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          1756-IF8

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          產(chǎn)品價格: /人民幣 
          最后更新: 2019-08-12 16:10:33
          產(chǎn)品產(chǎn)地: 美國
          發(fā)貨地: 福州 (發(fā)貨期:當(dāng)天內(nèi)發(fā)貨)
          供應(yīng)數(shù)量: 不限
          有效期: 長期有效
          最少起訂: 1
          瀏覽次數(shù): 528
          詢價  家家通會員產(chǎn)品
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          1756-IF8現(xiàn)貨歡迎來電咨詢~!!

          1756-IF8


           2015年9月28日,國神集團(tuán)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(jī)組順利通過168小時滿負(fù)荷試運行并正式投入商業(yè)運營中。在項目1號機(jī)組進(jìn)入168小時試運期間,機(jī)組負(fù)荷率達(dá)99.9%,機(jī)組運行平穩(wěn),各項指標(biāo)優(yōu)良,達(dá)到山西省超低排放指標(biāo)。
            該項目是神華集團(tuán)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(jī)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(jì)為標(biāo)志,充分利用當(dāng)?shù)孛喉肥⒚耗嗟鹊蜔嶂得杭俺鞘兄兴哂泄?jié)能、節(jié)水、環(huán)保等特點。該項目DCS系統(tǒng)包括兩臺主機(jī)、公用、輔網(wǎng),實現(xiàn)全廠一體化控制。
          單元機(jī)組和公用系統(tǒng)I/O點:
            總計點數(shù):6945*2+970=14860點(兩臺機(jī)組及公用點數(shù))
            系統(tǒng)配置
            神華神東河曲工程包括#1機(jī)組和#2機(jī)組,其分散控制系統(tǒng)的控制范圍包括單元機(jī)組、機(jī)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(jī)組、#2機(jī)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(hù)(FSSS)、電氣控制(ECS)、數(shù)據(jù)采集(DAS)、汽機(jī)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(jī)組安全、高效運行。
            DCS控制系統(tǒng)硬件配置示意圖(單元機(jī)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(yuǎn)程控制站和遠(yuǎn)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。控制站與系統(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(biāo)準(zhǔn)。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(jìn)行通訊。

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