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1、渤海船舶职业学院毕业(论文))摘要在电力系统中,继电保护是保证电力系统安全运行和提高电能质量的重要工具,而且,电力系统的规模在不断扩大,用户对电能质量的要求也在不断提高。因此,对继电保护的要求也越来越高。高频保护是110kV及以上输电线路的主保护,也是高压电网保护的第一道防线,能够对全线路故障实现无时限切除,这是高频保护的重大优点,所以,在超高压电网的稳定措施中高频保护受到高度重视。本次的设计是110kV线路微机高频保护。本文首先简要介绍了电力系统微机继电保护的发展历史、现状、技术特点及其发展方向。接着详细论述了110KV线路微机继电保护的构成以及各个部分的工作原理,设计内
2、容包括三大部分:硬件电路设计,软件部分设计和高频保护参数计算及动作值整定。和件结构够硬件电路主要由CPU主系统、数据采集系统和开关量输入/输出系统构成,软件设计,主要包括高频保护的主程序、中断服务程序和故障处理程序设计,软硬件结合实现保护功能。关键词:继电保护;微机保护;高频距离保护;高频零序保护IV渤海船舶职业学院毕业(论文))AbstractIntheelectricalpowersystem,therelayprotectionisguaranteedtheelectricalpowersystemsafeoperationandimprovestheelectric
3、alenergyquality,moreover,theelectricalpowersystemscaleisexpandingunceasingly,theuserunceasinglyisalsoenhancingtotheelectricalenergyqualityrequest.Therefore,moreandmoreisalsohightotherelayprotectionrequest.Thehighfrequencyprotectionis110kVandabovetransmissionlinehostprotection,alsoisthefirs
4、tdefenselinewhichthehightensionlineprotects,canrealizethenon-timelimitexcisiontotheentirelinefault,thisisthehighfrequencyprotectionsignificantmerit,therefore,receivesintheultrahighvoltageelectricalnetworkstablemeasureintermediatefrequencyprotectiontakeshighly.Thistimedesignisthe110kVlinemi
5、crocomputerhighfrequencyprotection.Thisarticlefirstwasbriefintroducedtheelectricalpowersystemmicrocomputerrelayprotectiondevelopmenthistory,thepresentsituation,thetechnicalcharacteristicandthedevelopmentdirection.Thenindetailelaboratedthe110KVlinemicrocomputerrelayprotectionconstitutionasw
6、ellaseachpartofprincipleofwork,thedesigncontentincludingthreemajorparts:Hardwarecircuitdesign,softwarepartdesignandhighfrequencyprotectionparametercomputationandmovementvalueinstallation.HardwareelectriccircuitmainlybyCPUhostsystem,dataacquisitionsystem,withswitchquantityinput/outputsystem
7、constitution,thesoftwaredesignmainlyincludesthehighfrequencyprotectionthemasterroutine,theinterruptserviceandthebreakdowndisposalproceduredesign,thesoftwareandhardwareunionrealizationprotectionfunction.Keywords:Relayprotection;Microcomputerprotection;Highfrequ