免费菠萝视频app下载

　　近日，由國(guo)(guo)家(jia)(jia)電(dian)(dian)(dian)(dian)網公司(si)所屬(shu)國(guo)(guo)網電(dian)(dian)(dian)(dian)力(li)科(ke)學研究院研制(zhi)的(de)(de)我國(guo)(guo)首(shou)套具(ju)有完全自主知識(shi)產權的(de)(de)700兆瓦級巨型(xing)(xing)水輪發(fa)電(dian)(dian)(dian)(dian)機組(zu)(zu)(zu)勵磁系(xi)統(tong)在(zai)三(san)峽地(di)下(xia)電(dian)(dian)(dian)(dian)站(zhan)32號機組(zu)(zu)(zu)成(cheng)功投運(yun)。該(gai)項目(mu)打破了長期以(yi)來國(guo)(guo)外企業的(de)(de)技(ji)術壟斷，是繼(ji)實現700兆瓦級水電(dian)(dian)(dian)(dian)機組(zu)(zu)(zu)調(diao)速系(xi)統(tong)國(guo)(guo)產化(hua)后，在(zai)巨型(xing)(xing)水電(dian)(dian)(dian)(dian)機組(zu)(zu)(zu)領(ling)域取得(de)的(de)(de)又一(yi)重(zhong)(zhong)大突破，至此，國(guo)(guo)家(jia)(jia)電(dian)(dian)(dian)(dian)網已(yi)全面(mian)掌握了巨型(xing)(xing)水電(dian)(dian)(dian)(dian)機組(zu)(zu)(zu)的(de)(de)核心控制(zhi)技(ji)術，為(wei)促進(jin)(jin)我國(guo)(guo)水電(dian)(dian)(dian)(dian)事業健康發(fa)展，進(jin)(jin)一(yi)步提(ti)升我國(guo)(guo)水電(dian)(dian)(dian)(dian)裝(zhuang)備(bei)(bei)制(zhi)造技(ji)術的(de)(de)國(guo)(guo)際影響力(li)，推動(dong)國(guo)(guo)產電(dian)(dian)(dian)(dian)氣裝(zhuang)備(bei)(bei)走向國(guo)(guo)際市場提(ti)供了重(zhong)(zhong)要(yao)技(ji)術支(zhi)撐。該(gai)系(xi)統(tong)的(de)(de)研制(zhi)成(cheng)功，已(yi)迫(po)使進(jin)(jin)口(kou)同類設備(bei)(bei)平均價格下(xia)降(jiang)近50%，經濟效益十分顯著。

　　發(fa)(fa)(fa)電機(ji)(ji)勵磁(ci)系統(tong)(tong)(tong)是發(fa)(fa)(fa)電機(ji)(ji)的(de)(de)(de)(de)核心(xin)控制(zhi)部分，為發(fa)(fa)(fa)電機(ji)(ji)轉子(zi)提(ti)供穩定磁(ci)場，具有維持機(ji)(ji)端電壓水平和調節發(fa)(fa)(fa)電機(ji)(ji)無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率的(de)(de)(de)(de)重要功(gong)(gong)(gong)能(neng)，巨型水電機(ji)(ji)組(zu)勵磁(ci)系統(tong)(tong)(tong)控制(zhi)機(ji)(ji)理復雜，其安(an)全可靠性對發(fa)(fa)(fa)電機(ji)(ji)組(zu)安(an)全運(yun)(yun)行(xing)和電網(wang)(wang)安(an)全穩定影(ying)響(xiang)極大。此前(qian)我(wo)國已(yi)投(tou)運(yun)(yun)的(de)(de)(de)(de)三峽、小(xiao)灣、龍灘、官地、拉西瓦等電站40余臺700兆(zhao)瓦級水輪(lun)發(fa)(fa)(fa)電機(ji)(ji)組(zu)勵磁(ci)系統(tong)(tong)(tong)設備完全依賴(lai)進(jin)(jin)口，其核心(xin)控制(zhi)技術均掌握在國外企業手中，對我(wo)國水電事業的(de)(de)(de)(de)健康發(fa)(fa)(fa)展十分不利。國網(wang)(wang)電科院研制(zhi)成功(gong)(gong)(gong)的(de)(de)(de)(de)巨型水輪(lun)發(fa)(fa)(fa)電機(ji)(ji)組(zu)勵磁(ci)系統(tong)(tong)(tong)具有完全自主知識(shi)產(chan)權，總體技術水平達到(dao)國際先進(jin)(jin)，具有極強的(de)(de)(de)(de)市場競爭(zheng)力，已(yi)迫使進(jin)(jin)口同類設備平均價格下降(jiang)近(jin)50%，按照(zhao)國家(jia)“十二五”水電發(fa)(fa)(fa)展規(gui)模初步(bu)測算，可為國家(jia)節省投(tou)資約2億元，同時降(jiang)低了水電站運(yun)(yun)行(xing)維護(hu)成本，經濟效益十分顯著。