110KV供电系统继电保护作用浅析中英文翻译资料

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 circui

18、t breaker resist moves, 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

19、 example start and trip 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 logic

20、al '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 sensitivity coefficient has the specific stipulation in the regulations.selectivity and sensitive req

21、uest, through relay protection 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 b

22、reakdown to affect the scope, 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

23、 is plays the relay protection 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

24、 fine relay protection installment 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) safegu

25、ard electrical power system security.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 interru

26、pt 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, and satisfies the electrical power system certain specific requests (for example maintenance electrical power

27、system transition condition stable 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 a

28、nd 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 can cause the accident electrical equipment to excise.response normal work situation relay protection inst

29、allment permission belt certain 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

30、. the relay protection is the 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 netwo

31、rk, the intellectualization, protects, the control, the survey and the data communication integration development tendency. 110kv供电系统继电保护作用浅析电力系统的安全性和可靠性不仅关系到电力系统本身的运行，同样关系到送电范围内的厂矿、企业、居民能否正常用电。同时由于电力系统具有较强的连通性，电力系统内部的任何一个障碍都可能影响到整个系统的正常运行，因而我们必须切实做好供电系统的继电保护问题。一、 11okv 供电系统一般来说电力系统包括发电、变电、输电、配电和用电等

32、五个环节，五个环节之间相互制约、相互合作共同促成了电力系统的稳定。但事实上，由于这五个环节不总是在同一地点、同一时间完成的，输电要跨越辽阔的地区，同时电力系统要与不间的设备进行连接，从而增强了其运行环境的复杂性，导致电力系统的零故障率难以保证。110kv供电系统是整个电力系统中的重要组成部分，其能否安全、稳定、可靠的运行，不仅关系到系统自身的运行质量，而且关系到其送电范围内广大的用户能否正常及时的用电，其对送电范围内经济的正常发展和社会的稳定担当着重要的能源保障任务。因此110kv供电系统的设计和运行管理必须全面遵守国家的有关标准和规范，以及相关地区的具体规范标准。110kv供电系统中包含着一

33、次系统和二次系统。二次系统相对于一次系统较为复杂，犯次系统包括了继电保护装置、自动装置和二次回路。继电保护装置是在供电系统中用来对一次系统进行监视、测量、控制和保护，由继电器来组成的一套专门的自动装置。合理的继电保护装置的正确设置对确保110kv供电系统的正常运行有着积极的作用。二、 继电保护的撅念及相关原理电力系统的飞速发展对继电保护不断提出新的要求，电子技术、计算机技术与通信技术的飞速发展又为继电保护技术的发展不断地注入了新的活力。继电保护是指当电力系统中的电力元件(如发电机、线路等)或电力系统本身发生了故障危及电力系统安全运行时，能够向值班人员及时发出警告信号，或者直接向所控制的断路器发出跳闸命令以终止这些事件发展的一种自动化保护，继电保护装置能够监控电气设备的不正常工作情况，并根据不正常工作情况和设备运行维护条件的不同发出提示信号，以便值班人员进行及时处理，或由保护装置自动进行调整，或将那些继续运行可能会引起事故的电气设备予以切除。反应不正常工作情况的继电保护装置一般带一定的延时动作。继电保护的工作原理主要是利用了电力系统中元件发生短路或