资源描述：
《基于单片机的低压配电网综合参数测控系统研究大学论文.doc》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、基于单片机的低压配电网综合参数测控系统研究摘要:为保证配电网的安全运行和了解配电网运行的状况，需要对配电网的各种运行参数进行实时监测，并能根据需要及时地将各种测量参数送往调度监控中心，所以目前的低压配电网综合参数测控得到了广泛的应用。本文介绍了一种将无功补偿器和配电网测控仪两套装置合二为一的设计方法，使得装置在投入成本上降低，在管理上更加灵活方便。本测控系统采用电压和电流互感器来转换三相四线制用电参数的交流信号，使用专用电能计量芯片ATT7026来采集转换后的交流信号，将所测量到的参数通过SPI口送往主控制器，并在LCD12864上显示所测的各参数。而本系统采用AT89C52单
2、片机作为主控制器来对整个系统进行控制和监测。同时该测控系统还具有无功功率补偿的作用，配有RS485通信，可以将所测量的参数和信息送往调度中心。本测控系统实现了配电网测控和功率因数校正及无功补，具有结构简单、精度高、抗干扰能力强等特点具有很大的市场潜力。关键字：电压互感器，电流互感器，ATT7026,AT89C52,无功功率补偿，RS485通信第60页共60页Microcontroller-basedlowvoltagedistributionnetworkintegratedmeasurementsystemofresearchAbstract：Inordertoensuret
3、hesafeoperationofdistributionsystemsandknowthestatusofdistributionsystemoperation,thereisaneedthatparametersshouldbemeasuredandmonitoredintime,andthenbesenttothecontrolcenter.Itstimulatesawideapplicationofthemeasuringandcontrolinginstrumentforthelowvoltagedistributionnetwork’sparametersnowad
4、ays.Whencostormanagementistakenintoconsideration,ThispaperpresentsareactivepowercompensatorandthedistributionnetworkMonitortwodevicesintooneofthedesignmethods,inaccordance,thecostoftheinstrumentswillbereducedgreatly,andthemanagementwillbemoreflexible.Themeasuringandcontrolinginstrumentutiliz
5、esvoltageandcurrentinductorstotransformtheACsignalatthethree-phaseandfour-wiresystem,usesthespecialelectricenergycalculationchiptomeasurethetransformedsignal,andthensendsthemeasuredparameterstothemaincontrollerbySPIinterface.ThisinstrumentutilizesAT89C52asthemaincontrollertocontrolandmonitor
6、thewholesystem.Atthesametime,theinstrumentownsthefunctionofthereactivepowercompensationandisequippedwiththeRS485communication,soitcansendmeasuredparametertothecontrolcenter.Theprecisionofthisinstrumenthasalreadyreachednationalindustrystandard.Itisanew-typeinstrumentwhichproofreadpowerfactor,
7、andhastheroleofreactivepowercompensation.Themeasuringandcontrolingsystemenjoysmanyadvantages,suchassimplestructure,highprecisionandstonganti-disturbing,etc.Ithasenormousmarketpotential.Keyword:voltageinductor,currentinductor,ATT7026,PIC16F877,react
