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            6EP1931-2EC31
            發布者:工控備件  發布時間:2019-08-20 14:03:42  訪問次數:162

            6EP1931-2EC31現貨 in stock! 歡迎來電咨詢~!

            6EP1931-2EC31


             2015年9月28日,國神集團神東電力河曲發電公司2×350兆瓦低熱值煤發電工程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,各項指標優良,達到山西省超低排放指標。
              該項目是神華集團投產的首臺、世界上投產的第2臺350兆瓦超臨界循環流化床機組,對循環流化床技術的可持續發展具有里程碑意義。
              工程概況
              該項目屬山西省重點建設項目,以資源綜合利用、發展循環經濟為標志,充分利用當地煤矸石、煤泥等低熱值煤及城市中水,具有節能、節水、環保等特點。該項目DCS系統包括兩臺主機、公用、輔網,實現全廠一體化控制。
            單元機組和公用系統I/O點:
              總計點數:6945*2+970=14860點(兩臺機組及公用點數)
              系統配置
              神華神東河曲工程包括#1機組和#2機組,其分散控制系統的控制范圍包括單元機組、機組脫硫系統、輔網系統和公用系統。整個DCS系統按照HOLLiAS MACS的網絡結構劃分為#1機組、#2機組脫硫以及公用系統共四個域,并且與電廠管理信息系統(MIS)、監控信息系統(SIS)等留有通訊接口。
              和利時控制系統具有模擬量控制(MCS)、順序控制(SCS)、鍋爐安全監視保護(FSSS)、電氣控制(ECS)、數據采集(DAS)、汽機旁路控制(BPC)等系統功能,以滿足各種運行工況的要求,確保機組安全、高效運行。
              DCS控制系統硬件配置示意圖(單元機組和公用系統)如下:
             DCS網絡結構
              HOLLiAS MACS分散控制系統,可以劃分為監控層和控制層兩個層次。監控層的設備主要包括工程師站、操作員站、通訊站等;控制層的設備主要包括實現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服務器的互連,通過監控網(M-NET)使用以太網協議通訊,通訊速率100Mbps。控制站與系統服務器的互連,通過系統網(S-NET)使用HSIE網絡協議,通訊速率10/100M自適應。HSIE網絡協議基于可靠的工業以太網通訊協議,信息傳輸實時、可靠?刂普緝炔康臄祿ㄓ嵕W絡稱為控制網(C-NET),控制網采用Profibus現場總線。使用Profibus-DP協議,通訊速率500Kbps,實現控制器與過程I/O模塊的通訊,符合IEC61158國際標準。所有支持Profibus-DP協議的控制器(如PLC)和智能儀表只要提供相應的GSD設備文件,都能作為主控的從站與HOLLIAS MACS系統進行通訊。

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