-毕业设计外文翻译材料学 院：专 业：学生*：指导教师：电气与电子工程学院电气工程及其自动化 Relay protection development present situationAbstract:Reviewedourcountry electrical power system relay protection technological development process, has outlined the microputer relay protection technology achievement, propose the future relay protection technological development tendency will be: puterizes, networked, protects, the control, the survey, the data munication integration and the artificial intellectualization.Key word:relay protection, present situation development, future development1 relay protection development present situationThe electrical power system rapid development to the relay protection proposeunceasingly the new request, the electronic technology, puter technology and the munication rapid development unceasingly has poured into the new vigor for the relay protection technology development, therefore, the relay protection technology is advantageous, has pleted the development 4 historical stage in more than 40 yearstime.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 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 protection equipment performance and the movement technology , pleted to have the deep relay protection theory attainments and the rich movement e*perience relay protection technical team, and grew the instruction function to the national relay protection technical teams establishment. Therelay factory introduction has digested at that time the overseas advanced relay manufacture technology, has established our country relay manufacturing industry. Thus our country has pleted the relay protection research, the design, the manufacture, the movement and the teaching plete system in the 60s. This is a time which the mechanical and electrical relay protection prospers,was ourcountries 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，itis the times which the transistor relay protection vigorous development and widely used. 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 automation research institute is away from the protection, moves on the Gezhou Dam 500kV line , finished the 500kV line protection to depend upon pletely from the overseas import time.From the 70s,start based on the integration operational amplifier integrated circuit protection to study. Has formed the pletely 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 integrated 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 plant cooperation development integrated circuit phase voltage pensated the type direction high frequency protection also moves in multi- strip 220kV and on the 500kV line.Our country namely started the puter relay protection research from the end of the 70s, the institutions of higher learning and the scientific research courtyard institute forerunners function.HuazhongUniversityof Science and Technology, southeast the university, the North China electric power institute, the *ian Jiaotong University, the Tianjin University, Shanghai Jiaotong University, the Chongqing University and the Nanjing electric power automation research institute one after another has all developed the different principle, the different pattern microputer protective device. In 1984 the original North China electric power institute developed the transmission line microputer protective device first through the evaluation and in the system the find application, had opened in our country relay protection history the new page, protect the promotion for the microputer to pave the way. In the host equipment protection aspect, the generator which southeast the university and Huazhong University of Science and Technology develop loses magnetism protection, the generator protection and the generatorBankof transformers protection also one after another in 1989、1994 through appraisal and investment movement. The Nanjing electric power