Distributed control system in thermal application of automatic control (foreign language translation)
Abstract: the distributed control system (DCS) is a computer technology and automation technology combined with the results of the development. Combining with the new Shanghai new furnace thermal three two machine adopts distributed control system (DCS) to implement the automatic control engineering practice, this paper introduces the DCS system characteristic and the function, and according to the operation condition of DCS system, and combining with actual maintenance on this simple.



Keywords: DCS system maintenance thermal control



A, hardware maintenance

1. The process channel. The I/O modules of judgment and processing general fault diagnosis system is through the use of the module, change method to deal with. As for the internal components aging internal factors such as the module is not normal, caused by general ther……
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摘要：分散控制系統(tǒng)(DCS) 是計(jì)算機(jī)技術(shù)和自動(dòng)化技術(shù)相結(jié)合發(fā)展的結(jié)果。本文結(jié)合新滬熱電廠新建三爐兩機(jī)采用分散控制系統(tǒng)(DCS) 實(shí)現(xiàn)自動(dòng)控制的工程實(shí)踐, 介紹DCS 系統(tǒng)特點(diǎn)和功能, 并根據(jù)DCS 系統(tǒng)的運(yùn)行情況,結(jié)合實(shí)際維護(hù)進(jìn)行簡(jiǎn)單闡述。

關(guān)鍵詞：DCS 系統(tǒng) 日常維護(hù) 熱工控制
　　
　　一、硬件維護(hù)
　　1.過程通道。I /O 模塊故障的一般判斷與處理是通過系統(tǒng)診斷, 用更換模塊的方法處理。至于其內(nèi)部元件老化等內(nèi)部因素造成的模塊不正常, 一般熱控人員不好判斷。原則上I /O模塊的檢修應(yīng)由廠家處理,目前我廠的熱工檢修人員的技術(shù)水平還達(dá)不到這種水平, 不能象檢修常規(guī)儀表那樣得心應(yīng)手。并且現(xiàn)在的儀表廠家的技術(shù)保密也不容許客戶知道他們的核心技術(shù), I /O 模塊基本趨于一體化設(shè)計(jì), 因此I /O 模塊的備件一定要充足。具了解這種I /O模塊的故障大多出現(xiàn)在調(diào)試和運(yùn)行初期, 其原因有設(shè)備本身質(zhì)量不過關(guān), 也有維護(hù)人員素質(zhì)差等。一般經(jīng)過一個(gè)大修周期后會(huì)穩(wěn)定下來。
　　2.就地設(shè)備。就地設(shè)備故障的診斷與處理同常規(guī)的故障沒有區(qū)別, 只是一次元件或控制設(shè)備出現(xiàn)故障時(shí)不能被操作員及時(shí)發(fā)現(xiàn), 這并不一定是運(yùn)行人員不認(rèn)真, 主要是因?yàn)楫嬅孑^多不能全部顯示。只有異?；驁?bào)警后才能發(fā)現(xiàn)?！?br /> ……