854611251110KV供電系統(tǒng)繼電保護(hù)作用淺析中英文翻譯資料

1、110kv power supply system relay protection function brief analysisnot only the 110kv power supply system relay protection function brief analysis electrical power system security and the reliability relate electrical power system itself the movement, similarly relates in the power transmission scope

2、 the factories and mines, the enterprise, whether the inhabitant 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 operation, thus we must complete the

3、power supply system practically the relay protection question. first, the 11okv power supply systemgenerally 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, be

4、tween 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 complete, the electric transmission must surmount the vast area, simultaneously the ele

5、ctrical power system must not carry on the connection with the equipment, thus strengthened its movement environment complexity, causes electrical power system the zero failure rate to guarantee with difficulty.the 110kv power supply system is in the entire electrical power system important constitu

6、ent, it whether safe, stable, reliable movement, not only relates the system own movement quality, whether moreover relates in its power transmission scope general user normal prompt using electricity, it the economical normal development and the society is stably taking on the important energy safe

7、guard duty to the power transmission scope in.therefore the 110kv power supply system design and the movement management must observe national comprehensively the related standard and the standard, as well as correlation area specifically standard standard.in the 110kv power supply system is contain

8、ing a subsystems and two subsystems.two subsystems were opposite in a subsystems are complex, violate the subsystems to include the relay protection installment, the automatic device and the secondary circuit.the relay protection installment is uses for in the power supply system to a subsystems to

9、carry on the surveillance, the survey, the control and the protection, is composed set of special automatic devices by the relay.the reasonable relay protection installment correct establishment to guarantees the 110kv power supply system the normal operation to have the positive function. second, t

10、he relay protection digs reads and the related principle 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 unceasingly has poured into the new vigor for

11、the relay protection technology development. 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 itself has occurred the breakdown endangers the electrical power system safe operation, can to the at

12、tendant promptly send out the warning signal, or directly to the circuit breaker 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 electrical equipment the normal work situation, and sends

13、out the prompt signal differently according to the normal work situation and the equipment movement maintenance condition, in order to the attendant carries on prompt processing, either carries on the adjustment automatically by the protective device, either continues these to move possibly can caus

14、e the accident electrical equipment to excise.response normal work situation relay protection equipment common belt certain time-lag action. the relay protection principle of work mainly has used in the electrical power system the part has when the short circuit or the unusual situation the electric

15、al quantity (electric current, voltage, power, frequency and so on) change as well as in 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 provi

16、des the safekeeping of security for it to continue the electricity installment to have following performance: (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

17、to the relay protection installment performance most basic request. (2) selectivity. the selectivity is refers first by the breakdown equipment logical or circuit itself protection excision breakdown, when the breakdown equipment logical or circuit itself protection or the circuit breaker resist mov

18、es, only then allows by the neighboring equipment to protect, the line 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 request two parts (for example start and t

19、rip part or block system and movement part) the selectivity to the neighboring equipment and the line, its sensitivity coefficient and the operating time, should coordinate mutually in the ordinary circumstances. (3) sensitivity. the sensitivity is refers when the equipment logical or circuit occurs

20、 by the extent of protection in the metallicity short circuit, the protective device should have the essential sensitivity coefficient, each kind of protection smallest sensitivity coefficient has the specific stipulation in the regulations.selectivity and sensitive request, through relay protection

21、 installation realization. (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 damage degree, reduces the breakdown to affect the scope,

22、enhances automatic switches on again with the emergency power supply or the emergency apparatus automatic investment effect and so on. third, relay protection in 11okv power supply system chen ai function 1. the guarantee continues the electricity system the reliability is plays the relay protection

23、 installment role the premise. continues 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 performance fine relay protection install

24、ment as well as the normal movement maintenance and the management guaranteed. 2. relay protection in electrical power system safe operation function. the relay protection mainly has following two points in the electrical power system safe operation function: (1) safeguard electrical power system se

25、curity.when is protected when the electrical power system 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 promptly from the electrica

26、l power system, by maximum limit reduces to the electrical power system part itself damage, reduces to the electrical power system safe power supply influence, and satisfies the electrical power system certain specific requests (for example maintenance electrical power system transition condition st

27、able and so on). （2）pair of 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 normal work situation and the equipment movement main

28、tenance 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 excise.response normal work situation relay protection installment permission belt certai

29、n time-lag action. (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 the electrical power system normal operation the installment. the relay protection is the

30、electrical power system safe normal operation important safeguard, 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 intellectualization, p

31、rotects, the control, the survey and the data communication integration development tendency. 110kv供電系統(tǒng)繼電保護(hù)作用淺析電力系統(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。一、 11okv 供電系統(tǒng)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

32、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，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

33、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)組成的一套專門的自動(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。二、 繼電保護(hù)的撅念及相關(guān)原理電力系統(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。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。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