Comparison of correlation analysis and DTW used in distribution network topology verification

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1、2018ChinaInternationalConferenceonElectricityDistributionTianjin,17-19Sep.2018ComparisonofcorrelationanalysisandMSDusedindistributionnetworktopologyverificationZeyangTang,Member,IEEE,KunpengZhou,KanCao,DefuCai,XiaodongYu,LiWan,YuzeRaoandJunhuiXinproblemofver

2、ifyingandupdatingDNTinformationintheirAbstract—Manypowerutilitieshaveproblemswiththerecords.qualityofdataaboutdistributionnetworktopology.ThisThetraditionalmanualwayofverifyingDNTisaffectstheoperationandmaintenanceofsmartgrid,includingtime-consumingandlabor-i

3、ntensive.Theoperationdataoutagemanagementandlineloss.Theoperationdata,suchasproducedbydistributionnetworkcannotonlydirectlyreflectvoltagedatawhosesimilarityhasbeenanalyzedtoverifytheoperationstateofdistributionnetworkbutcanalsodistributionnetworkconnectivity.

4、Themostcommonlymethodindirectlyreflectthedistributionnetworktopology.Therefore,usedtoevaluatesimilarityiscorrelationanalysis.Inthispaper,researchershaveproposeddata-drivenmethodstosolvethecorrelationanalysisandmorphologysimilaritydistance(MSD)problem.W.Luan[5

5、-8]hasproposedamethodofusingthehavebeencomparedwhenusedindistributionnetworkmeasurementdatatoverifythetopologyofthedistributionconnectivityverification.Theresultsshowthatthedatashouldnetwork.Inordertoverifythetopology,thesingle-phasebenormalizedwhenMSDisused.

6、Fourcasestudieshavebeenvoltageisusedtocalculatethesimilarity.J.Geng[9-10]hascarriedoutinordertocomparetheperformanceofthetwoproposedthemethodbasedondiscreteFréchetdistanceandmethods.Resultsshowthatwhenthevoltagelossof10kVclippingneighbormethod,whichisusedtoch

7、eckthetopologyfeederislarge,theperformanceofcorrelationanalysisisbetteroflowvoltagedistributionnetwork.ThistypeofdistributionthanMSD.Whenthevarietyrangeofthevoltagecurvesisnetworktopologyverificationismainlyusedtoverifywhichsmall,theperformanceofMSDisbetterth

8、ancorrelationsubstationareathelow-voltageusersbelongto.L.Chen[11-12]analysis.Whenthevoltagecurveshavecatastrophepoints,thehasproposedtopologyverificationtechnologybyusingtheperformanceof