發(fā)電廠電氣系統(tǒng)綜合自動化中英文翻譯

1、外文資料integrated auto mation of power plant electrical systemabstract: electrical systemforpower plantautomation level ofthe relatively backwardstate, the paperanalyzes theelectrical systemin power plantautomation technologyinan integratedfeasibility, necessity, andseveral key issues,proposedthe use o

2、ffield bustechnology, new ideas, and givesspecificimplementation plans. keywords: plant electrical system fieldbuscontrolwire system integrated automation1introductionintegrated automation technology has been applied in power system substations, and decentralized and distributed technology 1 is wide

3、ly used in integrated automationsystem.comparedtothecentralized technology ， this technology has many advantages such as simple and flexible structure, high reliability ,convenient installation and low cost of maintenance. however, integrated automation technology has not been widely used in power p

4、lant electrical system. protective relay and security devices of electrical system run in a self 9-governed state ， which havent formed an integrated electrical automation system. therefore the managing and maintaining level hang behind. latterly more and more power plants, especially those newly co

5、nstructed are interested in the automation of power plant electrical system and its relationship with traditional distributed control system (dcs) .this paper analyzes the actuality of power plant electrical system, brings out a new ideal of application ofmicrocomputer9-basedintegratedautomation tec

6、hnology to power plant electrical system, and gives concrete realization of the program.2the status of power plant electrical system the electrical system discussed in this paper is mainly referred to the protection , measurement ,control and automatic devices of secondary system. main protection de

7、vices include 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 includes high-voltage motor low-voltage system includes auto-low-vol

8、tage intelligent motor protector ,breaker , dc system , etc 2 water system are not included. the characteristics of electrical system 3 operation frequency than thermal microcomputer and large-adopted. mainly on steam9-electrical system.“hardcable”.exchange is limited on account of the cost .impossi

9、ble to accomplish more complex electrical data. aiming at the comparatively laggard level of power plant electrical system automation, this paper analyzes the feasibility, necessity and some key points of the application of integrated automation technology to power plant electrical system. new idea

10、using fieldbus control system technology is presented. this paper also gives the outline and detailedantomatic synchronization system (ass) . 6 kv auxiliary power integrative protection device, auxiliary transformer integrative protection device, feeder protection device, etc. 400 v changeover devic

11、e, intelligent. all these belong to the electrical system. the common systems such as coalhandling system, ash handling system and chemical are that electrical equipments have less control objects; lowersystem devices. electrical devices have high reliability and swift action time. the technology le

12、vel of individual electrical device is high. presently, 16 or 32 bit single-chip scale programmable logic chip are used to build embedded system. technologies of ac sampling and digital signal process are also widely dcs is widely used in power plants, and it fulfills basic operation and control fun

13、ctions. dcs concerns boiler system meanwhile little on traditionally, control and signal exchange between dcs and electrical system is through this connection mode needs manycables, and the cost is high. besides, the information it is electric operation management or achieve deep application of sinc

14、e dcs is the most important system in powerfeasibility analysis of electrical system integrated automationthe improvement of electrical system automation is based on integrated automation and field bus or industrial ethernet technology.microcomputer9-based protection and automation devices are widel

15、y used in power 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 with master system or with each other through field bus.fieldbus techno

16、logy has been widely used in industry and electric power field , and it has been paid moreandmoreattention.thetechnology in 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 b

17、y abb, can originated from automobile industry and lon works brought forward by echelon company. they are all influential fieldbus technology and applied in industry automation area 4 . recently, industrial ethernet network becomes new hotspot.the application of microcomputer-based devices of electr

18、ical system, fieldbus or industrialethernet technology and communication capability provided by dcs system bring powerful support for the integrated automation of power plant electrical system.4real inaction of integrated automation in electrical system electrical system integrated automation is to

19、connect foregoing many protective relay and automation devices by fieldbus and then connect them 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 th

20、e basic control function is accomplished by dcs system using “hard cable”. with the development of technology, the control function can also be fulfilled by communication. therearetwomain problems in building integrated electrical automation system. one is how to build the electrical system network;

21、 the other is how to connect electrical system with dcs. fieldbus standard is the main problem in building the network. due to the protection and automation devices produced by different manufacturers, the physical layer and communication protocol may be different, so the devices cannot be connected

22、 simply. since it is difficult to unify the fieldbus standard, one way to solve this problem is to divide electrical system into several subsystems.according to the electrical system feature, the subsystem can be divided into 6 kv subsystem, 400 v subsystem, generator9- transformer protection subsys

23、tem and avr subsystemetc.each subsystem supports thesame fieldbus standard.for 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 transformer p

24、rotection and avr can have the same or different standards.5conclusionadopting integrated automation of power plant electrical system is the tendency of improving the automation level of power plant , especially improving electric operation management level . it will save the investment and improve

25、the reliability. microcomputer protection , automatic device , mature communication and fieldbus technology are the technical guarantees for integrated automation of electrical system. this paper puts forward two schemes of integrated automation of electrical system. but the modes of connecting with

26、 dcs ,standardoffiledbusandstructureof communication network , are still under research and need more practice.from:yan xianhui.fieldbus technology and application m . beijing : tsinghua university press ,1999. (in chinese)發(fā)電廠電氣系統(tǒng)綜合自動化摘 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)中采用綜合自動化技術的可行性，必要性及幾個關鍵問題，提出

27、了利用現(xiàn)場總線技術的新思路，并給出了具體的實施方案。關鍵字：發(fā)電廠電氣系統(tǒng)，現(xiàn)場總控線制系統(tǒng)，綜合自動化1引言綜合自動化系統(tǒng)已經(jīng)被應用于變電站系統(tǒng)中，并且分散分配技術也被廣泛地用于綜合自動化系統(tǒng)中。與集中的技術相比較這種技術有許多的優(yōu)點，比如：它有簡單和柔韌的結構，高的可靠性，方便的安裝和較低的成本。然而，綜合自動化技術并沒有廣泛的用于發(fā)電廠電氣系統(tǒng)中。電力系統(tǒng)中起保護作用的繼電器和其他安全設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技術的發(fā)電廠電氣系統(tǒng)綜合自動化的理想應用程序，并給出了具體實現(xiàn)方案2發(fā)電廠電氣系統(tǒng)的現(xiàn)狀電氣系統(tǒng)自動化的進步是建立在綜合自動化和現(xiàn)場總線或以太網(wǎng)絡工藝學基礎之上的。以微型計算機為基礎的保護和自動化設備被廣泛地應用在電廠電氣系統(tǒng)中。測量，邏輯判斷，動作記錄和人-機界面的功能都可以由軟件來完成。并且，所有這些設備都具有通信界面，能夠和主系統(tǒng)