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            TSX3710128DTK1
            發布者:工控備件  發布時間:2019-08-25 10:56:31  訪問次數:109

            TSX3710128DTK1現貨 in stock! 歡迎來電咨詢~。

            TSX3710128DTK1


             大唐南京電廠建設規模是2臺660MW超超臨界燃煤發電機組。按照大唐集團公司的精神和設計原則:第一要采用新技術,來提高自動化水平,第二要降低電廠的建設投資成本,第三在運行之后,要進行運行方式的改革,以實現減員增效。按照這樣一個原則,在輔助車間的技術方案選型上,打破了常規方案的局限,選用了集中控制方案;在硬件平臺的選擇上,將PLC和DCS放在一起進行比較,最終經過招投標選擇了性價比更好,更加適合集中控制應用要求的科遠NT6000分散控制系統。同時在部分系統中,采用了現場總線技術,為現場總線技術在火電廠的應用,進行了有益的嘗試。
              1、控制系統配置
              大唐南京電廠全廠輔助系統(車間)集中控制系統的控制范圍包括:綜合泵房、凈水系統、鍋爐補給水系統、兩臺機組的凝結水精處理及再生設備,化學取樣加藥系統、機組排水槽、脫硝氨區、工業和脫硫廢水處理、生活污水處理、煤泥水處理、暖通、輸煤、除灰系統、除渣、電除塵和脫硫等工藝系統。按照工藝系統,控制系統分成水務控制系統、灰煤渣控制系統、脫硫控制系統;其中水務控制系統監控點設在主控室內,灰煤渣控制系統、脫硫控系統監控點設在輔控綜合樓,每個監控站均為全功能站,能夠監控和操作全廠輔網設備狀態,同時通過權限設置不同的用戶,區別監視和操作輸煤、除灰、脫硫等工藝系統設備,構建了一個全廠輔助車間集中控制系統。
              1.1、監控點配置
              本工程設置2個值班監控點和3個后備監控點。值班監控點在正常運行時完成對輔助車間各系統的監控;后備監控點作為調試、試運行、檢修時的后備操作點,按無人值班考慮。一個值班監控點設在單元機組集控室內, 配置4 套輔助車間控制系統操作員站,監控對象為水務控制系統;另一個監控值班點設在輔控綜合樓,配置6 套輔助車間控制系統操作員站,監控對象為脫硫、輸煤、除灰渣系統。輔控綜合樓工程師站有脫硫工程師站1 套,輔網工程師站1 套、SIS 接口裝置1 臺,歷史數據服務器1 套。3個后備監控點按無人值班考慮,分別為化學水處理2個后備監控點、凝結水1個后備監控點。后備監控點用于調試、檢修及試運行期間的操作,具備針對本系統的獨立監控能力與組態調試能力。
              1.2、控制器與I/O 配置
              整套控制系統配置25對冗余控制器,IO點配置規模為13000點左右。
              (1)水務控制系統配置
              綜合泵房、凈水處理配置1對控制器;
              反滲透、化學除鹽、再生系統及化學電源系統配置2 對控制器;
              每臺機組的凝結水精處理及汽水取樣配置2 對控制器;
              凝結水精處理再生配置1對控制器;
              暖通系統配置2對控制器;
              工業廢水處理及脫硫廢水配置2對控制器。
              在廢水系統中采用了profibus現場總線技術,每條總線上分別有DP、PA設備組成,DP總線包含的設備有:馬達控制器、電磁閥導、電動門執行機構等; PA總線包含的設備有:液位計、壓力變送器、流量等。替代了傳統IO點300點,F場總線方案與常規系統相比,減少了常規IO模件的使用,減少大量電纜及電纜敷設工作,能夠獲取總線設備的大量現場信息,降低了工程造價,縮短了施工和調試時間,系統可靠性高,診斷信息豐富,便于后期維護。
              (2)灰煤渣控制系統配置
              輸煤綜合樓、轉運站、雨水泵配置2對控制器;
              輸煤碼頭、煤倉、煤場配置3對控制器;

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            Adjustable Frequency Controller 200hp 248amp max

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