(fa)電(dian)(dian)(dian)廠輸(shu)(shu)(shu)出到用戶使用一般需(xu)要(yao)(yao)3～5次的(de)(de)變(bian)(bian)(bian)壓(ya)(ya)過程。根據國內外的(de)(de)統(tong)計(ji)數(shu)字，運(yun)(yun)行(xing)(xing)變(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)的(de)(de)容量(liang)通常(chang)是發(fa)電(dian)(dian)(dian)容量(liang)的(de)(de)4～7倍，是運(yun)(yun)行(xing)(xing)電(dian)(dian)(dian)機容量(liang)的(de)(de)5～8倍，這就決定了變(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)必須是一個高效能(neng)的(de)(de)設(she)備。盡管如此，但因其數(shu)量(liang)多，容量(liang)大，所以(yi)在(zai)廣(guang)義電(dian)(dian)(dian)力(li)系(xi)統(tong)運(yun)(yun)行(xing)(xing)中(zhong)(zhong)，變(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)總(zong)的(de)(de)電(dian)(dian)(dian)能(neng)損耗約占發(fa)電(dian)(dian)(dian)量(liang)的(de)(de)10%。這對全國而言(yan)，意味(wei)著全年(nian) -
201807-01
變壓器的經濟運行
變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)是電(dian)(dian)(dian)力傳送過(guo)程中的(de)主要電(dian)(dian)(dian)力設備。變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)在(zai)變(bian)壓(ya)(ya)(ya)(ya)和傳遞電(dian)(dian)(dian)功率時，其(qi)自身要產(chan)生有功功率損失和無功功率消耗。在(zai)配電(dian)(dian)(dian)線路上，由于(yu)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)臺數多、總容量(liang)大，所以(yi)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)總的(de)電(dian)(dian)(dian)能損失約占(zhan)整(zheng)個配電(dian)(dian)(dian)系統損失的(de)30%左(zuo)右。因此，全面開(kai)展變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)經濟(ji)運(yun)(yun)(yun)(yun)行(xing)是實現(xian)配電(dian)(dian)(dian)系統經濟(ji)運(yun)(yun)(yun)(yun)行(xing)的(de)重要環節。變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)經濟(ji)運(yun)(yun)(yun)(yun)行(xing)是指在(zai)傳輸(shu)電(dian)(dian)(dian)量(liang)相同的(de)條(tiao)件下，通過(guo)擇優選(xuan)取(qu)最佳運(yun)(yun)(yun)(yun)行(xing)方式和調整(zheng)負載，使變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)電(dian)(dian)(dian)能損失最低(di)。換言(yan)之，經濟(ji)運(yun)(yun)(yun)(yun)行(xing)就(jiu)是充分發揮變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)效能，合理(li)地選(xuan)擇運(yun)(yun)(yun)(yun)行(xing)方式，從(cong)而降低(di)用電(dian)(dian)(dian)單耗。所以(yi)，變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)經濟(ji)運(yun)(yun)(yun)(yun)行(xing)無需投資，只要加強供、用電(dian)(dian)(dian)科學管理(li)， -
201806-28
淺談電力變壓器故障及處理
針對(dui)電力變(bian)(bian)壓器(qi)(qi)在運行中產生(sheng)(sheng)的(de)(de)(de)故(gu)(gu)障(zhang)的(de)(de)(de)原因以及處理(li)方(fang)法進(jin)行簡要(yao)的(de)(de)(de)分析(xi)，合理(li)準確的(de)(de)(de)對(dui)變(bian)(bian)壓器(qi)(qi)發(fa)生(sheng)(sheng)故(gu)(gu)障(zhang)排(pai)除，能(neng)夠保證電力系統安全(quan)可靠運行起(qi)到(dao)重要(yao)作用(yong)。一般來說變(bian)(bian)壓器(qi)(qi)產生(sheng)(sheng)故(gu)(gu)障(zhang)主要(yao)是由于其(qi)內部繞組短路、變(bian)(bian)壓器(qi)(qi)油老化、本(ben)體附件異常等方(fang)面而(er)造成的(de)(de)(de)，而(er)外在自然環境及人(ren)為因素也有(you)可能(neng)造成其(qi)故(gu)(gu)障(zhang)的(de)(de)(de)產生(sheng)(sheng)，準確分析(xi)找出變(bian)(bian)壓器(qi)(qi)故(gu)(gu)障(zhang)發(fa)上生(sheng)(sheng)原因，從而(er)運用(yong)科學(xue)的(de)(de)(de)處理(li)方(fang)法排(pai)除故(gu)(gu)障(zhang)。 -
201806-27
變壓器狀態監控與故障分析診斷
通過對現(xian)行檢(jian)修檢(jian)測(ce)體制方法優缺點對比，分析(xi)了(le)開拓應用(yong)變(bian)壓器類電力設備狀態監測(ce)和故障診斷技術的意(yi)義，研究了(le)現(xian)在變(bian)壓器檢(jian)測(ce)與故障診斷技術，并對該技術現(xian)今發展存在的問題和發展前景進行了(le)介紹。 -
201806-26
關于變壓器狀態檢修技術的要點認知
傳(chuan)統方式對變(bian)(bian)壓器(qi)進(jin)行檢(jian)修過程中存(cun)在(zai)(zai)周期、費用、技術(shu)方面(mian)的問(wen)題(ti)，進(jin)而出現變(bian)(bian)壓器(qi)的擊穿(chuan)、過熱(re)和(he)短路等故(gu)障，必須(xu)對此進(jin)行研(yan)究(jiu)，以變(bian)(bian)壓器(qi)狀(zhuang)態(tai)檢(jian)修技術(shu)為中心，摸索并探(tan)討出變(bian)(bian)壓器(qi)狀(zhuang)態(tai)檢(jian)修各(ge)環節和(he)技術(shu)的要(yao)點，使變(bian)(bian)壓器(qi)檢(jian)查和(he)維修方式得到根本地轉變(bian)(bian)，在(zai)(zai)技術(shu)、制度、體(ti)系方面(mian)確保(bao)變(bian)(bian)壓器(qi)穩定運行，更好地為電力生產、轉化(hua)和(he)傳(chuan)輸發揮出應有的功(gong)能(neng)。 -
201806-25
變壓器的運行電壓規定
運(yun)(yun)行(xing)電(dian)壓的范圍規定(ding) 運(yun)(yun)行(xing)電(dian)壓一般(ban)不應高于運(yun)(yun)行(xing)分接(jie)額定(ding)電(dian)壓的105%，對于特殊的使用情況，允許不超過110%的額定(ding)電(dian)壓運(yun)(yun)行(xing)。