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ID:29055099
大小:877.54 KB
页数:63页
时间:2018-12-16
《《继电保护装置论》word版》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、摘要现代电力系统中,继电保护装置是保证电力系统安全运行和提高电能质量的重要工具。随着变电站综合自动化技术的发展及其推广应用,微机保护装置已成为电力部门的普遍要求。本文的主题是35KV线路保护装置设计,首先介绍了研究该装置的目的和意义、国内外的发展情况,并详细介绍了保护装置的原理与算法。随后,本文详细介绍了装置所采用的单片机(AT89C52)和各辅助芯片的功能作用,以及相关电路的设计。本装置硬件包括数据采集系统、开关量输出电路、键盘显示电路、通讯电路以及供电电源等。最后,针对本文的硬件编写了系统的软件部分,包括按键和液晶显示系统软件、串口通讯软件和保护功能程
2、序软件,实现了对35KV线路的三段式过电流保护和方向电流保护功能。关键词微机保护线路保护单片机AbstractInthemodernpowersystem,protectiverelayingequipmentisofimportancetoguaranteethesafetyofthesystemoperationandimprovepowerquality.Withthedevelopmentoftheintegratedautomationtechnologyofsubstationsanditsapplication,microcomputerpr
3、otectioninstallationhasbecometheuniversaldemandtothepowersector.Thethemeofthispaperisaboutthedesignof35KVlineprotectionofthedevice,firstlyitintroducesthepurposeandmeaningofthisresearchonthedevice,thedevelopmentbothathomeandabroad,andtheprincipleandalgorithmoftheprotectivedevice.Th
4、en,itintroducesthefunctionsofthesinglechipmicrocomputer(AT89C52)andeachcompanionchipusedbythedevicerelatingtoitscircuitdesign.Thehardwareincludesdataacquisitionsystem,switchingoutputcircuit,keyboarddisplaycircuit,communicationcircuit,powersuppliesandsoon.Finally,thesoftwaresystemw
5、hichiswrittenaccordingtointhispaperthehardwareofwrittenpartsincludesthekeysandliquidcrystaldisplaysystemsoftware,serialcommunicationsoftwareandprotectionfunctionprogramsoftware,thusrealizingthethree-stepovercurrentprotectionandthedirectionofcurrentprotectionfunctionofthe35KVlines.
6、KeywordsMicrocomputerprotectionLineprotectionSinglechipmicrocomputer目录摘要.......................................................................................................................IAbstract.................................................................................
7、................................II第1章绪论............................................................................................................11.1研究的目的和意义................................................................................11.2国内外发展情况...............................
8、.................................
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