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《Research on the Loop Closing Operation Analysis System inRadial Medium VoltageDistributionNetwork》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、CICED2008TechnicalSession3Protection,control,communicationandautomationofdistributionnetworkS3-03CP1273ResearchontheLoopClosingOperationAnalysisSysteminRadialMediumVoltageDistributionNetworkJiYafei,ZhaoJiangheChinaElectricPowerResearchInstitute,HaidianDistrict,Be
2、ijing100192,ChinaAbstract:Tothephysicalcircumstancesoftheradialmediumanalysissystemcanbedevelopedtocalculateandanalyzethevoltagedistributioninthespecifiedcity,thispaperpresentsloopcurrentanditseffectbeforetheloopclosingoperation,thepropersolutionsoftheloopclosing
3、operationanalysistheproperdecisionsofdispatcherscanbemucheasiertosystembasingontheanalysisandresearchesofthemake,theequipmentoverloadandprotectiontripscausedbydistributionstructureandtheexistedSCADA/EMSandGIStheloopclosingoperationcanbeavoided,thusthesafetyandsys
4、tems.Thespecificdesigningschemesfortheloopclosingreliableofpowersupplycanbeimproved,andthelossduetooperationanalysissystemaregiven.TheCIMmodelbasedonpoweroutagescanbereduced.IEC61970/61968standardisintroducedtocompletethedataReference[l]introducedthedevelopmentan
5、dexchangebetweentheloopclosingoperationanalysissystemapplicationoftheloopclosingoperationsysteminandtheexistedsystems.Intheloopclosingoperationanalysistwo-directionpowersupplynetworks.Theloopflowsystemdesigningscheme,theloopclosingpowerflowcalculationisthecoremod
6、uleofloopclosingoperationcalculationmodelisthemostimportantpart,whiletheloopsystem.Intheradialmediumdistribution,theresistancerateclosingpowerflowcalculationmethodisthecoreinthe(R/X)oflineismuchlargerthanthatintransmission,thusthemodule,Thispapercalculatestheloop
7、closingpowerflowconditionnumberofJacobimatrixislarger.Theastringencycalculationwiththemethodofthesuperpositionofpoweroftraditionalpowerflowcalculationisnotexcellentenough.flowbeforeandafterloopclosingoperations,whichleadstoReference[2-5]introducedsomenowandimprov
8、edmethodsabetterconvergenceproperty.fortheradialdistributionwiththesecharacters,ofwhichtheeffectisfavorable.Keywords:RadialMediumVoltageAimingatthepracticalcon
