電氣類(lèi)外文翻譯---- 110kv供電系統(tǒng)繼電保護(hù)作用淺析

1、<p><b>　　附錄：</b></p><p>　　110Kv power supply system relay protection function brief analysis</p><p>　　Not only the 110Kv power supply system relay protection function brief anal

2、ysis electrical power system security and the reliability relate electrical power system itself the movement, similarly relates in the power transmission scope the factories and mines, the enterprise, whether the inhabit

3、ant uses electricity normally.Because simultaneously the electrical power system has the strong connectivity, electrical power system interior any barrier all possibly affects the overall system normal ope</p><

4、;p>　　First, the 11OKV power supply system</p><p>　　Generally speaking electrical power system including the electricity generation, changes the electricity, the electric transmission, the power distributi

5、on and uses electricity and so on five links, between five links restricted mutually, cooperates mutually has facilitated the electrical power system stability together.But in fact, because these five links not always in

6、 the identical place, the identical time complete, the electric transmission must surmount the vast area, simultaneously the el</p><p>　　Second, the relay protection digs reads and the related principle <

7、/p><p>　　Electrical power system rapid development to the relay protection to propose unceasingly the new request, the electronic technology, the computer technology and the communication rapid development unce

8、asingly has poured into the new vigor for the relay protection technology development. </p><p>　　The relay protection is refers when in the electrical power system electric power part (for example generator,

9、 line and so on) or electrical power system itself has occurred the breakdown endangers the electrical power system safe operation, can to the attendant promptly send out the warning signal, or directly to the circuit br

10、eaker which controls sends out the trip order to terminate one kind of automated protection which these events develop, the relay protection equipment can monitor the ele</p><p>　　The relay protection princi

11、ple of work mainly has used in the electrical power system the part has when the short circuit or the unusual situation the electrical quantity (electric current, voltage, power, frequency and so on) change as well as in

12、 transformer fuel tank when breakdown occurs the massive gas and the oil stream speed increase or the flowing tubing head pressure intensity increase the higher condition.The electrical power system request provides the

13、safekeeping of security for it to</p><p>　　(1) reliability. The reliability is refers to the protection to be supposed to move time the body should act reliably.Should not when the movement should reliable n

14、ot act.The reliability is to the relay protection installment performance most basic request. </p><p>　　(2) selectivity. The selectivity is refers first by the breakdown equipment logical 'OR' circui

15、t itself protection excision breakdown, when the breakdown equipment logical 'OR' circuit itself protection or the circuit breaker resist moves, only then allows by the neighboring equipment to protect, the line

16、protection or the circuit breaker malfunction protection excision breakdown.In order to guarantee has in the coordinate request protection and the identical protection has the coordinate reques</p><p>　　(3)

17、sensitivity. The sensitivity is refers when the equipment logical 'OR' circuit occurs by the extent of protection in the metallicity short circuit, the protective device should have the essential sensitivity coef

18、ficient, each kind of protection smallest sensitivity coefficient has the specific stipulation in the regulations.Selectivity and sensitive request, through relay protection installation realization. </p><p>

19、;　　(4) speed. The speed is refers to the protective device to be supposed to excise the short circuit breakdown as soon as possible, its date enhances the system stability, reduces the breakdown equipment and the line da

20、mage degree, reduces the breakdown to affect the scope, enhances automatic switches on again with the emergency power supply or the emergency apparatus automatic investment effect and so on. </p><p>　　Third,

21、 relay protection in 11OKV power supply system Chen Ai function </p><p>　　1. The guarantee continues the electricity system the reliability is plays the relay protection installment role the premise. Continu

22、es the electricity system the reliability is plays the relay protection installment role the premise.Generally speaking the relay protection reliability mainly by the disposition reasonable, the quality and the technical

23、 performance fine relay protection installment as well as the normal movement maintenance and the management guaranteed. </p><p>　　2. Relay protection in electrical power system safe operation function. The

24、relay protection mainly has following two points in the electrical power system safe operation function: </p><p>　　(1) safeguard electrical power system security.When is protected when the electrical power s

25、ystem part breaks down, should rapidly accurately for be separated from the breakdown part recent circuit breaker by this part relay protection equipment to send out the trip order, causes the breakdown part to interrupt

26、 promptly from the electrical power system, by maximum limit reduces to the electrical power system part itself damage, reduces to the electrical power system safe power supply influence, </p><p>　　（2）pair o

27、f electrical power system normal work carries on the prompt.Responded the electrical equipment the normal work situation, (whether there is and different e.g. frequent attendant) does send out the signal according to the

28、 normal work situation and the equipment movement maintenance condition, in order to the attendant carries on processing, either carries on the adjustment automatically by the equipment, either continues these to move ca

29、n cause the accident electrical equipment to excise</p><p>　　(3) pair of electrical power system movement carries on the monitoring.The relay protection is not merely an accident processing and the response

30、installment, simultaneously also is monitors the electrical power system normal operation the installment. </p><p>　　The relay protection is the electrical power system safe normal operation important safegu

31、ard, at present oneself after obtained the widespread application, along with the science and technology unceasing progress, the relay protection technology presents day by day to the microcomputer, the network, the inte

32、llectualization, protects, the control, the survey and the data communication integration development tendency.</p><p>　　110KV供電系統(tǒng)繼電保護(hù)作用淺析</p><p>　　電力系統(tǒng)的安全性和可靠性不僅關(guān)系到電力系統(tǒng)本身的運(yùn)行，同樣關(guān)系到送電范圍內(nèi)的廠礦、企業(yè)、居民

33、能否正常用電。同時(shí)由于電力系統(tǒng)具有較強(qiáng)的連通性，電力系統(tǒng)內(nèi)部的任何一個(gè)障礙都可能影響到整個(gè)系統(tǒng)的正常運(yùn)行，因而我們必須切實(shí)做好供電系統(tǒng)的繼電保護(hù)問(wèn)題。</p><p>　　一、 11OKV 供電系統(tǒng)</p><p>　　一般來(lái)說(shuō)電力系統(tǒng)包括發(fā)電、變電、輸電、配電和用電等五個(gè)環(huán)節(jié)，五個(gè)環(huán)節(jié)之間相互制約、相互合作共同促成了電力系統(tǒng)的穩(wěn)定。但事實(shí)上，由于這五個(gè)環(huán)節(jié)不總是在同一地點(diǎn)、同一時(shí)間完成的

34、，輸電要跨越遼闊的地區(qū)，同時(shí)電力系統(tǒng)要與不間的設(shè)備進(jìn)行連接，從而增強(qiáng)了其運(yùn)行環(huán)境的復(fù)雜性，導(dǎo)致電力系統(tǒng)的零故障率難以保證。110Kv供電系統(tǒng)是整個(gè)電力系統(tǒng)中的重要組成部分，其能否安全、穩(wěn)定、可靠的運(yùn)行，不僅關(guān)系到系統(tǒng)自身的運(yùn)行質(zhì)量，而且關(guān)系到其送電范圍內(nèi)廣大的用戶(hù)能否正常及時(shí)的用電，其對(duì)送電范圍內(nèi)經(jīng)濟(jì)的正常發(fā)展和社會(huì)的穩(wěn)定擔(dān)當(dāng)著重要的能源保障任務(wù)。因此110KV供電系統(tǒng)的設(shè)計(jì)和運(yùn)行管理必須全面遵守國(guó)家的有關(guān)標(biāo)準(zhǔn)和規(guī)范，以及相關(guān)地區(qū)的具體

35、規(guī)范標(biāo)準(zhǔn)。110Kv供電系統(tǒng)中包含著一次系統(tǒng)和二次系統(tǒng)。二次系統(tǒng)相對(duì)于一次系統(tǒng)較為復(fù)雜，犯次系統(tǒng)包括了繼電保護(hù)裝置、自動(dòng)裝置和二次回路。繼電保護(hù)裝置是在供電系統(tǒng)中用來(lái)對(duì)一次系統(tǒng)進(jìn)行監(jiān)視、測(cè)量、控制和保護(hù)，由繼電器來(lái)組成的一套專(zhuān)門(mén)的自動(dòng)裝置。合理的繼電保護(hù)裝置的正確設(shè)置對(duì)確保110Kv供電系統(tǒng)的正常運(yùn)行有著積極的作用。</p><p>　　二、 繼電保護(hù)的撅念及相關(guān)原理</p><p>　　

36、電力系統(tǒng)的飛速發(fā)展對(duì)繼電保護(hù)不斷提出新的要求，電子技術(shù)、計(jì)算機(jī)技術(shù)與通信技術(shù)的飛速發(fā)展又為繼電保護(hù)技術(shù)的發(fā)展不斷地注入了新的活力。</p><p>　　繼電保護(hù)是指當(dāng)電力系統(tǒng)中的電力元件(如發(fā)電機(jī)、線(xiàn)路等)或電力系統(tǒng)本身發(fā)生了故障危及電力系統(tǒng)安全運(yùn)行時(shí)，能夠向值班人員及時(shí)發(fā)出警告信號(hào)，或者直接向所控制的斷路器發(fā)出跳閘命令以終止這些事件發(fā)展的一種自動(dòng)化保護(hù)，繼電保護(hù)裝置能夠監(jiān)控電氣設(shè)備的不正常工作情況，并根據(jù)不正常

37、工作情況和設(shè)備運(yùn)行維護(hù)條件的不同發(fā)出提示信號(hào)，以便值班人員進(jìn)行及時(shí)處理，或由保護(hù)裝置自動(dòng)進(jìn)行調(diào)整，或?qū)⒛切├^續(xù)運(yùn)行可能會(huì)引起事故的電氣設(shè)備予以切除。反應(yīng)不正常工作情況的繼電保護(hù)裝置一般帶一定的延時(shí)動(dòng)作。</p><p>　　繼電保護(hù)的工作原理主要是利用了電力系統(tǒng)中元件發(fā)生短路或異常情況時(shí)電氣量(電流、電壓、功率、頻率等)的變化以及變壓器油箱內(nèi)故障時(shí)發(fā)生的大量瓦斯和油流速度的增大或油壓強(qiáng)度的增高等條件。電力系統(tǒng)要求

38、為其提供安全保護(hù)的繼電裝置具備以下性能:</p><p>　　(1) 可靠性 。 可靠性是指保護(hù)該動(dòng)體時(shí)應(yīng)可靠動(dòng)作。不該動(dòng)作時(shí)應(yīng)可靠不動(dòng)作?？煽啃允菍?duì)繼電保護(hù)裝置性能的最根本的要求。</p><p>　　〔2) 選擇性 。 選擇性是指首先由故障設(shè)備或線(xiàn)路本身的保護(hù)切除故障，當(dāng)故障設(shè)備或線(xiàn)路本身的保護(hù)或斷路器拒動(dòng)時(shí)，才允許由相鄰設(shè)備保護(hù)、線(xiàn)路保護(hù)或斷路器失靈保護(hù)切除故障。為保證對(duì)相鄰設(shè)備和線(xiàn)

39、路有配合要求的保護(hù)和同一保護(hù)內(nèi)有配合要求的兩元件(如啟動(dòng)與跳閘元件或閉鎖與動(dòng)作元件)的選擇性，其靈敏系數(shù)及動(dòng)作時(shí)間，在一般情況下應(yīng)相互配合。</p><p>　　(3) 靈敏性 。 靈敏性是指在設(shè)備或線(xiàn)路的被保護(hù)范圍內(nèi)發(fā)生金屬性短路時(shí)，保護(hù)裝置應(yīng)具有必要的靈敏系數(shù)，各類(lèi)保護(hù)的最小靈敏系數(shù)在規(guī)程中有具體規(guī)定。選擇性和靈敏性的要求，通過(guò)繼電保護(hù)的整定實(shí)現(xiàn)。</p><p>　　(4) 速動(dòng)性

40、。 速動(dòng)性是指保護(hù)裝置應(yīng)盡快地切除短路故障，其日的是提高系統(tǒng)穩(wěn)定性，減輕故障設(shè)備和線(xiàn)路的損壞程度，縮小故障波及范圍，提高自動(dòng)重合閘和備用電源或備用設(shè)備自動(dòng)投入的效果等。</p><p>　　三、 繼電保護(hù)在11OKV供電系統(tǒng)障礙中的作用</p><p>　　1. 保證繼電系統(tǒng)的可靠性是發(fā)揮繼電保護(hù)裝置作用的前提。</p><p>　　繼電系統(tǒng)的可靠性是發(fā)揮繼電保護(hù)裝

41、置作用的前提。一般來(lái)說(shuō)繼電保護(hù)的可靠性主要由配置合理、質(zhì)量和技術(shù)性能優(yōu)良的繼電保護(hù)裝置以及正常的運(yùn)行維護(hù)和管理來(lái)保證。</p><p>　　2. 繼電保護(hù)在電力系統(tǒng)安全運(yùn)行中的作用。</p><p>　　繼電保護(hù)在電力系統(tǒng)安全運(yùn)行中的作用主要有以下兩點(diǎn):</p><p>　　(1) 保障電力系統(tǒng)的安全性。當(dāng)被保護(hù)的電力系統(tǒng)元件發(fā)生故障時(shí)，應(yīng)該由該元件的繼電保護(hù)裝置迅

42、速準(zhǔn)確地給脫離故障元件最近的斷路器發(fā)出跳閘命令，使故障元件及時(shí)從電力系統(tǒng)中斷開(kāi)，以最大限度地減少對(duì)電力系統(tǒng)元件本身的損壞，降低對(duì)電力系統(tǒng)安全供電的影響，并滿(mǎn)足電力系統(tǒng)的某些特定要求(如保持電力系統(tǒng)的暫態(tài)穩(wěn)定性等)。</p><p>　　(2) 對(duì)電力系統(tǒng)的不正常工作進(jìn)行提示。反應(yīng)電氣設(shè)備的不正常工作情況，并根據(jù)不正常工作情況和設(shè)備運(yùn)行維護(hù)條件的不同(例如有無(wú)經(jīng)常值班人員)發(fā)出信號(hào)，以便值班人員進(jìn)行處理，或由裝置自

43、動(dòng)地進(jìn)行調(diào)整，或?qū)⒛切├^續(xù)運(yùn)行會(huì)引起事故的電氣設(shè)備予以切除。反應(yīng)不正常工作情況的繼電保護(hù)裝置允許帶一定的延時(shí)動(dòng)作。</p><p>　　(3) 對(duì)電力系統(tǒng)的運(yùn)行進(jìn)行監(jiān)控。繼電保護(hù)不僅僅是一個(gè)事故處理與反應(yīng)裝置，同時(shí)也是監(jiān)控電力系統(tǒng)正常運(yùn)行的裝置。</p><p>　　繼電保護(hù)是電力系統(tǒng)安全正常運(yùn)行的重要保障，目前己經(jīng)得到了廣泛的應(yīng)用，隨著科學(xué)技術(shù)的不斷進(jìn)步，繼電保護(hù)技術(shù)日益呈現(xiàn)出向微機(jī)化，