无功补偿论文PAGE-34-PAGEIII无功补偿论文专业：电气工程及其自动化摘要本课题研究以低压电网无功补偿改造为背景，研制了一种低压无功功率补偿控制器。作为一种非实时的无功补偿装置，该装置以定时的电网监测数据为依据，以城镇低压网(220V)的无功补偿为对象。本文主要研究了无功补偿对电网性能的改善，以及控制器的软硬件的配置。系统采用单片机，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，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AbstractWhatthisarticlestudiesisbasedonthealterationofreactivepowercompensationoflowvoltage,thendesignanequipmentforreactivepowercompensationoflowvoltage.Asakindofreactivepowercompensation,thisequipmentisbasisontheelectricalnetworkmonitordata,andprovidesreactivepowerforcity’slowvoltagepowergrids.Thisthesishasdiscussedtheimportanceofthereactivepowercompensationforthepowergrids,andintrodudedthehardwareandsoftwareofthecontroller.Thisdevice'shardwarecoreisAT89C51SCM,whichhasmanymeritssuchashighoperatingspeed.ThismonolithicintegratedcircuitisthelowvoltagewhichAmericanATMELCorporationproduces,ahighperformanceCMOS8monolithicintegratedcircuits;Thesoftwareusestheassemblylanguagetocarryonthetranslation;Theman-machineoperationcontactsurfaceusestheLCDdemonstration,thedemonstrationeffectisquitegood;A/DtransformationusesADC0809,itisasectionofquitepracticalA/Dswitchingdevice.Thisequipmentmaytracktheelectricalnetworkreactivepowerthechangeandtheautomaticcompensation,andthisinstallmenthasthevolumetobesmall,theprecisionishigh,thepricecomparedtothehighermerit.KeyWords:reactivepowercompensation,SCM(SingleChipMicyoco),lowvoltagePAGE-33-目录TOC\o"1-2"\u摘要PAGEREF_Toc200532942\hIAbstractPAGEREF_Toc200532943\hI目录PAGEREF_Toc200532944\hII第一章绪论PAGEREF_Toc200532945\h-1-1．1研究背景PAGEREF_Toc200532946\h-1-1．2无功补偿装置的发展状况PAGEREF_Toc200532947\h-2-1．3本课题主要研究的内容PAGEREF_Toc200532948\h-4-第二章无功补偿的原理PAGEREF_Toc200532949\h-6-2．1无功补偿的原理PAGEREF_Toc200532950\h-7-2．2低压电网中的几种无功补偿的方式PAGEREF_Toc200532951\h-9-2．3确定补偿容量的几种方法PAGEREF_Toc200532952\h-