电气特性测试和故障处理铁路信号基础设备维护课件

电气特性测试和故障处理天津铁道职业技术学院铁路信号基础设备维护（一）室内电气特性测试项目、周期及测试方法

1.测试项目（1）接收器轨入、轨出1、轨出2(主轨道接收、小轨道接收)电压（2）接收器、发送器电源电压（3）发送器功出电压、移出电压（4）模拟网络盒电气参数测试（5）衰耗滤波器电气参数测试（6）载频（7）轨道继电器端电压2.测试周期：第1项值班点每日1次；非值班点1、2项每月不少于2次，电气特性测试和故障处理1.Indoortestitemsandperiod(1)Receivertrackinput,trackoutput1,trackoutput2(maintrackreceivingandsmalltrackreceiving)voltage(2)Powersupplyvoltageforreceiver,transmitter(3)Transmitterpoweroutputvoltage,frequencyshiftoutputvoltage(4)Electricalparameterstestforsimulationnetworkbox(5)Electricalparametersoftheattenuationfiltertest(6)Carrierfrequency(7)Trackrelayterminalvoltage2.TestperiodItem1dutyworkareaistestedonceaday;non-dutyworkareaitems1,2snotlessthan2timesamonth,Item1,2,3,7istestedonceamonth,item4,5,6onceeverysixmonths.ElectricalCharacteristicsTestingandTroubleshooting(二)室外测试项目及周期

1.测试项目（1）发送端调谐匹配单元E1、E2，V1、V2间电压（2）接收端调谐匹配单元E1、E2，V1、V2间电压（3）发送端轨面电压（4）发送端调谐匹配单元(BA)端电压（5）接收端轨面电压（6）入口电流（7）发送端、接收端分路电压（8）补偿电容测试(检测车检测后，本检修周期内可不再测试)（9）调谐匹配单元、空芯线圈、匹配变压器

阻抗测试2.测试周期：第1～7项半年1次；第8、9项一年1次第三节电气特性测试和故障处理Outdoortestitemsandperiod1.Testitems(1)VoltagebetweentransmittertuningmatchingunitE1,E2andV1,V2(2)VoltagebetweenreceivingtuningmatchingunitE1,E2andV1,V2(3)Transmitterrailsurfacevoltage(4)Transmittertuningmatchingunit(BA)terminalvoltage(5)Receivingendrailvoltage(6)Inletcurrent(7)Shuntingvoltagefortransmittingend,receivingend(8)Compensationcapacitancetest(afterthetestvehicletest,itisnolongertestinthemaintenanceperiod)(9)Impedancetestfortuningmatchingunit,hollowcorecoil,matchingtransformer2.TestperiodItems1to7istestedonceeverysixmonths;items8and9onceayear.ElectricalCharacteristicsTestingandTroubleshooting（三）技术标准1.轨道电路的标准分路灵敏度：（1）道床电阻为1.0Ω·km或2.0Ω·km时，分路灵敏度为0.15Ω。（2）道床电阻不小于3.0Ω·km时，分路灵敏度为0.25Ω。2.可靠工作电压：轨道电路调整状态下，收器接收电压（轨出1）不小于240mV，轨道路可靠工作。3.可靠不工作：在轨道电路最不利条件下，使用标准分路电阻在轨道区段的任意点分时，接收器接收电压（轨出1）原则上不大于153mV，轨道电路可靠不工作。4.在最不利条件下，在轨道电路任一处轨面机车信号短路电流，载频为1700Hz、2000Hz、2300Hz时，机车信号短路电流不小于0.5A，2600Hz时不小于0.45A。5.直流电源电压范围：23.0~25.0V。电气特性测试和故障处理Technicalstandards1.StandardshuntingsensitivityofTrackcircuits0.15Ωwhenballastresistanceis1.0Ω-kmor2.0Ω-km.0.25Ωwhenballastresistanceisnotlessthan3.0Ω-km.2.ReliableworkingvalueUnderregulatedstate,thereceiverreceivesavoltage(trackoutput1)notlessthan240mV,andthetrackcircuitworksreliably.3.Reliableno-workingvalueUnderthemostunfavorableconditionsofthetrackcircuit,thereceiverreceivingvoltage(trackoutput1)isinprinciplenotgreaterthan153mVwhenusingthestandardshuntingresistortoshuntatanypointinthetracksection,andthetrackcircuitdoesnotworkreliably.4.Underthemostunfavorableconditions,thelocomotivesignalshort-circuitcurrentatanypointontherailsurfaceofthetrackcircuitisnotlessthan0.50Aat1700Hz