文章來源：鞍(an)鋼集團公(gong)司 發布時(shi)間：2018-05-02
日前(qian)，從鞍山鋼鐵(tie)第二發電廠獲(huo)悉，在最(zui)近一(yi)次CCPP機組大修中，該(gai)廠通過(guo)自主攻關(guan)，首次完成(cheng)以該(gai)廠為主、外(wai)方技(ji)術服務為輔(fu)的勵(li)磁系統(tong)靜態和動態試驗，解決了CCPP機組長期勵(li)磁系統(tong)試驗困難的問題，并填補該(gai)廠勵(li)磁系統(tong)試驗的部(bu)分空白。
CCPP發電機(ji)(ji)組(zu)主要(yao)依(yi)靠電磁(ci)感應產(chan)生電流，勵磁(ci)系(xi)統(tong)(tong)作為提供勵磁(ci)電流的重要(yao)系(xi)統(tong)(tong)，工作狀態(tai)(tai)直(zhi)接影響發電水平。根據電力系(xi)統(tong)(tong)相關規(gui)程規(gui)定，機(ji)(ji)組(zu)勵磁(ci)系(xi)統(tong)(tong)試(shi)(shi)驗應配(pei)(pei)合機(ji)(ji)組(zu)大修進行。由于該廠(chang)(chang)CCPP機(ji)(ji)組(zu)是從國外(wai)引進的電機(ji)(ji)產(chan)品(pin)，與之配(pei)(pei)套的勵磁(ci)系(xi)統(tong)(tong)也為外(wai)方配(pei)(pei)套產(chan)品(pin)，系(xi)統(tong)(tong)試(shi)(shi)驗對機(ji)(ji)組(zu)各(ge)工況要(yao)求條(tiao)件都非常(chang)嚴(yan)格且繁瑣，在(zai)機(ji)(ji)組(zu)投產(chan)后(hou)的歷次大修中(zhong)該廠(chang)(chang)多(duo)次嘗試(shi)(shi)對勵磁(ci)系(xi)統(tong)(tong)進行靜態(tai)(tai)和動態(tai)(tai)試(shi)(shi)驗，但(dan)僅(jin)能完成部(bu)分項目。
今(jin)年(nian)(nian)年(nian)(nian)初(chu)，該(gai)廠(chang)(chang)CCPP機組進(jin)行(xing)大修，電(dian)氣繼電(dian)保護專業組織技術骨干成立攻關(guan)小組繼續(xu)嘗(chang)試(shi)(shi)對勵磁(ci)系(xi)統進(jin)行(xing)試(shi)(shi)驗(yan)(yan)(yan)(yan)。通過總結以往(wang)試(shi)(shi)驗(yan)(yan)(yan)(yan)經驗(yan)(yan)(yan)(yan)，全面梳理電(dian)氣圖紙后，他們將(jiang)電(dian)氣、熱工、集控(kong)運行(xing)等各個專業整合(he)在(zai)一起，發揮各自優勢和特(te)長(chang)開展試(shi)(shi)驗(yan)(yan)(yan)(yan)。他們通過分(fen)析機組啟動條件(jian)，明確了(le)系(xi)統跳、合(he)閘命令邏輯的先后順序，找到(dao)了(le)控(kong)制(zhi)系(xi)統檢測下滿足各種(zhong)工況試(shi)(shi)驗(yan)(yan)(yan)(yan)的所有條件(jian)。此(ci)次試(shi)(shi)驗(yan)(yan)(yan)(yan)過程中，他們對勵磁(ci)系(xi)統進(jin)行(xing)了(le)假(jia)負(fu)載(zai)試(shi)(shi)驗(yan)(yan)(yan)(yan)、手動起勵試(shi)(shi)驗(yan)(yan)(yan)(yan)、自動起勵試(shi)(shi)驗(yan)(yan)(yan)(yan)、階(jie)躍試(shi)(shi)驗(yan)(yan)(yan)(yan)等靜態和動態試(shi)(shi)驗(yan)(yan)(yan)(yan)。試(shi)(shi)驗(yan)(yan)(yan)(yan)結果證明該(gai)廠(chang)(chang)勵磁(ci)系(xi)統性能良好可靠，為機組的安全穩定運行(xing)提供了(le)有力保障。