1、电力系统继电保护技术的研究 Relay protection development present situation Institution:Tianjin Electric Power Association Abstract reviewed our country electrical power system relay protection technological development process, has outlined the microcomputer relay protection technology achievement, proposed the f
2、uture relay protection technological development tendency will be: Computerizes, networked, protects, the control, the survey, the data communication integration and the artificial intellectualization. Key word relay protection present situation development， relay protections future development 1 re
3、lay protection development present situation The electrical power system rapid development to the relay protection proposed unceasingly the new request, the electronic technology, computer technology and the communication rapid development unceasingly has poured into the new vigor for the relay prot
4、ection technology development, therefore, the relay protection technology is advantageous, has completed the development 4 historical stage in more than 40 years time. After the founding of the nation, our country relay protection discipline, the relay protection design, the relay manufacture indust
5、ry and the relay protection technical team grows out of nothing, has passed through the path in about 10 years which advanced countries half century passes through. The 50s, our country engineers and technicians creatively absorption, the digestion, have grasped the overseas advanced relay protectio
6、n equipment performance and the movement technology , completed to have the deep relay protection theory attainments and the rich movement experience relay protection technical team, and grew the instruction function to the national relay protection technical teams establishment. The acheng relay fa
7、ctory introduction has digested at that time the overseas advanced relay manufacture technology, has established our country relay manufacturing industry. Thus our country has completed the relay protection research, the design, the manufacture, the movement and the teaching complete system in the 6
8、0s. 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 the 80s in are the times which the tr
9、ansistor 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 power autom
10、ation research institute is away from the protection, moves on the Gezhou Dam 500 kv line , finished the 500kv line protection to depend upon completely from the overseas import time. From the 70s, started based on the integration operational amplifier integrated circuit protection to study. Has for
11、med the complete series to at the end of 80s integrated circuit protection,substitutes for the transistor protection gradually. The development, the production, the application the integrated circuit protects which to the beginning of the 90s still were in the dominant position, this was the integra
12、ted circuit protection time. The integrated electricity road work frequency conversion quantity direction develops which in this aspect Nanjing electric power automation research institute high frequency protected the vital role , the Tianjin University and the Nanjing electric power automation plan
13、t cooperat - 2 - ion development integrated circuit phase voltage compensated the type direction high frequency protection also moves in multi- strip 220kv and on the 500kv line. Our country namely started the computer relay protection research from the end of the 70s , the institutions of higher le
14、arning and the scientific research courtyard institute forerunners function. Huazhong University of Science and Technology, southeast the university, the North China electric power institute, the Xian Jiaotong University, the Tianjin University, Shanghai Jiaotong University, the Chongqing University
15、 and the Nanjing electric power automation research institute one after another has all developed the different principle, the different pattern microcomputer protective device. In 1984 the original North China electric power institute developed the transmission line microcomputer protective device
16、first through the appraisal, and in the system the find application, had opened in our country relay protection history the new page, protected the promotion for the microcomputer to pave the way. In the host equipment protection aspect, the generator which southeast the university and Huazhong Univ
17、ersity of Science and Technology develops loses magnetism protection, the generator protection and the generator?Bank of transformers protection also one after another in 1989, in 1994 through appraisal, investment movement. The Nanjing electric power automation research institute develops microcomp
18、uter line protective device also in 1991 through appraisal. The Tianjin University and the Nanjing electric power automation plant cooperation development microcomputer phase voltage compensated the type direction high frequency protection, the Xian Jiaotong University and the Xu Chang relay factory
19、 cooperation development positive sequence breakdown component direction high frequency protection also one after another in 1993, in 1996 through the appraisal. Heres, the different principle, the different type microcomputer line and the host equipment protect unique, provided one batch of new gen
20、eration of performance for the electrical power 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 yielded the very many theori
21、es result. May say started our country relay protection technology from the 90s to enter the time which the microcomputer protected. 2 relay protections future development The relay protection technology future the tendency will be to computerizes, networked, the intellectualization, will protect, t
22、he control, the survey and the data communication integration development. 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 institute develops the microcomput
23、er line protection hardware has experienced 3 development phases: Is published from 8 lists cpu structure microcomputer protection, does not develop to 5 years time to the multi- cpu structure, latter developed to the main line does not leave the module the big modular structure, the performance enh
24、ances greatly, obtained the widespread application. Huazhong University of Science and Technology develops the microcomputer protection also is from 8 cpu, develops to take the labor controlling machine core partially as the foundation 32 microcomputers protection. The Nanjing electric power automat
25、ion research institute from the very beginning has developed 16 cpu is the foundation microcomputer line protection, obtained the big area promotion, at present also i电力系统继电保护技术的研究 s studying 32 protections hardware system. Southeast the university develops the microcomputer host equipment protects
26、the hardware also passed through improved and the enhancement many times. The Tianjin University from the very beginning is the development take more than 16 cpu as the foundation microcomputer line protection, in 1988 namely started to study take 32 digital signals processor (dsp) as the foundation
27、 protection, the control, the survey integration microcomputer installment, at present cooperated with the Zhuhai Jin automatic equipment company develops one kind of function complete 32 big modules, a module was a minicomputer. Uses 32 microcomputers chips only to focus by no means on the precisio
28、n, because of the precision the a/d switch resolution limit, is surpassed time 16 all is accepts with difficulty in the conversion rate and the cost aspect； 32 microcomputers chips have the very high integration rate more importantly, very high operating frequency and computation speed, very big add
29、ressing space, rich command system and many inputs outlet. The cpu register, 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 integrates the high speed buffe
30、r in cpu. The electrical power system the request which protects to the microcomputer enhances unceasingly, besides protection basic function, but also should have the large capacity breakdown information and the data long-term storage space, the fast data processing function, the formidable traffic
31、 capacity, with other protections, the control device and dispatches the networking by to share the entire system data, the information and the network resources ability, the higher order language programming and so on. This requests the microcomputer protective device to have is equal to a pc machi
32、ne function. In the computer protection development initial period, once conceived has made the relay protection installment with a minicomputer. At that time because the small machine volume big, the cost high, the reliability was bad, this tentative plan was not realistic. Now, with the microcompu
33、ter protective device size similar labor controlling 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 machine the opportunity already to be mature, this will be one of develop
34、ment directions which the microcomputer protected. The Tianjin University has developed the relay protection installment which Cheng Yongtong microcomputer protective device structure quite same not less than one kind of labor controlling machine performs to change artificially becomes. This kind of
35、 equipment merit includes: has the 486pc machine complete function, can satisfy each kind of function request which will protect to current and the future microcomputer. size and structure and present microcomputer protective device similar, the craft excellent, quakeproof, guards against has been h
36、ot, guards against electronmagetic interference ability, may move in the very severe working conditions, the cost may accept. uses the std main line or the pc main line, the hardware modulation, may select the different module wilfully regarding the different protection, the disposition nimble, is e
37、asy to expand. Relay protection installment , computerizes is the irreversible development tendency. How but to satisfies the electrical power system request well, how further enhances the relay protection the reliability, how obtains the bigger economic efficiency and the social efficiency, still must conduct specifically the thorough research. 2.2 networked The computer network has become the information age as the information and the data communication tool the technical prop, caused the human production and the social life appearance has had the ra
