6FC5247-0AA36-0AA1

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描述

6FC5247-0AA36-0AA1? ?二手
分析了電氣系統(tǒng)控制的特點，結(jié)合實際工程的應(yīng)用情況介紹了電氣系統(tǒng)納入DCS監(jiān)控的范圍和控制要求，并就有關(guān)DCS硬件配置、軟件功能、公用系統(tǒng)控制等問題進行了有益的探討，為以后同類工程提供借鑒。
300MW及以上容量機組的熱工控制已全面采用DCS控制系統(tǒng)，逐步形成了數(shù)據(jù)采集(DAS)、模擬量控制(MCS)、順序控制(SCS)、燃燒器管理(BMS)四大系統(tǒng)。從實際運行情況來看，DCS較好地實現(xiàn)了其控制功能，并發(fā)揮了安全經(jīng)濟、使用可靠的優(yōu)點，取得了良好的效果，而電氣控制仍然采用較常規(guī)的控制手段，使用盤臺上一對一硬手操方式。隨著計算機的快速發(fā)展和控制技術(shù)的不斷提高，使得機爐控制與電氣控制日益顯得不協(xié)調(diào)，控制水平也逐漸拉大。為了解決這一矛盾，有效的辦法就是將電氣納入DCS控制之中，這樣既利用DCS已成熟的分散控制技術(shù)，又能提高電氣控制水平。電氣控制納入DCS以后，可充分利用DCS的手段，使電氣防誤操作等功能實現(xiàn)更方便、更完備，并且將相關(guān)量的顯示報警與電氣設(shè)備的控制調(diào)節(jié)有機地結(jié)合起來，有效提高整個電氣控制的安全性和可靠性。
1997年7月原電力部召開了熱工自動化領(lǐng)導(dǎo)小組第六次擴大會，對電氣設(shè)計如何與DCS配合提出了具體意見：“實現(xiàn)爐、機、電集中管理，使電廠主控室爐、機、電控制水平協(xié)調(diào)發(fā)展是必要的而且在現(xiàn)有技術(shù)和裝備條件下是可行的，可以起到省人、省主控制室面積，便于集控值班運行的作用，而且不提高造價。領(lǐng)導(dǎo)小組要求以積極的態(tài)度加入電氣納入DCS的工程試點?！卑创司?，九江電廠三期2×350MW、信陽電廠一期2×300MW、益陽電廠一期2×300MW工程電氣系統(tǒng)均納入DCS監(jiān)控。現(xiàn)依據(jù)這幾個工程中具體實施的過程和要求，就電氣系統(tǒng)納入DCS監(jiān)控的一些有關(guān)問題進行分析和探討。

產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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Enlarge
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選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當天順豐發(fā)貨！
主營：本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”（不管能不能看懂，先了解個大概，以便學(xué)習(xí)編程時查找）；
2、由位控邏輯入手，逐漸增加定時、計數(shù)等條件，把或、與、非關(guān)系理順；
3、進而練習(xí)整數(shù)運算、實數(shù)運算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個物理回路驗證，比如變頻器+電機+測速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會一種至于其它的學(xué)習(xí)起來也就簡單了。

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