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1、三相异步电机保护器设计目录1绪论21.1三相异步电动机保护发展现状21.2电动机保护的发展趋势21.3微机保护装置的特点31.3.1性能优越31.3.2可靠性高31.3.3灵活性强31.3.4调试维护工作量小31.3.5经济性好41.3.6多功能化和综合应用42硬件总体设计及各部分说明52.1方案论证52.2电机保护原理52.1.1电动机故障情况分析52.2.2电动机综合保护分析63硬件设计73.1装置硬件的总体结构73.2硬件电路设计83.2.180C196MC单片机83.2.2系统时钟的选择93.2.3传统的反时限过负荷保护10
2、3.2.4存储器的扩展103.2.5数据采集103.3硬件电路各模块的分析123.3.2通讯模块133.3.4负序反时限保护模块144软件系统设计154.1系统软件设计154.2感应电动机微机保护方案16WangGuozhenoncesaid:"sincethechoiceThedistance,thenconsidersonlythetrialsandhardships".Sincewehavechosentodothepartymembersandcadres,itisnecessarytoletfaithflagflutter
3、intheheartsofthehighestposition,alwaysadheretoadhereto,tenacity,clankofthesteelframeandsincerefeelings,interpretationoftheadvanced,shine,andstrivetodoaletpartyheart,peoplearesatisfiedwiththepublicservantsofthepeople.InaccordancewiththerequirementsofthemunicipalPartycom
4、mittee,todaywecalledthecity'sproductionsafetyresponsibilitycollectiveinterviews,mainlyisinformedoftherecentsafetyHawthorncheckfoundmanyhiddendangersofaccidents,tofurtherreinforcetheresponsibility,grasptheproblemrectificationwork.AftertheoccurrenceoftheTianjinPort8.12"a
5、ccident,central,provincialandmunicipalleadersattachgreatimportancetorepeatedlymadeinstructions,requirementsofPartycommitteesandgovernmentsatalllevelsshouldfirmlyestablishtheconceptofsafedevelopment,adheretotheinterestsofthepeoplefirst,alwaysputsafetyinthefirstplace,and
6、earnestlysafeguardthepeople'slifeandpropertysafety.Wemustresolutelyimplementtheresponsibilitysystemforproductionsafety,effectivelysothatthepartyandgovernmentwithresponsibility,apairofresponsibility,derelictionofdutyresponsibility.Not三相异步电机保护器设计4.2.1起动时间过长保护164.2.2堵转保护1
7、64.2.3短路保护164.2.4低电压保护164.3采样数据的处理164.3.1有效值的计算174.3.2正序电流和负序电流的获取及计算174.4参数设定模块194.5程序代码214.6系统软件抗干扰设计22结论23结束语24参考文献25致谢26附录27WangGuozhenoncesaid:"sincethechoiceThedistance,thenconsidersonlythetrialsandhardships".Sincewehavechosentodothepartymembersandcadres,itisnece
8、ssarytoletfaithflagflutterintheheartsofthehighestposition,alwaysadheretoadhereto,tenacity,clankofthesteelframeandsinc
