地铁杂散电流防护措施的分析-(5565)

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1、万方数据AbstractMetrosystemusesDCpowersupplyleadstostraycurrentleak，thisissuereceivedmuchattention．Straycurrentcorrosionseriouslyaffectthenormalworkingstateofequipmentandtheservicelifeofpipelines，endangeringpeople’slives，itcannotbeignored·Therefore．thepaperresearchesonstraycurrentcorrosionprocess，dis

2、tribution，influencingfactorsandprotectivemeasures．Thenthepaperproposesaprotectmnschemeofstraycurrentf-0ractualproject，SOastoprovideareferenceforthestraycurrentprotectionofmetroconstructioninthefuture。Studvonthedistributionofstraycurrentcanprovidetheoreticalbasisforstraycurrentprotection．Therefore

3、，thepapersetupthemathematicalmodelofsVaycurrentdistribution，andanalyzingitwithMATLABsoftware．BychangingtheparametersofthemodeltOexplorefactorsaffectingthedistributionofstraycurrent，wecangetthegeneralrulesofthestravcurrentdistribution．Straycurrentdistributionisinfluencedbypowersupplymode，Dowerdist

4、ance，traincurrent，railresistance，insulationresistance，etc．Byrationaldesignofthesefactorsinpre—construction，wecaneffectivelyreducethestraycurrentfromthesource·Thepaperintroducesthestraycurrentprotectionmeasuresfromthreeaspects，thenexploretheprotectiveeffectofsourcecontrolmethodandcurrentdrainagene

5、t·Sourcecontrolmethodcalleffectivelyreducetheleakageofstraycurrent，currentdrainagenetcaneffectivelyprotecttheburiedmetalstructure，butalsohassomenegativeeffects，itshouldbecombinedwithmonitoringsystemreasonably．Finally．thepaperdesignsaschemeofstraycurrentprotectioncombinedwiththeQingdaoBlueSiliconV

6、alleyRailExpressactualengineering，includingmeasu。estoimproverailinsulation，currentdrainagenetsettingandmonitoringthecomponentsofthemonitoringsystem．Finally．proposesrequirementsofstraycurrentprotectlonlOrconstructionandmanagement，andprovidesareferencefortheactualconstructionofmetro-Straycurrentpro

7、tectionshouldberunthroughthedesign，construction，operation，maintenanceandotherlinks，involvinganumberofprofessionalfields，allaspectsshouldcoordinateinordertoreducethecorrosionofstraycurrentasmuchaspossible．Keywords：Stray