摘要随着经济的发展和人们生活水平的提高，各行各业对供电可靠性和供电质量提出了更高的要求。由于配电网处于电网的末端，用户多为低压用户，许多用电器的功率因数很低，且不带补偿装置，这给电网带来很大的功率负担和额外线损，为了维护电力系统稳定、保证电能质量和安全运行，对电网末端变压器进行就地无功补偿很有必要。本文利用专用三相电能专用芯片ATT7022B为核心构成的采样控制器，实时检测电网的电压、电流，有功、无功、功率因数，根据用电负荷情况，通过51单片机控制电容器组的自动投、切，实现无功功率的无功补偿，并利用12232液晶显示器显示当前的有功、无功、功率因数等参数。关键字：功率因数，无功补偿，ATT7022B，单片机IAbstractAlongwitheconomyofthedevelopmentandpeopleliveahorizontalexaltation,everytradeputforwardahigherrequesttothepowersupplycredibilityandthepowersupplyquality.Inordertogoingtogetherwiththebitterendthatthechargedbarbedwirenetisplacedinchargedbarbedwirenet,customermuchislow-pressurecustomer,manypowersfactorswhichuseanelectricappliancesareverylow,anddon'ttakerepairdevice,thisbringschargedbarbedwirenetverybigpowerburdenwithadditionalline,forthesakeofmaintenanceelectricpowersystemstability,assuranceelectricpowerqualityandsafetycirculate,tothechargedbarbedwirenetbitterendtransformercarryonrightonthespotwithoutachievementtherepairhasanecessityverymuch.ThistextmakesuseofappropriationthreemutuallythechipATT7022oftheelectricpowerappropriationBiscoreconstituteofsamplecontroller,solidhourexaminetheelectricvoltage,electriccurrentofchargedbarbedwirenet,haveagreatachievement,havenoachievement,powerfactor,accordingtouseelectricitytocarryacircumstance,pass51singleslicemachinecontrolcapacitorsetofautomatichurl,slice,carryouttohavenoachievementpowerofwithoutachievementcompensate,andmakeuseof12232liquidcrystaldisplaysmanifestationtohaveagreatachievementatpresent,havenoachievement,powerfactoretc.Keywords:PowerFactor,VarCompensate,ATT7022B,SingleChipMicrocomputerII目录1绪论................................................................................................11.1无功补偿的意义..........................................11.2静止无功补偿技术的发展..................................21.3课题来源及主要研究内容..................................42功率因数........................................................................................62.1功率因数的定义...........................................62.2功率因数的意义...........................................73系统的芯片介绍............................................................................113.1DSP(ATT7022B)芯片介绍...................................113.2单片机介绍..............................................163.3LCD液晶显示器..........................................204硬件的系统设计..........................................................................274.1数据采集系统的设计.......................................274.2控制器的硬件设计.........................................304.3系统的特点...............................................375总结与展望..................................................................................395.1总结.....................................................395.2展望.....................................................39参考文献..........................................................................................40致谢...............................................................................................
