【正文】 oes 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 microputer protection also is from 8 cpu, develops to take the labor controlling machine core partially as the foundation 32 microputers protection. The Nanjing electric power automation research institute from the very beginning has developed 16 cpu is the foundation microputer line protection, obtained the big area promotion, at present also is studying 32 protections hardware system. Southeast the university develops the microputer host equipment protects 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 microputer line protection, in 1988 namely started to study take 32 digital signals processor (dsp) as the foundation protection, the control, the survey integration microputer installment, at present cooperated with the Zhuhai Jin automatic equipment pany develops one kind of function plete 32 big modules, a module was a miniputer. Uses 32 microputers chips only to focus by no means on the precision, 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。s , the institutions of higher learning and the scientific research courtyard institute forerunner39。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 9039。s in are the times which 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 power automation research institute is away from the protection, moves on the Gezhou Dam 500 kv line , finished the 500kv line protection to depend upon pletely from the overseas import time. From the 7039。s, the transistor relay protection was starting to study. In the 6039。s establishment. The acheng relay 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 6039。西安科技大學(xué)高新學(xué)院外文翻譯 1 西安科技大學(xué)高新學(xué)院 畢業(yè)設(shè)計 （ 論文 ） 外文翻譯 學(xué)生姓名： 院（系）： 專業(yè)班級： 指導(dǎo)教師： 完成日期： 西安科技大學(xué)高新學(xué)院外文翻譯 2 西安科技大學(xué)高新學(xué)院外文翻譯 1 第 1 頁 共 11 頁 Relay protection development present situation [ Abstract ] reviewed our country electrical power system relay protection technological development process, has outlined the microputer relay protection technology achievement, proposed the future relay protection technological development tendency will be: Computerizes, worked, protects, the control, the survey, the data munication integration and the artificial intellectualization. [ Key word ] relay protection present situation development， relay protections future development 1 relay protection development present situation The electrical power system rapid development to the relay protection proposed unceasingly 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 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 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 5039。s, 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 experience relay protection tec hnical team, and grew the instruction function to the national relay protection technical team39。s. 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 5039。s to the 8039。s, started based on the integration operational amplifier integrated circuit protection to study. Has formed the plete series to at the end of 8039。s still were in the dominant position, this was the integrated circuit protection time. The integra西安科技大學(xué)高新學(xué)院外文翻譯 2 第 2 頁 共 11 頁 ted electricity road work frequency conversion quantity direction develops which in this