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山东理工大学
毕业设计
（外文翻译材料）
Relay protection development prent situation 学 院： 专 业： 学生姓名： 指导教师： 电气与电子工程学院 电气工程及其自动化
Abstract: Reviewed our country electrical power system relay protection technological development process, has outlined the microcomputer relay protection technology achievement, propo the future 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, prent situation development, future development
1 relay protection development prent situation人山人海英文
The electrical power system rapid development to the relay protection propo unceasingly the new request, the electronic technology, computer technology and the communication rapid development un
ceasingly has poured into the new vigor for the relay protection technology development, therefore, the relay protection technology is advantageous, has completed the development 4 historical stage in more than 40 years time.
原委After the founding of the nation, our country relay protection discipline, the relay protection design, the relay manufacture industry and the relay protection technical team grows out of nothing, has pasd through the path in about 10 years which advanced countries half century pass through. The 50's, our country engineers and technicians creatively absorption, the digestion, have grasped the overas advanced relay protection 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 team's establishment. The relay factory introduction has digested at that time the overas advanced relay manufacture technology, has established our country relay manufacturing industry. Thus our country has completed the relay protection rearch, the design, the manufacture, the movement and the teaching complete system in the 60's. This is a time which the mechanical and electrical relay protection prospers, was our countries relay protection technology development has laid the solid foundation.
From the end of the 50's, the transistor relay protection was starting to study. In the 60's to the 80's，it is the times which the transistor relay protection vigorous development and widely ud. Tianjin University and the Nanjing electric power automation plant cooperation rearch 500kV transistor direction high frequency protection the transistor high frequency block system which develops with the Nanjing electric power automation rearch institute is away from the protection, moves on the Gezhou Dam 500kV line , finished the 500kV line protection to depend upon completely from the overas import time.奥沙利文简介
From the 70's, start bad on the integration operational amplifier integrated circuit protection to study. Has formed the completely ries to at the end of 80's 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 90's still were in the dominant position, this was the integrated circuit protection time. The integrated electricity road work frequency conversion quantity direction develops which in this aspect Nanjing electric power automation rearch institute high frequency protected the vital role, the Tianjin University and the Nanjing electric power automation plant cooperation development integrated circuit pha voltage compensated the type direction high frequency protection also moves in multi- strip 220kV and on the 500kV line.
永不放弃英文
Our country namely started the computer relay protection rearch from the end of the 70's, the institutions of higher learning and the scientific rearch courtyard institute forerunner's function. Huazhong University of Science and Technology, southeast the university, the North China electric power institute, the Xian Jiao tong University, the Tianjin University, Shanghai Jiao tong University, the Chongqing University and the Nanjing electric power automation rearch 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 first through the evaluation and in the system the find application, had opened in our country relay protection
自定义history the new page, protect the promotion for the microcomputer to pave the way. In the host equipment protection aspect, the generator which southeast the university and Huazhong University of Science and Technology develop los magnetism protection, the generator protection and the generator? Bank of transformers protection also one after another in 1989、1994 through appraisal and investment movement. The Nanjing electric power automation rearch institute develops microcomputer line protective device also in 1991 through appraisal. The Tianjin University and the Nanjing electric power automation plant cooperation development microcomputer pha voltage co
mpensated the type direction high frequency protection, the Xian Jiao tong University and the Xuchang Relay Factory cooperation development positive quence breakdown component direction high frequency protection also one after another in 1993, in 1996 through the appraisal. Here, the different principle, the different type microcomputer line and the host equipment protect unique, provided one batch of new generation 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 rearch, in microcomputer aspect and so on protection software, algorithm has also yielded the very many theories result. May say started our country relay protection technology from the 90's 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, the control, the survey and the data communication integration development.
2.1 computerizes
香港话Along with the computer hardware swift and violent development, the microcomputer protection hard
i miss you的意思
ware also unceasingly is developing. The original North China electric power institute develops the microcomputer line protection hardware has experienced 3 development phas: 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 enhances 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 automation rearch institute from the very beginning has developed 16 CPU is the foundation microcomputer line protection, obtained the big area promotion, at prent also is studying 32 protections hardware system. Southeast the university develops the microcomputer host equipment protects the hardware also pasd 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 protection, the control, the survey integration microcomputer installment, at prent cooperated with the Zhuhai automatic equipment c
ompany develops one kind of function complete 32 big modules, a module was a minicomputer. Us 32 microcomputers chips only to focus by no means on the precision, becau of the precision the a/d switch resolution limit, is surpasd 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 addressing 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 buffer in CPU.
法语翻译机>comprehensionThe 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 capacity, with other protections, the
