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1、中文摘要本课题研究以低压电网无功补偿改造为背景，研究低压无功功率补偿装置，该装置以实时的电网监测数据为依据，采用动态补偿的方式，投切、分段时按国家有关规定限制涌流，补偿断电源功率因数不低于0.95，自动补偿电网中的无功损耗，提高功率因数，降低线损，从而提高电网的负载能力和供电质量。装置采用PQC—100系列无功功率自动补偿控制器，取样物理量为无功电流，交流采样抗电网高次谐波干扰，提取基波电力参数控制投切电力电容器来提高功率因数。电容器接触器则采用CJ19-63/21系列，该接触器带有抑制涌流装置，
2、能有效的减少合闸涌流对电容的冲击和抑制开断时的过电压。关键字：无功补偿，低压,控制器，接触器，电力电容器共24页第23页英文摘要Theresearchofthelowvoltagereactivepowercompensationtransformationasthebackground,researchforlowvoltagereactivepowercompensationdevice,thedevicetothereal-timegridbasedonthemonitoringdata,t
3、hedynamiccompensationmethod,switching,segmentedaccordingtorelevantstateregulationslimittheinrushcurrent,thecompensationoffpowersupplypowerfactorofnotlessthan0.95,automaticcompensationofpowergridreactivepowerloss,improvepowerfactor,reducethelineloss,th
4、erebyincreasingtheloadofthepowergridandpowerquality.DeviceusingPQC-100seriesofreactivepowerautomaticcompensationcontroller,samplingthephysicalquantityforreactivecurrent,ACsamplingofpowersystemharmonicinterference,extractingthefundamentalharmonicpowerp
5、arametercontrolswitchingpowercapacitortoimprovethepowerfactor.CapacitorcontactoradoptsCJ19-63/21series,thecontactorwithinhibitionofinrushcurrentdevice,caneffectivelyreducetheinrushcurrentofcapacitorandtheimpactofinhibitionatbreakingovervoltage.Keyword
6、s:reactivepowercompensation,lowvoltage,controller,contactor,electricpowercapacitor共24页第23页目录中文摘要................................................................1英文摘要................................................................2目录...................
7、.................................................3第1章绪论.............................................................41.1研究背景.......................................................41.2无功补偿的发展状况.............................................51.3本文的研究内容...
8、..............................................6第2章无功补偿的原理...................................................72.1无功补偿的原理.................................................72.1.1无功功率....................................................72.1.2功率因数...
