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**师范学院2012届本科毕业论文0目录摘要................................................................................................................................................2Abstract............................................................................................................................................21：绪论.............................................................................................................................................21.1课题背景............................................................................................................................21.2谐波的产生........................................................................................................................31.3电网中谐波的危害............................................................................................................51.4研究谐波的重要性............................................................................................................52：谐波的限制标准和常用措施.....................................................................................................72.1国外谐波的标准和规定....................................................................................................82.1.1谐波电压标准........................................................................................................82.1.2谐波电流的限制....................................................................................................92.2我国谐波的标准和规定....................................................................................................92.2.1谐波电压标准......................................................................................................102.2.2谐波电流的限制..................................................................................................112.3谐波的限制措施..............................................................................................................123：谐波的检测与分析...................................................................................................................153.1电力系统谐波检测的基本要求......................................................................................153.2国内外电力谐波检测与分析方法研究现状..................................................................153.3谐波的分析......................................................................................................................183.3.1电力系统电压（或电流）的傅立叶分析..........................................................193.3.2基于连续信号傅立叶级数的谐波分析..............................................................194：电力谐波基于FFT的访真.......................................................................................................214.1快速傅立叶变换的简要和计算方法..............................................................................214.1.1快速傅立叶变换的简要......................................................................................214.1.2快速傅立叶变换的计算方法..............................................................................214.2FFT应用举例..................................................................................................................225：结论...........................................................................................................................................28附录：............................................................................................................................................28参考文献：.....................................................................................................................................30致谢：............................................................................................................................................30**师范学院2012届本科毕业论文1基于MATLAB的电力谐波分析学生：指导老师：电气信息工程学院摘要：电力系统的谐波问题早在20世纪20年代就引起人们的注意，到了50年代和60年代，由于高压直流输电技术的发展，发表了有关换流器引起电力系统谐波问题的大量论文。70年代以来，由于电力电子技术的飞速发展，各种电力电子装置在电力系统、工业、交通及家庭中的应用日益广泛，谐波所造成的危害也日趋严重。世界各国都对谐波问题予以充分的关注。本文首先对目前国内外电力谐波检测与分析方法进行了综述与展望，并对电力谐波的基本概念、性质和特征参数进行了详细的分析，给出了谐波抑制的措施。并得出基于连续信号傅立叶级数的各次谐波系数的计算公式，推导了该计算公式与MATLAB函数FFT计算出的谐波系数的关系。实例证明：准确测量各次谐波参数，对电力系统谐波分析和抑制具有很大意义，可确保系统安全、可靠、经济地运行。同时实验结果表明，该法对设备要求不高，易于实现。关键字：MATLAB电力谐波分析HarmonicAnalysisofElectricPowerSystemBasedOnMatlabStudent:Teacher:ElectricalandInformationEngineeringAbstract:Theharmonicproblemofelectricpowersystemhascausedtheattentionofpeoplein1920sand1930s.Until1950s,owingtothedevelopmentofhighvoltagedirectcurrenttransportationelectricitytechnology,peoplepublishedalargenumberofthesesabouttheelectricitypowersystemharmonicproblem,whichcausedbythecurrenttransformdevice.Since1970s,becauseofthespeedlydevelopmentofeletricitypowerelectronicstechnology,thevariouselectricpowerelectronicsdeviceswereappliedextensivelyintheelectricpowersystem,industry,trafficandfamily,buttheharmwhichtheharmoniccreateswasseriousmoreandmore.Manycountryoftheworldallpayattentiontotheharmonicproblem.SummaryandProspectsofthefirstdomesticandinternationalpowerharmonicsdetectionandanalysismethods,andpowerharmonicsofthebasicconceptsofthenatureandcharacteristicparametersofadetailedanalysis,givenaharmonicsuppressionmeasures.Obtainedbase