基于fft和小波变换的电力系统谐波检测方法研究

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1、山东科技大学博士学位论文目录Contents1Introduction…………………………………………………………………………………11.1Forword…………………………………………………………………………………………11.2Briefproblemandresearchmeaningaboutpowersystemharmonics……………………………11.3Rresearchconditionofpowersystemharmonicsproblem……………………………………………21.4Mainresearchworkofthispaper…………………

2、…………………………………………………132Theoreticalanalysisofharmonicsdetectionmethod……………………………………162.1Basisofmathematicalanalysis……………………………………………………………………162.2Basisofharmonicsanalysis…………………………………………………………………………192.3Fourieranalysis………………………………………………………………………………………232.4Waveletanalysis………………………………………………

3、………………………………………312.5ComparingofWaveletTransformationandFourierTransformation………………………………443ResearchofintegrationofFFTandWTinharmonicsdetectionalgorithm………473.1Basisofusingwaveletdetectsingularityanditsinstantaneoussignal………………………………473.2IntegrateddetectionmethodofWaveletTransformandFour

4、ierTransform…………………………493.3Wavelet-packettransformalgorithmforharmoniccomponent………………………………………524Designofharmonicsdetectionsystem……………………………………………………574..1Generaldesignofhardwarecircuit……………………………………………………………………574.2Designofhardwarecircuit……………………………………………………………………………584.3Designofsoftwa

5、re……………………………………………………………………………………655Simulationforpowersystemharmonicsdetection………………………………………705.1Constructingtheharmonicssignalmodel……………………………………………………………705.2SimulationresultofFFT………………………………………………………………………………755.3SimulationanalysisofWaveletTransform……………………………………………………………785.4Simul

6、ationanalysisfortheintegrationofWaveletandFourierTransform…………………………896Conclusionandinsufficiency…………………………………………………………94AppendixdesignofSCMcontrolmodule………………………………………………961Humancomputerinterfacemodule……………………………………………………………………962Communicationandclockcircuit………………………………………………………………………9

7、83ControlchipofSCManditscommunicationwithDSP………………………………………………100Acknowledgments…………………………………………………………………………101MainWorkAchievementoftheAuthorduringWorkingonDoctorPaper…………102MainReferences……………………………………………………………………103山东科技大学博士学位论文绪论1绪论1.1引言众所周知，电力系统已成为现代社会的基石，如今随着电力市场环境的形成，供电也已经