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ID:13958331
大小:48.24 KB
页数:40页
时间:2018-07-25
《低压电网并联电容动态无功补偿装置设计》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、低压电网并联电容动态无功补偿装置设计辽宁科技大学摘要本论文设计了一种适用于低压电网并联电容的动态无功补偿装置,并介绍了其发展趋势及应用,可满足低压配电网基波无功补偿的快速性和实时性要求,这篇论文主要介绍了无功补偿对电网性能的改善,无功补偿装置的控制算法,以及控制器的软硬件设计原理等。分析了此装置所用的投切装置TSC主电路四种接线方式及这四种方式的特点,详细的阐述了多组电容器的自动分级投切、无功功率快速检测及晶闸管触发电路等关键问题,并提出了解决的方案。在软件方面,系统采用AT89C51单片机,该单片机是美国ATMEL公司生产的低电压,高性能的CMOS8位单片机,具有运算速度
2、高,实时性好的特点;软件则使用汇编语言进行编译;人机操作界面采用LCD显示,显示效果较好;A/D转换采用ADC0809,是一款比较实用的A/D转换装置。该装置可跟踪电网无功功率的变化并自动补偿,实现了无功补偿装置的优化运行,具有体积小、原理简单、智能投切等优点。关键词:无功补偿;单片机;低电压辽宁科技大学DesignoflowvoltagenetworkparallelcapacitydynamicreactivecompesationdevicesAbstractAkindofTSCdynamicreactivepowercompensationdeviceapplica
3、bleformiddleandlow-pressuredistubutionnetworkisdesigned,tointroducethedevelopmenttrendandapplication.Itmeetsrapidandreal-timerequirementoflow-pressuredistributionnetworkfundamentalwavereactivepowercompensation.Thepapermainlyintroducethefollowedparts:theameliorathmofreactivepowercompensatio
4、ndeviceandhardwareandsoftwaredesignofthedevice.ThecharacteristicofTSCmaincircuitfourkindsofmodeofconnectionisanalyzed,andthesolvingmethodofkeyproblemsaboutthyristortriggercircuit,reactivepowerrapiddetectionandautomaticclassingofmult-groupcapacitorsisparticularrepresented.Intheaspectoftheso
5、ftware,thisdevice'shardwarecoreisAT89C51SCM,whichhasmanymeritssuchashighoperatingspeed.ThismonolithicintegratedcircuitisthelowvoltagewhichAmericanATMELCorporationproduces,ahighperformanceCMOS8monolithicintegratedcircuits.Thesoftwareusestheassemblylanguagetocarryonthetranslation.Theman-
6、machineoperationcontactsurfaceusestheLCDdemonstration,thedemonstrationeffectisquitegood;A/DtransformationusesADC0809.ItisasectionofquitepracticalA/Dswitchingdevice.Thisequipmentmaytracktheelectricalnetworkreactivepowerthechangeandtheautomaticcompensation,andthisinstallmenthasthevolumetobes
7、mall.Theprecisionishigh,thepricecomparedtothehighermerit.Keywords:reactivepowercompensation;SCM(SingleChipMicyoco);lowvoltage辽宁科技大学目录摘要.............................................................................................................................
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