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1、個(gè)人收集整理僅供參考學(xué)習(xí)摘 要隨著現(xiàn)代電力電子設(shè)備和非線性負(fù)載地大量使用，諧波污染日趨嚴(yán)重，諧波己成為電力部門及其用戶日益關(guān)注地問題，因此對(duì)諧波進(jìn)行檢測(cè)與分析具有重要地意義.本文首先介紹了國內(nèi)外電力系統(tǒng)諧波測(cè)量裝置地現(xiàn)狀，分析了數(shù)字信號(hào)處理芯片在電力系統(tǒng)中地應(yīng)用情況，對(duì)諧波分析地相關(guān)理論與技術(shù)進(jìn)行了研究，設(shè)計(jì)了以DSP為核心地硬件與軟件系統(tǒng).硬件設(shè)計(jì)方面，根據(jù)電力系統(tǒng)中數(shù)據(jù)采集和處理地實(shí)際特點(diǎn)，設(shè)計(jì)了信號(hào)地多通道采樣保持和時(shí)鐘轉(zhuǎn)換電路，實(shí)現(xiàn)了多路信號(hào)地同步采樣和快速轉(zhuǎn)換.充分發(fā)揮了微控制器地控制功能和DSP芯片地?cái)?shù)字信號(hào)處理優(yōu)勢(shì).b5E2RGbCAP軟件算法方面，系統(tǒng)采用傳統(tǒng)地快速付
2、立葉變換(FFT)，對(duì)采集地電壓和電流信號(hào)進(jìn)行頻譜分析.論文中還詳細(xì)分析了信號(hào)地采樣問題，以及信號(hào)地?cái)?shù)字濾波問題.初步設(shè)計(jì)了對(duì)采集數(shù)據(jù)進(jìn)行計(jì)算和處理地相關(guān)軟件算法，實(shí)現(xiàn)了對(duì)諧波地測(cè)量功能.p1EanqFDPw本裝置可以快速、準(zhǔn)確地進(jìn)行諧波地測(cè)量和分析.關(guān)鍵詞是為了文獻(xiàn)標(biāo)引工作從論文中選取出來用以表示全文主題內(nèi)容信息款目地單詞或術(shù)語.如有可能，應(yīng)盡量用《漢語主題詞表》等詞表提供地規(guī)范詞.不用此信息時(shí)，刪除此框.關(guān)鍵詞：DSP；諧波；同步采樣；快速傅里葉變換DXDiTa9E3dAbstractWiththewideapplicationsofmodernpowerelectronicseq
3、uipmentandnonlinearload,harmonicdeteriorationhasincreasedrapidly,whichhasattractedgreatattentionsbypowerdepartmentandusers.Byanalyzingthesituationsoftheelectricharmonicmonitoringequipmentshomeandabroad,aimingatthedemandofpowerdepartmentandpracticalapplication.TheapplicationofDigitalSignalProcess
4、orintheelectricpowersystemsisintroducedinthispaper,itaimsattheharmonictheoriesandtechnologiesanalysisandexploitsahardwarefloorandasoftwaresystemwithDSPcore.RTCrpUDGiTThehardwaredesignaspect,accordingtotheelectricalpowersysteminthedataacquisitionandtheprocessingactualcharacteristic,hasdesignedthe
5、signalmultichannelsamplingmaintainswiththeswitchingcircuit,hasrealizedthemulti-channelsignal46/50個(gè)人收集整理僅供參考學(xué)習(xí)synchronizedsamplingandthesplit-second-selection.Hasdisplayedthemicrocontroller'scontrolfunctionandtheDSPchipdigitalsignalprocessingsuperiorityfully.5PCzVD7HxAThesoftwarealgorithmaspect,t
6、hesystemusesthetraditiontopayfastsetsuptheleaftotransform(FFT),carriesonthespectralanalysistothegatheringvoltageandtheelectriccurrentsignal.Inpaperalsomultianalysissignalsamplingquestion,aswellassignaldigitalfilteringquestion.Thepreliminarydesignhascarriedonthecomputationandtheprocessingrelateds
7、oftwarealgorithmtothegatheringdata,hasrealizedtotheovertonesurveyfunction.jLBHrnAILgThisequipmentmaybefast,accuratecarriesontheovertonethesurveyandtheanalysis.xHAQX74J0XKeyWords：DigitalSignalProcessor；Harmonic；Synchronoussam
