自动排流柜的设计

122211(1.,221008,;2.,710016,,,),,,,,;;;U284.26+1DesignoftheAutomaticDrainageCabinetZhangDongliang,LiFeng,LiBaoen,ZhangYabin,DengWei,WangZhihongAbstractThestraycurrentoccursintherunningofmetrotrains,andoftencausesseriouscorrosionofthestructuralsteelreinforcementofmetrotunnelandtheundergroundmetallicfa2cilities.Inthispaper,thehazardofstraycurrentandthework2ingprincipleoftheautomaticdrainagemethodareintroduced.Onthisbasis,thedesignofanautomaticdrainagecabinetisdiscussed,whichcouldbeusedindependentlyortogetherwiththeautomaticmonitoringsystemforstraycurrent,aimingatdecreasingitshazardtothelowestpossiblelevel.Keywordsrailtransit;straycurrent;automaticdrainage;in2ductiveresistanceFirst2authorsaddressSchoolofInformation&ElectricalEngineering,ChinaUniversityofMiningandTechnology,221008,Xuzhou,China,,[1],[1-5],,,11.1,106,15km11995650km1.250m,,,,EN50162,0.1V,1000mm222.11:DR,,11672008,,,:92V,,,,1600mm2,0.16/km;60kg/m0.026/km,0.013/km2000A,260A,,2102,,V,()V(VV),0.5V,22.2,,V0.5V,,0.5V,,,,V,,V0.5VVR(3)33,4:2V;Rg;R;IGBT;I4IGBT,;IGBT,=t1/T:T=t1+t2Idx=(I1t1+I2t2)/T:TIGBT;t1IGBT;I1IGBT,I1=2V/Rg;26t2IGBT;I2IGBT,I2=2V/(Rg+R)Rdx=2V/IdxRx=Rdx-Rg,IGBT,=1,Rx=0;=0,Rx=R,,IGBT,,0.5V,,,,,IGBT,,4,55:D,,,()R2,,IGBT,,D,R1,,IGBT,IGBT,,B,T,,:;IGBT,IGBT,;:0.5V,,;,,IGBT,,,,,5,,,,,,,[1].[M].:.1986.[2].[J].,2003(4):48.[3].[J].,2004(6):53.[4].[J].,2007(6):64[5],.[J].,1996(1):32.[6]CJJ491992[S].[7]EN50162ProtectionagainstcorrosionbystraycurrentsfromDCsystems[S].2003.(:2008-03-16)367