文章來源(yuan)：鞍鋼集(ji)團公司(si) 發布時間：2018-05-02
日前，從(cong)鞍山鋼鐵第二(er)發電廠(chang)獲(huo)悉，在最近一次(ci)CCPP機組(zu)大修中，該廠(chang)通過自主攻關，首次(ci)完成以該廠(chang)為主、外方技術服務為輔的勵磁(ci)系(xi)(xi)統(tong)靜(jing)態和動態試(shi)驗(yan)，解決了CCPP機組(zu)長期勵磁(ci)系(xi)(xi)統(tong)試(shi)驗(yan)困(kun)難的問(wen)題，并填補(bu)該廠(chang)勵磁(ci)系(xi)(xi)統(tong)試(shi)驗(yan)的部分空白。
CCPP發電(dian)機(ji)組(zu)主要依靠電(dian)磁(ci)感應(ying)產生電(dian)流，勵(li)(li)磁(ci)系(xi)(xi)(xi)統(tong)(tong)(tong)作為(wei)提供(gong)勵(li)(li)磁(ci)電(dian)流的(de)重要系(xi)(xi)(xi)統(tong)(tong)(tong)，工作狀(zhuang)態(tai)(tai)直(zhi)接(jie)影(ying)響發電(dian)水平(ping)。根據電(dian)力系(xi)(xi)(xi)統(tong)(tong)(tong)相關規程規定，機(ji)組(zu)勵(li)(li)磁(ci)系(xi)(xi)(xi)統(tong)(tong)(tong)試驗應(ying)配合(he)機(ji)組(zu)大修(xiu)進(jin)行(xing)。由于該廠(chang)CCPP機(ji)組(zu)是從(cong)國外引進(jin)的(de)電(dian)機(ji)產品，與之配套的(de)勵(li)(li)磁(ci)系(xi)(xi)(xi)統(tong)(tong)(tong)也為(wei)外方(fang)配套產品，系(xi)(xi)(xi)統(tong)(tong)(tong)試驗對機(ji)組(zu)各工況要求條件都非常嚴格且繁瑣，在機(ji)組(zu)投產后的(de)歷(li)次大修(xiu)中該廠(chang)多次嘗試對勵(li)(li)磁(ci)系(xi)(xi)(xi)統(tong)(tong)(tong)進(jin)行(xing)靜態(tai)(tai)和動態(tai)(tai)試驗，但僅(jin)能完(wan)成部分項目。
今年年初，該(gai)廠(chang)CCPP機組進(jin)(jin)行(xing)(xing)大修，電(dian)(dian)氣(qi)(qi)繼(ji)電(dian)(dian)保護專業組織技術骨干成立攻關小組繼(ji)續嘗試對勵(li)磁(ci)系統(tong)進(jin)(jin)行(xing)(xing)試驗(yan)(yan)。通過總(zong)結(jie)以(yi)往(wang)試驗(yan)(yan)經(jing)驗(yan)(yan)，全(quan)面(mian)梳理電(dian)(dian)氣(qi)(qi)圖紙(zhi)后(hou)，他(ta)們(men)將電(dian)(dian)氣(qi)(qi)、熱(re)工、集控運行(xing)(xing)等各(ge)個專業整合在一起，發揮各(ge)自優勢和特長(chang)開展試驗(yan)(yan)。他(ta)們(men)通過分析機組啟動條件，明確了(le)系統(tong)跳、合閘命令邏輯的(de)先后(hou)順序，找到(dao)了(le)控制系統(tong)檢測下滿足各(ge)種工況試驗(yan)(yan)的(de)所有條件。此次試驗(yan)(yan)過程(cheng)中，他(ta)們(men)對勵(li)磁(ci)系統(tong)進(jin)(jin)行(xing)(xing)了(le)假(jia)負載試驗(yan)(yan)、手(shou)動起勵(li)試驗(yan)(yan)、自動起勵(li)試驗(yan)(yan)、階躍(yue)試驗(yan)(yan)等靜態(tai)和動態(tai)試驗(yan)(yan)。試驗(yan)(yan)結(jie)果證明該(gai)廠(chang)勵(li)磁(ci)系統(tong)性能良好(hao)可(ke)靠，為機組的(de)安全(quan)穩定(ding)運行(xing)(xing)提供(gong)了(le)有力保障。