外文翻譯---發(fā)電廠電氣系統(tǒng)綜合自動化

1、<p><b>　　外文資料</b></p><p>　　Integrated Auto mation of Power Plant Electrical System</p><p>　　Abstract: Electrical system for power plant automation level of t

2、he relatively backward state, the paper analyzes the electrical system in power plant automation technology in an integrated feasibility, necessity, and several key issues,

3、60;proposed the use of field bus technology, new ideas, and gives Specific implementation plans. </p><p>　　Keywords: Plant electrical system Fieldbus control wire system

4、</p><p>　　Integrated Automation</p><p>　　1　Introduction</p><p>　　Integrated automation technology has been applied in power system substations, and decentralized and distributed tec

5、hnology [1] is widely used in integrated automationsystem.Comparedtothecentralized technology ， this technology has many advantages such as simple and flexible structure, high reliability ,convenient installation and low

6、 cost of maintenance. However, integrated automation technology has not been widely used in power plant electrical system. Protective relay and security devices of </p><p>　　2　The status of power plant elect

7、rical system </p><p>　　The electrical system discussed in this paper is mainly referred to the protection , measurement ,control and automatic devices of secondary system. Main protection devices include

8、generator protection, main transformer protection and start up/stand by transformer protection. Automatic devices include automatic regulator voltage (AVR),automatic transfer switch(ATS) ,faultkymograp hand protection in

9、cludes high-voltage motor low-voltage system includes auto-low-voltage intelligent motor protector </p><p>　?。矲easibility Analysis of Electrical System Integrated Automation</p><p>　　The improve

10、ment of electrical system automation is based on integrated automation and field bus or industrial Ethernet technology.</p><p>　　Microcomputer9-based protection and automation devices are widely used in powe

11、r plant electrical system. The measure, logic judge, action, record and man9- machine interface function canbedoneby software. Moreover, all these devices have communication interface, they can exchange information wi

12、th master system or with each other through field bus.</p><p>　　Fieldbus technology has been widely used in industry and electric power field , and it has been paid moreandmoreattention.Thetechnology i

13、n communication rate , communication distance and anti jamming capability has been improved. Many sorts of standards have been formed, such as Profibus advocated by Siemens, FF by ABB, CAN originated from automobile indu

14、stry and Lon works brought forward by Echelon company. They are all influential fieldbus technology and applied in industry automation ar</p><p>　　The application of microcomputer-based devices of electrical

15、 system, fieldbus or industrialEthernet technology and communication capability provided by DCS system bring powerful support for the integrated automation of power plant electrical system.</p><p>　　4　Real

16、inaction of Integrated Automation in Electrical System </p><p>　　Electrical system integrated automation is to connect foregoing many protective relay and automation devices by fieldbus and then connect them

17、 to DCS system and (possible) electrical workstation through communication devices. The electrical workstation implements all the electrical application such as monitoring and maintenance function, and the basic Cont

18、rol function is accomplished by DCS system using “hard cable”. With the development of technology, the control function can also be fulfil</p><p>　　etc.Each subsystem supports thesame fieldbus standard.Fo

19、r example, feeder protection, motor protection, transformer protection on 6 kV bus must support one kind of standard. Protections of 400 V System or intelligent circuit breaker use the same standard. Generator transforme

20、r protection and AVR can have the same or different standards.</p><p>　　5　Conclusion</p><p>　　Adopting integrated automation of power plant electrical system is the tendency of improving the aut

21、omation level of power plant , especially improving electric operation management level . It will save the investment and improve the reliability. Microcomputer protection , automatic device , mature communication and fi

22、eldbus technology are the technical guarantees for integrated automation of electrical system. This paper puts forward two schemes of integrated automation of electrical system. Bu</p><p>　　From:Yan Xianhui.

23、Fieldbus technology and application [ M ] . Bei</p><p>　　jing : Tsinghua University Press ,1999. (in Chinese)</p><p>　　發(fā)電廠電氣系統(tǒng)綜合自動化</p><p>　　摘 要：針對電廠電氣系統(tǒng)自動化水平相對落后的狀態(tài)，本文分析了在電廠電氣系統(tǒng)中

24、采用綜合自動化技術(shù)的可行性，必要性及幾個關(guān)鍵問題，提出了利用現(xiàn)場總線技術(shù)的新思路，并給出了具體的實施方案。</p><p>　　關(guān)鍵字：發(fā)電廠電氣系統(tǒng)，現(xiàn)場總控線制系統(tǒng)，綜合自動化</p><p><b>　　1　引言</b></p><p>　　綜合自動化系統(tǒng)已經(jīng)被應(yīng)用于變電站系統(tǒng)中，并且分散分配技術(shù)也被廣泛地用于綜合自動化系統(tǒng)中。與集中的技

25、術(shù)相比較這種技術(shù)有許多的優(yōu)點，比如：它有簡單和柔韌的結(jié)構(gòu)，高的可靠性，方便的安裝和較低的成本。</p><p>　　然而，綜合自動化技術(shù)并沒有廣泛的用于發(fā)電廠電氣系統(tǒng)中。電力系統(tǒng)中起</p><p>　　保護(hù)作用的繼電器和其他安全設(shè)備處于半自動運行狀態(tài)，并沒有實現(xiàn)綜合自動化。因此，管理和維持高水平的工作就落后了。后來，越來越多的電廠特別是那些新建的電廠熱忠于電氣綜合自動化系統(tǒng)而不是傳統(tǒng)的集

26、散控制系統(tǒng)。這篇論文分析的是發(fā)電廠電氣系統(tǒng)的現(xiàn)狀以及提出了基于微型計算機(jī)技術(shù)的發(fā)電廠電氣系統(tǒng)綜合自動化的理想應(yīng)用程序，并給出了具體實現(xiàn)方案</p><p>　　2　發(fā)電廠電氣系統(tǒng)的現(xiàn)狀</p><p>　　電氣系統(tǒng)自動化的進(jìn)步是建立在綜合自動化和現(xiàn)場總線或以太網(wǎng)絡(luò)工藝學(xué)基礎(chǔ)之上的。</p><p>　　以微型計算機(jī)為基礎(chǔ)的保護(hù)和自動化設(shè)備被廣泛地應(yīng)用在電廠電氣系統(tǒng)中

27、。測量，邏輯判斷，動作記錄和人-機(jī)界面的功能都可以由軟件來完成。并且，所有這些設(shè)備都具有通信界面，能夠和主系統(tǒng)或其他系統(tǒng)之間通過現(xiàn)場總線進(jìn)行信息交換。</p><p>　　現(xiàn)場總線控制技術(shù)目前已被廣泛用于工業(yè)和電力系統(tǒng)中，并且這項技術(shù)越來越受到重視?，F(xiàn)場總線控制系統(tǒng)的通信速率，通信距離，抗干擾能力都有了極大的改善。其許多標(biāo)準(zhǔn)也被制定，如西門子公司的Profibus和ABB公司的FF標(biāo)準(zhǔn)等。這些標(biāo)準(zhǔn)都是很有影響的現(xiàn)

28、場總線技術(shù)，而且在工業(yè)自動化領(lǐng)域有廣泛的應(yīng)用?，F(xiàn)如今工業(yè)以太網(wǎng)絡(luò)變成了新的熱點。</p><p>　　以微型計算機(jī)為基礎(chǔ)的電氣系統(tǒng)，現(xiàn)場總線系統(tǒng)或者以太網(wǎng)絡(luò)技術(shù)的應(yīng)用程序和通信功能由給發(fā)電廠綜合自動化提供支持的集散控制系統(tǒng)提供。</p><p>　　3　電力系統(tǒng)綜合自動化可行性分析</p><p>　　電力系統(tǒng)的綜合自動化先要通過現(xiàn)場總線將用于保護(hù)的繼電器和自動裝置

29、連接起來，然后把他們連接到集散控制系統(tǒng)再通過通信設(shè)備與可能的電站相連。電站執(zhí)行一個比如測量或者維護(hù)的程序時，這種基本的操作功能由集散控制系統(tǒng)來完成。隨著技術(shù)的發(fā)展，這些控制功能也可以由通訊手段來實現(xiàn)。</p><p>　　建立電力系統(tǒng)綜合自動化有兩個主要的問題，一是如何建立電力系統(tǒng)的網(wǎng)絡(luò)，另一個是如何使電力系統(tǒng)與集散控制系統(tǒng)相連。</p><p>　　現(xiàn)場總線標(biāo)準(zhǔn)是建立網(wǎng)絡(luò)的主要問題。由于

30、保護(hù)和自動裝置由不同的廠家生產(chǎn)，所以其物理上的層和通信協(xié)議可能會有所差異，這樣就使得設(shè)備之間不可能被簡單的聯(lián)系起來。</p><p>　　因為要統(tǒng)一現(xiàn)場總線系統(tǒng)很困難，解決這一問題的一個方法是把電力系統(tǒng)分割成一些子系統(tǒng)。根據(jù)電力系統(tǒng)的功能這些子系統(tǒng)被分為6千伏子系統(tǒng)，400伏子系統(tǒng)，變壓器保護(hù)子系統(tǒng)和AVR子系統(tǒng)等等。每一個子系統(tǒng)支持一種相同的現(xiàn)場總線標(biāo)準(zhǔn)。舉例來說，線路保護(hù)、電動機(jī)保護(hù)、變壓器保護(hù)在6千伏電壓等

31、級上必須支持同一個標(biāo)準(zhǔn)。400伏系統(tǒng)的保護(hù)或者智能斷路器要用同一種標(biāo)準(zhǔn)。發(fā)電機(jī)變壓器保護(hù)和AVR應(yīng)該用同一標(biāo)準(zhǔn)。這些子系統(tǒng)可以單獨地和集散控制系統(tǒng)相連，或者在連接了一種特別的通信控制器之后再與集散控制系統(tǒng)相連。</p><p><b>　　4　總　結(jié)</b></p><p>　　采用電力系統(tǒng)綜合自動化是提高電廠自動化水平的趨勢，特別是改善電廠的管理水平。這將減少投資提