电力系统继电保护第二版课后答案.docx

1、电力系统继电保护第二版课后答案 电力系统继电保护第二版课后答案 电力系统继电保护论文中英文资料 Relay protection development present situation Abstract reviewed our country electrical power system relay protection technological devil orpiment process, has outlined the microcomputer relay protection technology achievement, pro posed the future rel

2、ay protection technological development tendency will be: Computerizes, n networked, protects, the control, the survey, the data communication integration and the artificial I intellectualization. Key word relay protection present situation development, relay protections future development 1 relay p

3、rotection development present situation The electrical power system rapid development to the relay protection proposed unceasingly t he new request, the electronic technology, computer technology and the communication rapid development unceasingly has poured into the new vigor for the relay protecti

4、on technology de velopment, therefore, the relay protection technology is advantageous, has completed the deve lopment 4 historical stage in more than 40 years time. After the founding of the nation, our country relay protection discipline, the relay protection de sign, the relay manufacture industr

5、y and the relay protection technical team grows out of noth ing, has passed through the path in about 10 years which advanced countries half century pa sses through. The 50s, our country engineers and technicians creatively absorption, the diges tion, have grasped the overseas advanced relay protect

6、ion equipment performance and the m ovement technology，completed to have the deep relay protection theory attainments and the rich movement experience relay protection technical team, and grew the instruction function t o the national relay protection technical teams establishment. The acheng relay

7、factory introd uction has digested at that time the overseas advanced relay manufacture technology, has est ablished our country relay manufacturing industry. Thus our country has completed the relay p rotection research, the design, the manufacture, the movement and the teaching complete sys tern i

8、n the 60s. This is a time which the mechanical and electrical relay protection prospers, was our country relay protection technology development has laid the solid foundation. From the end of the 50s, the transistor relay protection was starting to study. In the 60s to t he 80s in are the times whic

9、h the transistor relay protection vigorous development and widely uses. Tianjin University and the Nanjing electric power automation plant cooperation research 500kv transistor direction high frequency protection the transistor high frequency block system which develops with the Nanjing electric pow

10、er automation research institute is away from th e protection, moves on the Gezhou Dam 500 kv line , finished the 500kv line protection to d epend upon completely from the overseas import time. From the 70s, started based on the integration operational amplifier integrated circuit protectio n to stu

11、dy. Has formed the complete series to at the end of 80s integrated circuit protection, substitutes for the transistor protection gradually. The development, the production, the applica tion the integrated circuit protects which to the beginning of the 90s still were in the dominan t position, this w

12、as the integrated circuit protection time. The integrated electricity road work fr equency conversion quantity direction develops which in this aspect Nanjing electric power aut omation research institute high frequency protected the vital role , the Tianjin University and t he Nanjing electric powe

13、r automation plant cooperation development integrated circuit phase v oltage compensated the type direction high frequency protection also moves in multi- strip 220 kv and on the 500kv line. Our country namely started the computer relay protection research from the end of the 70s， the institutions o

14、f higher learning and the scientific research courtyard institute forerunners fu notion. Huazhong University of Science and Technology, southeast the university, the North C hina electric power institute, the Xian Jiaotong University, the Tianjin University, Shanghai Jiao tong University, the Chongq

15、ing University and the Nanjing electric power automation research institute one after another has all developed the different principle, the different pattern microc omputer protective device. In 1984 the original North China electric power institute developed the transmission line microcomputer pro

16、tective device first through the appraisal, and in the system the find application, had opened in our country relay protection history the new page, pr otected the promotion for the microcomputer to pave the way. In the host equipment protectio n aspect, the generator which southeast the university

17、and Huazhong University of Science a nd Technology develops loses magnetism protection, the generator protection and the generat or?Bank of transformers protection also one after another in 1989，in 1994 through appraisal, investment movement. The Nanjing electric power automation research institute

18、develops micro computer line protective device also in 1991 through appraisal. The Tianjin University and the Nanjing electric power automation plant cooperation development microcomputer phase voltag e compensated the type direction high frequency protection, the Xian Jiaotong University and the Xu

19、 Chang relay factory cooperation development positive sequence breakdown component direction high frequency protection also one after another in 1993，in 1996 through the appra isal. Heres, the different principle, the different type microcomputer line and the host equipme nt protect unique, provided

20、 one batch of new generation of performance for the electrical po wer system fine, the function has been complete, the work reliable relay protection installment. Along with the microcomputer protective device research, in microcomputer aspect and so on protection software, algorithm has also yielde

21、d the very many theories result. May say starte d our country relay protection technology from the 90*s to enter the time which the microcom puter protected. 2 relay protections future development The relay protection technology future the tendency will be to computerizes, networked, the int ellectu

22、alization, will protect, the control, the survey and the data communication integration de velopment. 2.1 computerizes Along with the computer hardware swift and violent development, the microcomputer protection hardware also unceasingly is developing. The original North China electric power institu

23、te de velops the microcomputer line protection hardware has experienced 3 development phases: Is published from 8 lists cpu structure microcomputer protection, does not develop to 5 years ti me to the multi- cpu structure, latter developed to the main line does not leave the module t he big modular

24、structure, the performance enhances greatly, obtained the widespread applicati on. Huazhong University of Science and Technology develops the microcomputer protection al so is from 8 cpu, develops to take the labor controlling machine core partially as the foundati on 32 microcomputers protection. T

25、he Nanjing electric power automation research institute from the very beginning has develop ed 16 cpu is the foundation microcomputer line protection, obtained the big area promotion, a t present also is studying 32 protections hardware system. Southeast the university develops t he microcomputer ho

26、st equipment protects the hardware also passed through improved and th e enhancement many times. The Tianjin University from the very beginning is the developmen t take more than 16 cpu as the foundation microcomputer line protection, in 1988 namely star ted to study take 32 digital signals processo

27、r (dsp) as the foundation protection, the control, t he survey integration microcomputer installment, at present cooperated with the Zhuhai Jin aut omatic equipment company develops one kind of function complete 32 big modules, a module was a minicomputer. Uses 32 microcomputers chips only to focus

28、by no means on the preci sion, because of the precision the a/d switch resolution limit, is surpassed time 16 all is acce pts with difficulty in the conversion rate and the cost aspect; 32 microcomputers chips have t he very high integration rate more importantly, very high operating frequency and c

29、omputation speed, very big addressing space, rich command system and many inputs outlet. The cpu re gister, the data bus, the address bus all are 32，has the memory management function, the memory protection function and the duty transformation function, and (cache) and the floating number part all i

30、ntegrates the high speed buffer in cpu.The electrical power system the request which protects to the microcomputer enhances uncea singly, besides protection basic function, but also should have the large capacity breakdown i nformation and the data long-term storage space, the fast data processing f

31、unction, the formid able traffic capacity, with other protections, the control device and dispatches the networking b y to share the entire system data, the information and the network resources ability, the high er order language programming and so on. This requests the microcomputer protective dev

32、ice to have is equal to a pc machine function. In the computer protection development initial per iod, once conceived has made the relay protection installment with a minicomputer. At that ti me because the small machine volume big, the cost high, the reliability was bad, this tentativ e plan was no

33、t realistic. Now, with the microcomputer protective device size similar labor cont rolling machine function, the speed, the storage capacity greatly has surpassed the same year small machine, therefore, made the relay protection with complete set labor controlling machi ne the opportunity already to be mature, this will be one of development directions which the microcomputer