電氣專業(yè)中英文資料翻譯----110kv供電系統(tǒng)繼電保護作用淺析

1、<p>　　110Kv power supply system relay protection function brief analysis</p><p>　　Not only the 110Kv power supply system relay protection function brief analysis electrical power system security and the

2、 reliability relate electrical power system itself the movement, similarly relates in the power transmission scope the factories and mines, the enterprise, whether the inhabitant uses electricity normally.Because simulta

3、neously the electrical power system has the strong connectivity, electrical power system interior any barrier all possibly affects the overall system normal ope</p><p>　　First, the 11OKV power supply system&

4、lt;/p><p>　　Generally speaking electrical power system including the electricity generation, changes the electricity, the electric transmission, the power distribution and uses electricity and so on five links,

5、 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 the identical place, the identical time comp

6、lete, the electric transmission must surmount the vast area, simultaneously the el</p><p>　　Second, the relay protection digs reads and the related principle </p><p>　　Electrical power system ra

7、pid development to the relay protection to propose unceasingly the new request, the electronic technology, the computer technology and the communication rapid development unceasingly has poured into the new vigor for the

8、 relay protection technology development. </p><p>　　The relay protection is refers when in the electrical power system electric power part (for example generator, line and so on) or electrical power system i

9、tself 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 breaker which controls sends out the trip order

10、 to terminate one kind of automated protection which these events develop, the relay protection equipment can monitor the ele</p><p>　　The relay protection principle of work mainly has used in the electrical

11、 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 transformer fuel tank when breakdown occurs

12、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 safekeeping of security for it to</p>

13、<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 not act.The reliability is to the relay protec

14、tion installment performance most basic request. </p><p>　　(2) selectivity. The selectivity is refers first by the breakdown equipment logical 'OR' circuit itself protection excision breakdown, when

15、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 protection or the circuit breaker malfunction

16、 protection excision breakdown.In order to guarantee has in the coordinate request protection and the identical protection has the coordinate reques</p><p>　　(3) sensitivity. The sensitivity is refers when t

17、he equipment logical 'OR' circuit occurs by the extent of protection in the metallicity short circuit, the protective device should have the essential sensitivity coefficient, each kind of protection smallest sen

18、sitivity coefficient has the specific stipulation in the regulations.Selectivity and sensitive request, through relay protection installation realization. </p><p>　　(4) speed. The speed is refers to the prot

19、ective 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 damage degree, reduces the breakdown to affect

20、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, relay protection in 11OKV power supply syste

21、m Chen Ai function </p><p>　　1. The guarantee continues the electricity system the reliability is plays the relay protection installment role the premise. Continues the electricity system the reliability is

22、plays the relay protection installment role the premise.Generally speaking the relay protection reliability mainly by the disposition reasonable, the quality and the technical performance fine relay protection installmen

23、t as well as the normal movement maintenance and the management guaranteed. </p><p>　　2. Relay protection in electrical power system safe operation function. The relay protection mainly has following two poi

24、nts in the electrical power system safe operation function: </p><p>　　(1) safeguard electrical power system security.When is protected when the electrical power system part breaks down, should rapidly accura

25、tely 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 promptly from the electrical power system, b

26、y 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 of electrical power system normal work carries

27、 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 normal work situation and the equipment move

28、ment maintenance condition, in order to the attendant carries on processing, either carries on the adjustment automatically by the equipment, either continues these to move can cause the accident electrical equipment to

29、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 installment, simultaneously also is monitors

30、the electrical power system normal operation the installment. </p><p>　　The relay protection is the electrical power system safe normal operation important safeguard, at present oneself after obtained the wi

31、despread application, along with the science and technology unceasing progress, the relay protection technology presents day by day to the microcomputer, the network, the intellectualization, protects, the control, the s

32、urvey and the data communication integration development tendency.</p><p>　　110KV供電系統(tǒng)繼電保護作用淺析</p><p>　　電力系統(tǒng)的安全性和可靠性不僅關系到電力系統(tǒng)本身的運行，同樣關系到送電范圍內(nèi)的廠礦、企業(yè)、居民能否正常用電。同時由于電力系統(tǒng)具有較強的連通性，電力系統(tǒng)內(nèi)部的任何一個障礙都可能影響到整個

33、系統(tǒng)的正常運行，因而我們必須切實做好供電系統(tǒng)的繼電保護問題。</p><p>　　一、 11OKV 供電系統(tǒng)</p><p>　　一般來說電力系統(tǒng)包括發(fā)電、變電、輸電、配電和用電等五個環(huán)節(jié)，五個環(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。但事實上，由于這五個環(huán)節(jié)不總是在同一地點、同一時間完成的，輸電要跨越遼闊的地區(qū)，同時電力系統(tǒng)要與不間的設備進行連接，從而增強了其運行環(huán)境的復雜性，

34、導致電力系統(tǒng)的零故障率難以保證。110Kv供電系統(tǒng)是整個電力系統(tǒng)中的重要組成部分，其能否安全、穩(wěn)定、可靠的運行，不僅關系到系統(tǒng)自身的運行質(zhì)量，而且關系到其送電范圍內(nèi)廣大的用戶能否正常及時的用電，其對送電范圍內(nèi)經(jīng)濟的正常發(fā)展和社會的穩(wěn)定擔當著重要的能源保障任務。因此110KV供電系統(tǒng)的設計和運行管理必須全面遵守國家的有關標準和規(guī)范，以及相關地區(qū)的具體規(guī)范標準。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)相對于一次系統(tǒng)較為復雜，犯

35、次系統(tǒng)包括了繼電保護裝置、自動裝置和二次回路。繼電保護裝置是在供電系統(tǒng)中用來對一次系統(tǒng)進行監(jiān)視、測量、控制和保護，由繼電器來組成的一套專門的自動裝置。合理的繼電保護裝置的正確設置對確保110Kv供電系統(tǒng)的正常運行有著積極的作用。</p><p>　　二、 繼電保護的撅念及相關原理</p><p>　　電力系統(tǒng)的飛速發(fā)展對繼電保護不斷提出新的要求，電子技術、計算機技術與通信技術的飛速發(fā)展又為

36、繼電保護技術的發(fā)展不斷地注入了新的活力。</p><p>　　繼電保護是指當電力系統(tǒng)中的電力元件(如發(fā)電機、線路等)或電力系統(tǒng)本身發(fā)生了故障危及電力系統(tǒng)安全運行時，能夠向值班人員及時發(fā)出警告信號，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)展的一種自動化保護，繼電保護裝置能夠監(jiān)控電氣設備的不正常工作情況，并根據(jù)不正常工作情況和設備運行維護條件的不同發(fā)出提示信號，以便值班人員進行及時處理，或由保護裝置自動進

37、行調(diào)整，或?qū)⒛切├^續(xù)運行可能會引起事故的電氣設備予以切除。反應不正常工作情況的繼電保護裝置一般帶一定的延時動作。</p><p>　　繼電保護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)故障時發(fā)生的大量瓦斯和油流速度的增大或油壓強度的增高等條件。電力系統(tǒng)要求為其提供安全保護的繼電裝置具備以下性能:</p><p>　　(1

38、) 可靠性 。 可靠性是指保護該動體時應可靠動作。不該動作時應可靠不動作?？煽啃允菍^電保護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備或線路本身的保護切除故障，當故障設備或線路本身的保護或斷路器拒動時，才允許由相鄰設備保護、線路保護或斷路器失靈保護切除故障。為保證對相鄰設備和線路有配合要求的保護和同一保護內(nèi)有配合要求的兩元件(如啟動與跳閘元件或閉鎖與動作元件)的選擇

39、性，其靈敏系數(shù)及動作時間，在一般情況下應相互配合。</p><p>　　(3) 靈敏性 。 靈敏性是指在設備或線路的被保護范圍內(nèi)發(fā)生金屬性短路時，保護裝置應具有必要的靈敏系數(shù)，各類保護的最小靈敏系數(shù)在規(guī)程中有具體規(guī)定。選擇性和靈敏性的要求，通過繼電保護的整定實現(xiàn)。</p><p>　　(4) 速動性 。 速動性是指保護裝置應盡快地切除短路故障，其日的是提高系統(tǒng)穩(wěn)定性，減輕故障設備和線路的損

40、壞程度，縮小故障波及范圍，提高自動重合閘和備用電源或備用設備自動投入的效果等。</p><p>　　三、 繼電保護在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)揮繼電保護裝置作用的前提。一般來說繼電保護的可靠性主要由配置合理、質(zhì)量和技術性能優(yōu)良的繼電保護裝置以及

41、正常的運行維護和管理來保證。</p><p>　　2. 繼電保護在電力系統(tǒng)安全運行中的作用。</p><p>　　繼電保護在電力系統(tǒng)安全運行中的作用主要有以下兩點:</p><p>　　(1) 保障電力系統(tǒng)的安全性。當被保護的電力系統(tǒng)元件發(fā)生故障時，應該由該元件的繼電保護裝置迅速準確地給脫離故障元件最近的斷路器發(fā)出跳閘命令，使故障元件及時從電力系統(tǒng)中斷開，以最大限度

42、地減少對電力系統(tǒng)元件本身的損壞，降低對電力系統(tǒng)安全供電的影響，并滿足電力系統(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) 對電力系統(tǒng)的不正常工作進行提示。反應電氣設備的不正常工作情況，并根據(jù)不正常工作情況和設備運行維護條件的不同(例如有無經(jīng)常值班人員)發(fā)出信號，以便值班人員進行處理，或由裝置自動地進行調(diào)整，或?qū)⒛切├^續(xù)運行會引起事故的電氣設備予以切除。反應不正常工作情況的繼電保護裝