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295Vol.29No.520053PowerSystemTechnologyMar.20051000-3673200505-0081-04TN911.73A510⋅40501122211022062150090APPLICATIONOFREMOTEDIGITALVIDEOMONITORINGANDIMAGERECOGNITIONTECHNOLOGYINPOWERSYSTEMSUNFeng-jie1CUIWei-xin1ZHANGJin-bao2ZHANGXu-dong2XIAOXue-dong21DepartmentofInformationEngineeringNorthChinaElectricPowerUniversityChangpingDistrictBeijing102206China2HeilongjiangElectricPowerCorporationHarbin150090HeilongjiangProvinceChinaABSTRACT:Themaintenanceandtroubleshootingofequipmentsinpowersystemcanbecarriedoutintimebyuseofremotedigitalvideomonitoringandimagerecognitiontechnology.Theremotedigitalvideomonitoringandimagerecognitiontechnologyanditspresentapplicationsituationwerepresented,andthecommonimagerecognizingprocesswasillustrated.Bymeansofimagerecognitiontechnologythesignallightsofequipments,thesevensegmentnumerals,pointerposition,switchpositionandliquidsurfacepositionoftransformeroilcanberecognized.Theauthorsdescribedconcreteprocessofrecognition,pointedouttheprospectofapplyingremotedigitalvideomonitoringandimagerecognitiontechnologyinpowersystems.KEYWORDS:PowersystemVideomonitoringDigitalimageprocessingImagerecognition71MPEG–2MPEG–4H.261H.263MJEPGWebInternetTCP/IPHTTPFTPSMTPIntranetInternet[1,2][3,4][5,6]82PowerSystemTechnologyVol.29No.52[1,7-9]11Fig.1Processingcourseofimagerecognition[9]380~255RGB/[10,11]/37132230~25513070~18518(a)14012010080604020012039587796115134153172191210229248(b)20151050119375573911091271451631811992172352532Fig.2Redgrayhistogramoflighteningandgoingoutofredlamp27773(a)753248[11]3(b)3602514(a)7(b)533753Fig.3Sevensegmentnumeralstructureandimagepre-processedresultof53772958334(a)248(b)4Fig.4Pointerandcourseofimageprocess245(a)(b)(c)(e)(a)(f)(b)(g)(c)5Fig.5Originalchartofswitchandimagepre-processedresult[1]56[1](a)(b)(c)6Fig.6Transformeroilsurfaceandimagepre-processedresult47584PowerSystemTechnologyVol.29No.5[12][1][M]2002[2]AthanasPMAbbottALReal-timeimageprocessingonacustomcomputingplatform[J]IEEEComputer199528(2)16-25[3][J]200323(10)47-50LiShilinYinChengqunShangQiufengetalAmethodofidentifyingchaoticnaturebasedonimagerecognition[J]ProceedingsoftheCSEE200323(10)47-50[4][J]200323(6)195-199LiHanzhouPanQuanZhangHongcaietalAstudyofalgorithmsoftemperaturemeasurementbasedondigitalimageprocessing[J]ProceedingsoftheCSEE200323(6)195-199[5][J]200125(7)56-58TangHuimingZhangJianDesignofvideosurveillancesystemforsubstation[J]AutomationofElectricPowerSystems200125(7)56-58[6]Web[J]200024(5)71-73YuanYiAremotevideosurveillancesystembasedonembeddedWebservertechnology[J]PowerSystemTechnology200024(5)71-73[7][M]1990[8][M]2001[9]TabeiMKobayashiKShizukuishiMAnewCCDarchitectureofhigh-resolutionandsensitivityforcolordigitalstillpicture[J]IEEETransonElectronDevices199138(5)1052-1058[10]MaragosPSchaferRWMorphologicalsystemformultidimensionalsignalprocessing[J]ProceedingsoftheIEEE199078(4)690-710[11]KimJYKimLSHwangSHAnadvancedcontrastenhancementusingpartiallyoverlappedsub-blockhistogramequalization[J]IEEETransonCircuitsandSystemsforVideoTechnology200111(4)475-484[12]Web[J]200327(7)32-35HaoXiaohongSuYuanAWebbasedsubstationremotesupervisorycontrolsystem[J]PowerSystemTechnology200327(7)32-352004-12-211961-1969-1963-1969-1963-46continuedfrompage46CaoJifengAnintroductiontoPingguoTCSCprojectanditsfunctioninChinasouthernpowergrid[J]PowerSystemTechnology200428(14)6-9[2]TCSC[J]200424(6)1-6GuoChunlinTongLuyuanApplicationofTCSCtodamposcillationsinmulti-machinessystem[J]ProceedingsoftheCSEE200424(6)1-6[3]WangBingLiuShengChenChenTCSCstabilizingcontrolstrategybasedonenergyfunctionmethod[A]ProceedingsofInternationalConferenceonPowerSystems(CIGRE)[C]WuhanChina2001158-161[4]SonKMOntherobustLQGcontrolofTCSCfordampingpowersystemoscillations[J]IEEETransactionsonPowerSystems200015(4)1306-1312[5]TCSC[J]200125(4)37-40GeJunTongLuyuanGengJunchengStudyonimpedancestepcharacteristicsofTCSCbasedoncapacitorvoltagesynchronizingsignal[J]AutomationofElectricPowerSystems200125(4)37-40[6]TCSCPID[J]200327(9)29-32YanDongZhaoJianguoWuShouyuanIntegration-switchedPIDcontrolmethodforimpedancecontrolofTCSC[J]PowerSystemTechnology200327(9)29-32[7]——[R]1999[8]TCSC[J]200015(3)66-69HuGuowenZhangDongxiaWangZhonghongetalTheeffectofthesynchronizingsignalandthecircuitdataonthedynamiccharacteristicsofTCSC[J]TransactionsofChinaElectrotechnicalSociety200015(3)66-69[9]TCSC[J]200125(7)18-22GeJunTongLuyuanGengJunchengetalResearchonthyristorconductionanglecharacteristicsintransientprocessofTCSC[J]PowerSystemTechnology200125(7)18-222004-11-301972-1955-