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產(chǎn)品簡介
1756-IF8
1756-IF8
產(chǎn)品價格:
上架日期:2019-08-12 16:10:33
產(chǎn)地:美國
發(fā)貨地:福州
供應(yīng)數(shù)量:不限
最少起訂:1個
瀏覽量:517
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詳細說明

    1756-IF8現(xiàn)貨歡迎來電咨詢~??!

    1756-IF8


     2015年9月28日,國神集團神東電力河曲發(fā)電公司2×350兆瓦低熱值煤發(fā)電工程1號機組順利通過168小時滿負荷試運行并正式投入商業(yè)運營中。在項目1號機組進入168小時試運期間,機組負荷率達99.9%,機組運行平穩(wěn),各項指標優(yōu)良,達到山西省超低排放指標。
      該項目是神華集團投產(chǎn)的首臺、世界上投產(chǎn)的第2臺350兆瓦超臨界循環(huán)流化床機組,對循環(huán)流化床技術(shù)的可持續(xù)發(fā)展具有里程碑意義。
      工程概況
      該項目屬山西省重點建設(shè)項目,以資源綜合利用、發(fā)展循環(huán)經(jīng)濟為標志,充分利用當(dāng)?shù)孛喉肥⒚耗嗟鹊蜔嶂得杭俺鞘兄兴?,具有?jié)能、節(jié)水、環(huán)保等特點。該項目DCS系統(tǒng)包括兩臺主機、公用、輔網(wǎng),實現(xiàn)全廠一體化控制。
    單元機組和公用系統(tǒng)I/O點:
      總計點數(shù):6945*2+970=14860點(兩臺機組及公用點數(shù))
      系統(tǒng)配置
      神華神東河曲工程包括#1機組和#2機組,其分散控制系統(tǒng)的控制范圍包括單元機組、機組脫硫系統(tǒng)、輔網(wǎng)系統(tǒng)和公用系統(tǒng)。整個DCS系統(tǒng)按照HOLLiAS MACS的網(wǎng)絡(luò)結(jié)構(gòu)劃分為#1機組、#2機組脫硫以及公用系統(tǒng)共四個域,并且與電廠管理信息系統(tǒng)(MIS)、監(jiān)控信息系統(tǒng)(SIS)等留有通訊接口。
      和利時控制系統(tǒng)具有模擬量控制(MCS)、順序控制(SCS)、鍋爐安全監(jiān)視保護(FSSS)、電氣控制(ECS)、數(shù)據(jù)采集(DAS)、汽機旁路控制(BPC)等系統(tǒng)功能,以滿足各種運行工況的要求,確保機組安全、高效運行。
      DCS控制系統(tǒng)硬件配置示意圖(單元機組和公用系統(tǒng))如下:
     DCS網(wǎng)絡(luò)結(jié)構(gòu)
      HOLLiAS MACS分散控制系統(tǒng),可以劃分為監(jiān)控層和控制層兩個層次。監(jiān)控層的設(shè)備主要包括工程師站、操作員站、通訊站等;控制層的設(shè)備主要包括實現(xiàn)各種控制功能的控制站(包括遠程控制站和遠程I/O站)。工程師站、操作員站和通訊站等與系統(tǒng)服務(wù)器的互連,通過監(jiān)控網(wǎng)(M-NET)使用以太網(wǎng)協(xié)議通訊,通訊速率100Mbps??刂普九c系統(tǒng)服務(wù)器的互連,通過系統(tǒng)網(wǎng)(S-NET)使用HSIE網(wǎng)絡(luò)協(xié)議,通訊速率10/100M自適應(yīng)。HSIE網(wǎng)絡(luò)協(xié)議基于可靠的工業(yè)以太網(wǎng)通訊協(xié)議,信息傳輸實時、可靠。控制站內(nèi)部的數(shù)據(jù)通訊網(wǎng)絡(luò)稱為控制網(wǎng)(C-NET),控制網(wǎng)采用Profibus現(xiàn)場總線。使用Profibus-DP協(xié)議,通訊速率500Kbps,實現(xiàn)控制器與過程I/O模塊的通訊,符合IEC61158國際標準。所有支持Profibus-DP協(xié)議的控制器(如PLC)和智能儀表只要提供相應(yīng)的GSD設(shè)備文件,都能作為主控的從站與HOLLIAS MACS系統(tǒng)進行通訊。

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