本科毕设论文-—tsc静止无功补偿提高系统电压理论研究.doc

-PAGEIV-PAGEI摘要近年来，由于电网容量的增加，对电网的无功要求也与日增加，同时对电能质量的要求也越来越高。传统无功补偿装置很难达到单位功率因数的补偿，电网无功功率不平衡将导致系统电压的巨大波动，严重时会导致用电设备的损坏，出现系统电压崩溃和稳定破坏事故。TSC是目前广泛使用的无功补偿方式，具有结构简单、费用较低的优点;论文首先介绍了无功功率补偿的意义和现状，无功功率的作用。介绍了TSC基本结构和原理，建立了的数学模型，对稳定性进行了分析。其次，在分析TSC特点后，确定了整体控制策略:TSC以无功功率为主要控制目标，而大部分无功功率由TSC补偿，本文重点介绍TSC静止无功补偿稳定系统电压的研究。为验证本文研究的控制策略的有效性，在MATLAB/SimiLINK环境下对TSC进行了仿真研究。对TSC系统进行了设计，仿真。结果验证了该控制算法的有效性，能增加系统的稳定性，减少电容器动作的次数。通过SIMULINK建立了TSC仿真模型，对仿真波形图进行了分析，结果表明TSC型静止无功补偿在提稳定系统电压方面能满足要求，显示出该无功补偿方式具有较大的应用价值。关键词：无功功率静止补偿稳定电压AbstractInrecentyears,duetotheincreaseofpowercapacity,thereactivepowerdemandsofelectricity,andwithincreasingmoreandmoreisalsohighqualityrequirements.Traditionalreactivecompensationdeviceisdifficulttoachieveunitpowerfactorcompensation,gridreactivepowerimbalancewillcausethesystemvoltagefluctuation,thehugewillcauseseriousdamagetotheelectricequipment,appearsystemvoltagecollapseandstabledestructionaccidents.TSCiscurrentlytheextensiveuseofreactivecompensationmethods,hassimplestructure,lowcostadvantages;Itfirstlyintroducesthesignificanceofpowercompensatingreactivepowerandstatusquo,andreactivepowerfunction.Introducesthebasicprincipleandstructure,TSC,themathematicalmodelwasestablishedforstabilityisanalyzed,anddiscussesthemethodofharmonicrestrainthemselves.Secondly,intheanalysis,determinestheTSCcharacteristicsinoverallcontrolstrategies:TSCofreactivepowerasthemaincontrolgoal,butmostofthereactivepowercompensationbytheTSC,thispaperputsemphasisontheintroductionofTSCstaticreactivecompensationstablesystemvoltageresearch.Inordertovalidatethispaperstudiestheeffectivenessofthecontrolstrategy,InMATLAB/SimiLINKenvironmentTSCsimulationswereperformed.TSCsystemdesign,thesimulation.Resultsverifytheeffectivenessofthecontrolalgorithm,canincreasethestabilityofsystem,reducethenumberofcapacitoraction.Establishedbysimulink.thissimulationmodelforsimulationTSCfluctuations,analyzed,theresultsshowedthattheTSCtypestaticreactivecompensationinthevoltagestabilizingsystemcanmeetdemands,whichshowsthatthere