升压站受电调试方案(新修改)

BALCOEXPANSIONPROJECT4300MWTHERMALPOWERPLANTENERGIZINGSCHEMEOFSWITCHYARDANDSTATION印度BALCO扩建4300MW燃煤电站工程升压站及启备变受电调试方案目录CONTENTS1受电目的PURPOSE2受电范围SCOPEOFENERGIZING3受电前应该具备条件PREREQUISITESOFENERGIZING4受电步骤ENERGIZINGPROCEDURE5注意事项NOTICE6附录APPENDIX电气受电一次系统示意图SKETCHMAPOFENERGIZEDSYSTEM1目的PURPOSE11检查受电系统的一、二次电气设备绝缘，并确认其合格。检查其系统的控制、保护联锁和信号装置，确认其动作可靠。检查设备的运行情况和系统的性能，发现并消除可能存在的缺陷。保证系统和设备能够安全正常地投入运行。CHECKANDCONFIRMTHEINSULATIONOFEQUIPMENTSOFENERGIZEDSYSTEMCHECKTHECONTROL,PROTECTIVEINTERLOCKANDSIGNALDEVICES,ANDCONFIRMTHEACTIONMUSTBERELIABLEDISCOVERANDTHENELIMINATETHEDEFECTMIGHTEXISTENSURETHESYSTEMANDEQUIPMENTSCANBEPUTINTOOPERATIONSAFELY2受电范围SCOPEOFENERGIZING21220KV、母线以及与母线相连的所有元件，包括所有隔离开关、CVT、CT、避雷器。220KV、MAINBUSANDTRANSFORMERBUSANDALLCOMPONENTSCONNECTEDTOBUSBAR,INCLUDINGALLDISCONNECTINGSWITCHES,CVT,CTANDLIGHTNINGARRESTERS22母联断路器、隔离开关BUSCOUPLER,BUSDISCONNECTINGSWITCHES231启动/备用变压器、隔离开关，1启/备变CT和断路器。STANDBYTRANSFORMER1,DISCONNECTINGSWITCHES,CTOFSTANDBYTRANSFORMER,CIRCUITBREAKERS3受电前应该具备的条件PREREQUISITESOFENERGIZING31电气应具备的条件ELECTRICALPREREQUISITES311升压站范围内所有220KV断路器、隔离开关、避雷器、接地刀闸安装和单体试验工作完成。THEINSTALLATIONANDINDIVIDUALTESTOFALL220KVCB,DISCONNECTINGSWITCHES,LIGHTNINGARRESTERS,EARTHINGSWITCHESMUSTBECOMPLETED312220KV线路设备、220KV、母及相连的元件安装结束，母联断路器及相连元件安装结束。THEINSTALLATIONOF220KVLINEEQUIPMENTS,220KVMAINBUSI,II,TRANSFERBUSANDRELEVANTCOMPONENTSMUSTBECOMPLETEDTHEINSTALLATIONOFBUSCOUPLERANDRELEVANTCOMPONENTSMUSTBECOMPLETED313升压站范围内所有CT和CVT安装和单体试验工作完成。THEINSTALLATIONANDINDIVIDUALTESTOFALLCTANDCVTWITHINSWITCHYARDMUSTBECOMPLETED314升压站蓄电池组安装和试验工作完成。THEINSTALLATIONANDTESTOFSWITCHYARDBATTERYUNITMUSTBECOMPLETED315升压站继电器保护装置的安装和单体静态校验工作完成，相关继电保护的整定已按有关通知单整定完毕，试验记录完整，数据准确。THEINSTALLATIONANDINDIVIDUALTESTOFSWITCHYARDRELAYPROTECTIONSMUSTBECOMPLETEDVALUESETOFRELEVANTPROTECTIONSMUSTBECOMPLETEDASPERREQUISITIONTHETESTINGRECORDMUSTBECOMPLETEANDACCURATE316升压站内故障录波装置安装和单体试验完毕。THEINSTALLATIONANDINDIVIDUALTESTOFSWITCHYARDFAULTRECORDERMUSTBECOMPLETED317升压站内相关电度表、测量仪表、变送器校验合格，具备投运条件。CALIBRATIONOFRELEVANTENERGYMETERS,MEASURINGMETERS,TRANSMITTERSMUSTBECOMPLETEDANDQUALIFIEDFOROPERATION318220KV升压站测量控制系统装置安装和单体试验完成。THEINSTALLATIONANDINDIVIDUALTESTOFSWITCHYARDMEASURECONTROLSYSTEMMUSTBECOMPLETED319升压站二次回路电缆敷设和接线工作结束。CABLELAYINGANDWIRINGOFSWITCHYARDSECONDARYCIRCUITMUSTBECOMPLETED3110受电区域应做好安全隔离措施。ISOLATIONMEASURESSHOULDBEEXECUTEDINENERGIZINGAREA3111受电一次设备的相序、相色标识明确，命名编号齐全。受电区及受电设备应有明显的警戒标志。THEPHASESEQUENCEANDCOLORMARKSOFPRIMARYEQUIPMENTSENERGIZEDMUSTBECLEAR,THENAMEPLATESANDSERIALNUMBERMUSTBECOMPLETEDTHERESHOULDBEOBVIOUSNAMEPLATESFORENERGIZINGAREAANDEQUIPMENTS3112全厂接地系统已施工完毕，接地电阻符合要求。各受电一、二次设备的绝缘电阻经测试，符合规程的要求，并做好记录备查。THECONSTRUCTIONOFGROUNDINGSYSTEMMUSTBEFINISHED,ANDTHEGROUNDINGRESISTORSSHOULDFULFILLTHEREQUIREMENTTHEINSULATINGRESISTANCEOFPRIMARYANDSECONDARYEQUIPMENTSENERGIZEDMUSTBETESTEDANDMEETTHEREQUIREMENTOFREGULATIONITMUSTBERECORDEDFORFUTUREREFERENCE3113直流屏、UPS盘柜、升压站MCC柜等具备投运条件。DCCABINETS,UPSCABINETS,SWITCHYARDMCCCABINETSETCSHOULDFULFILLTHEREQUIREMENTOFOPERATION3114受电区域内的二次回路接线校核工作完成。CHECKOFSECONDARYWIRINGWITHINENERGIZINGAREAMUSTBECOMPLETED3115受电范围内电气二次回路的调试工作应完成，测量控制系统、继电保护系统以及报警信号等经传动试验均正确可靠。THEINSPECTIONANDCONFIRMATIONOFELECTRICSECONDARYCIRCUITWITHINENERGIZINGAREAMUSTBECOMPLETEDTHEMEASURE,RELAYPROTECTIONSANDALARMSIGNALSSHOULDBECORRECTANDRELIABLEAFTERTRANSMISSIONTEST3116测量系统调试工作结束。THEINSPECTIONANDCONFIRMATIONOFMEASURINGSYSTEMMUSTBECOMPLETED3117升压站各隔离开关和接地刀闸的五防闭锁回路调试工作完成。THEANTIMISOPERATIONCIRCUITTESTOFDISCONNECTINGSWITCHESANDEARTHINGSWITCHESWITHINSWITCHYARDMUSTBECOMPLETED3118启/备变安装和单体试验工作结束，瓦斯继电器已经过校验。THEINSTALLATIONANDINDIVIDUALTESTOFSTANDBYTRANSFORMERMUSTBECOMPLETEDTHEGASRELAYSHOULDBECALIBRATED3119启/备变风冷系统正常，有关调压装置经过调试，具备投运条件。THECOOLINGSYSTEMOFSTANDBYTRANSFORMERSHOULDBECOMPLETEDRELATEDVOLTAGEREGULATINGDEVICESSHOULDFULFILLTHEREQUIREMENTOFOPERATIONAFTERTEST3120启/备变保护装置、测量屏、变送器屏等安装结束，二次电缆敷设完成并按照设计图纸接线完毕。THEINSTALLATIONOFSTANDBYTRANSFORMERPROTECTIONS,MEASURINGPANELS,TRANSMITTERPANELSETCSHOULDBECOMPLETEDSECONDARYCABLELAYINGMUSTBECOMPLETED,ANDWIRINGSHOULDBEFINISHEDASPERDESIGN3121启/备变保护装置单体调试工作结束。继电保护的整定已按有关通知单整定完毕。THEINDIVIDUALTESTOFSTANDBYTRANSFORMERPROTECTIONDEVICESSHOULDBECOMPLETEDTHEVALUESETOFRELAYPROTECTIONSSHOULDBESETASPERREQUISITION32土建应具备的条件CIVILPREREQUISITES321各受电区道路通畅，无闲杂堆积物。消防设施完备，具备使用条件。THEROADINENERGIZINGAREAMUSTBESMOOTHWITHOUTUSELESSDEPOSITTHEFIREFIGHTINGEQUIPMENTSMUSTBECOMPLETEANDREADYTOOPERATION322各受电区照明充足，事故照明可靠。THEILLUMINATIONFORENERGIZINGAREAMUSTBESUFFICIENT,ANDTHEEMERGENTILLUMINATIONMUSTBERELIABLE323启/备变事故排油池及消防设施符合设计和运行要求，具备投运条件。THEEMERGENCYOILDISCHARGINGPOOLOFSTANDBYTRANSFORMERANDFIREFIGHTINGEQUIPMENTSSHOULDFULFILLTHEREQUIREMENTOFDESIGNANDREADYTOOPERATION33其它应具备条件OTHERPREREQUISITES331升压站内继电保护设备的有关定值已正式下达，并有书面资料备案。THEVALUESETOFSWITCHYARDRELAYPROTECTIONDEVICESSHOULDBEISSUED,ANDFORMALDOCUMENTSARENEEDEDFORFUTUREREFERENCE332调度单位批准下发的有关220KV升压站受电的程序文件，明确受电相关程序。THEDISPATCHINGUNITSHOULDAPPROVEANDISSUETHEPROCEDUREOF220KVSWITCHYARDENERGIZINGANDCLARIFYRELEVANTENERGIZINGSTEPS333外部输出线路安装工作结束，对侧变电站内继电保护装置及系统调试工作完成，具备投运条件。THEINSTALLATIONOFOUTGOINGLINEMUSTBECOMPLETEDTHETESTOFRELAYPROTECTIONDEVICESANDSYSTEMOFCORRESPONDINGSUBSTATIONMUSTBECOMPLETEDANDREADYTOOPERATION334运行人员已经过相关培训，并做好上岗准备。相关的运行图纸和运行规程应备妥。OPERATINGPERSONNELMUSTFULFILLTHEREQUIREMENTOFDUTYAFTERTRAININGANDREADYFOROPERATIONRELEVANTDRAWINGSANDOPERATINGREGULATIONSMUSTBEAVAILABLE335升压站内运行人员与调度单位的通讯系统已投入使用，就地通讯设备方便可用。COMMUNICATIONFACILITIESBETWEENOPERATINGPERSONNELINSWITCHYARDANDDISPATCHINGUNITMUSTBEPUTINTOOPERATIONLOCALCOMMUNICATIONFACILITIESMUSTBECONVENIENTFORUSE336相关单位应准备好必要的检修工具和材料。SUFFICIENTMAINTAININGTOOLSANDMATERIALSMUSTBEPREPAREDBYRELEVANTUNIT337相关单位应作好受电范围内的保安工作。SECURITYOFENERGIZINGAREAMUSTBEENSUREDBYRELEVANTUNIT4受电步骤ENERGIZINGPROCEDURE41220KV升压站受电操作ENERGIZINGOFTHE220KVSWITCHYARD411220KV母母线冲击合闸试验ENERGIZINGOF220KVMAINBUSI412投入220KV母和1线路的相关保护，检查相关定值无误。PUTRELATEDPROTECTIONSOF220KVMAINBUSIAND1OUTGOINGLINEINTOOPERATIONANDCONFIRMTHESETVALUEMUSTBECORRECT413合上220KV母CVT隔离开关、1线路侧隔离开关。CLOSETHECVTDISCONNECTINGSWITCHOF220KVMAINBUSIANDDISCONNECTINGSWITCHOF1OUTGOINGLINE414合上1线路侧断路器向220KV母母线进行充电，进行设备外观检查，检查220KV母母线PT二次电压相序及幅值的正确性。CLOSE1OUTGOINGLINECBTOENERGIZE220KVMAINBUSICHECKTHEAPPEARANCEOFEQUIPMENTSCHECKTHESECONDARYVOLTAGEPHASESEQUENCEANDVALUEOF220KVMAINBUSIPT415检查一切正常后，220KV母带电运行。AFTERTHEINSPECTIONOF220KVMAINBUSIISCORRECTLY,THEBUSSHOULDBEPUTINTOOPERATION416220KV母母线冲击合闸试验ENERGIZINGOF220KVMAINBUSII417投入220KV母和母联断路器的相关保护，并检查相应定值无误。PUTRELATEDPROTECTIONSOF220KVMAINBUSIIANDBUSCOUPLERINTOOPERATIONANDCONFIRMTHESETVALUEMUSTBECORRECT418合上母联断路器、母隔离开关，送上母联断路器的操作电源。CLOSETHE、BUSDISCONNECTINGSWITCHESTURNONTHECONTROLPOWEROFBUSCOUPLER419合上母联断路器向220KV母母线进行充电，进行设备外观检查，检查220KV母母线CVT二次电压相序及幅值的正确性。CLOSEBUSCOUPLERTOENERGIZETHE220KVMAINBUSIICHECKTHEAPPEARANCEOFEQUIPMENTSCHECKTHESECONDARYVOLTAGEPHASESEQUENCEANDVALUEOF220KVMAINBUSIICVT4110对220KV、母线CVT进行二次定相，检查同名及异名相电压值的正确性。COMPARETHESECONDARYVOLTAGEBETWEEN220KVMAINBUSIANDIICHECKANDCONFIRMTHEVOLTAGEVALUEBETWEENSAMEANDDIFFERENTPHASES4111检查一切正常后，220KV母带电运行。AFTERTHEINSPECTIONOF220KVMAINSISCORRECTLY,THEBUSSHOULDBEPUTINTOOPERATION421启动/备用变冲击试验ENERGIZINGOF1STANDBYTRANSFORMER421将220KV母线作为1启/备变冲击电源。220KVMAINBUSIIWOULDBESERVEDASTHESOURCEOF1STANDBYTRANSFORMERSENERGIZING422投入1启/备变相关保护，确认启/备变低压侧备用电源进线开关均在“检修”位置。PUTTHERELATEDPROTECTIONSOF1STANDBYTRANSFORMERINTOOPERATIONCONFIRMTHESTANDBYINCOMINGSWITCHATLVSIDEOFSTATIONTRANSFORMERMUSTBEPULLEDOUT423对1启/备变空载冲击合闸过程中，有专人在就地监视启/备变的运行情况。DURINGTHEENERGIZINGOF1STANDBYTRANSFORMER,SPECIALPERSONSHOULDBEARRANGEDFORSUPERVISINGTHESTATIONTRANSFORMERSOPERATIONLOCALLY424申请调度令，对1启/备变进行首次空载冲击合闸试验，当调度指令下达后，进行如下操作APPLYFORTHEINSTRUCTIONFROMDISPATCHINGUNITTOEXECUTETHEENERGIZINGOF1STANDBYTRANSFORMERASFOLLOWS425投入1启/备变低压侧进线PT。PUTTHEINCOMINGPTOF1STANDBYTRANSFORMERINTOOPERATION426合上起备变断路器隔离开关，送上起备变断路器的操作电源。CLOSETHEDISCONNECTINGSWITCHESTURNONTHECONTROLPOWEROFCB427合上起备变断路器，对1启/备变进行首次空载冲击合闸试验，并测量低压侧PT二次电压值。CLOSETHECBTOENERGIZETHE1STANDBYTRANSFORMERANDMEASURETHESECONDARYVOLTAGEOFLVSIDEPT4281启/备变首次带电运行10分钟，进行设备外观检查。正常后断开高压侧断路器，间隔5分钟后，可进行第2、3、4、5次冲击，每次运行5分钟间隔5分钟。THEFIRSTENERGIZINGOF1STANDBYTRANSFORMERWILLLASTFOR10MINUTESDURINGTHISTIME,CHECKTHEAPPEARANCEOFEQUIPMENTSAFTERCONFIRMATION,OPENTHECB5MINUTESLATER,STARTNEXTENERGIZINGEVERYENERGIZINGTESTWILLLAST5MINUTES,ANDTHEINTERVALTONEXTTESTIS5MINUTES4291启/备变带电运行。AFTERLASTENERGIZING,PUTTHE7STATIONTRANSFORMERINTOOPERATION4366KV公用A段和B段带电ENERGIZINGOF66KVUNITBOARDAANDB431确认66KV公用A段所有开关均在“检修”位置。ENSUREALLCBOF66KVUNITBOARDAAREPULLEDOUT432检查66KV公用A段母线PT一次保险完好，将母线PT置于工作位置，合上其二次空开和控制电源。CHECKANDCONFIRMTHEPRIMARYFUSESOF66KVUNITBOARDABUSBARPTSHOULDBEQUALIFIEDPUSHTHEBUSBARPTIN“SERVICE”POSITIONCLOSETHESECONDARYSWITCHESANDCONTROLSUPPLYSWITCH433将66KV公用A段进线开关推至“工作”位置，切换开关置“远方”位置，合上操作电源。RACKINTHECBOF66KVUNITBOARDATO“SERVICE”POSITION,SETTHECONTROLSWITCHTO“REMOTE”,ANDCLOSETHECONTROLSUPPLYSWITCH434在ECS合上66KV公用A段备用进线开关，66KV工作A段母线带电，检查66KV工作A段母线PT二次电压幅值和相序。CLOSETHECBOF66KVUNITBOARDA,AND66KVUNITBOARDAENERGIZED,MEASURESECONDARYVOLTAGEANDPHASESEQUENCEOFBUSBARPT435确认66KV公用B段所有开关在“检修”位置。ENSUREALLCBOF66KVUNITBOARDBAREPULLEDOUT436检查66KV公用B段母线PT一次保险完好，将母线PT推至工作位置，合上PT二次空开和控制电源。CHECKANDCONFIRMTHEPRIMARYFUSESOF66KVUNITBOARDBBUSBARPTSHOULDBEQUALIFIEDPUSHTHEBUSBARPTIN“SERVICE”POSITIONCLOSETHESECONDARYSWITCHESANDCONTROLSUPPLYSWITCH437将66KV公用B段备用进线开关推至“工作”位置，切换开关置于“远方”位置，送上其操作电源。RACKINTHESTANDBYCBOF66KVUNITBOARDBTO“SERVICE”POSITION,SETTHECONTROLSWITCHTO“REMOTE”,ANDCLOSETHECONTROLSUPPLYSWITCH438在ECS合上66KV工作B段备用进线开关，66KV工作B段母线带电。检查66KV工作B段母线PT二次电压幅值和相序。CLOSETHECBOF66KVUNITBOARDB,AND66KVUNITBOARDBENERGIZED,MEASURESECONDARYVOLTAGEANDPHASESEQUENCEOFBUSBARPT51公用变A带电ENERGIZINGOFSTATIONSERVICETRANSFORMERA1确认415V公用A段所有开关在“检修”位置。ENSUREALLSWITCHESOF415VSTATIONSERVICEPCAAREPULLEDOUT2投入公用变A变压器温控器。PUTTHETEMPERATURECONTROLLEROFSTATIONSERVICETRANSFORMERAINTOOPERATION3将66KV公用A段（公用变A）开关推至“工作”位置，送上操作电源,在ECS上合开关，对公用变A进行冲击合闸试验。RACKINCBFORSTATIONSERVICETRANSFORMERTO“SERVICE”POSITION,ANDTURNONSWITCHOFCONTROLSUPPLYCLOSETHECBINCCR,STATIONSERVICETRANSFORMERAENERGIZING4检查公用变A低压侧电压幅值及相序的正确性。MEASUREVOLTAGEVALUEANDPHASESEQUENCEATLOWVOLTAGESIDEOFSTATIONSERVICETRANSFORMERA5公用变A保持带电运行。KEEPTHESTATIONSERVICETRANSFORMERAINOPERATION52公用变B带电ENERGIZINGOFSTATIONSERVICETRANSFORMERB1确认415V公用B段所有开关在“检修”位置。ENSUREALLSWITCHESOF415VSTATIONSERVICEPCBISPULLEDOUT“MAINTENANCE”POSITION2投入公用变B变压器温控器。PUTTHETEMPERATURECONTROLLEROFSTATIONSERVICETRANSFORMERBINTOOPERATION3将66KV公用B段（公用变B高压侧开关）推至“工作”位置，送上操作电源,在ECS上合开关，对公用变B进行冲击合闸试验。RACKINCBFORSTATIONSERVICETRANSFORMERBTO“SERVICE”POSITION,ANDTURNONSWITCHOFCONTROLSUPPLYCLOSETHECBINCCR,STATIONSERVICETRANSFORMERBENERGIZING4检查公用变B低压侧电压幅值及相序的正确性。MEASUREVOLTAGEVALUEANDPHASESEQUENCEATLOWVOLTAGESIDEOFSTATIONSERVICETRANSFORMERB5公用变B保持带电运行。KEEPTHESTATIONSERVICETRANSFORMERINOPERATION53照明变带电ENERGIZINGOFLIGHTINGTRANSFORMER1确认415V照明段所有开关在“检修”位置。ENSUREALLSWITCHESOF415VLIGHTINGPCAAREPULLEDOUT2投入照明变变压器温控器。PUTTHETEMPERATURECONTROLLEROFLIGHTINGTRANSFORMERINTOOPERATION3将66KV公用A段（照明变）开关推至“工作”位置，送上操作电源,在ECS上合开关，对照明变进行冲击合闸试验。RACKINCBFORLIGHTINGTRANSFORMERTO“SERVICE”POSITION,ANDTURNONSWITCHOFCONTROLSUPPLYCLOSETHECBINCCR,LIGHTINGTRANSFORMERENERGIZING4检查照明变低压侧电压幅值及相序的正确性。MEASUREVOLTAGEVALUEANDPHASESEQUENCEATLOWVOLTAGESIDEOFLIGHTINGTRANSFORMER5照明变保持带电运行。KEEPTHELIGHTINGTRANSFORMERINOPERATION54检修变带电ENERGIZINGOFMAINTENANCETRANSFORMER1确认415V检修段所有开关在“检修”位置。ENSUREALLSWITCHESOF415VMAINTENANCEPCAAREPULLEDOUT2投入检修变变压器温控器。PUTTHETEMPERATURECONTROLLEROFMAINTENANCETRANSFORMERINTOOPERATION3将66KV公用A段（检修变）开关推至“工作”位置，送上操作电源,在ECS上合开关，对检修变进行冲击合闸试验。RACKINCBFORMAINTENANCETRANSFORMERTO“SERVICE”POSITION,ANDTURNONSWITCHOFCONTROLSUPPLYCLOSETHECBINCCR,MAINTENANCETRANSFORMERENERGIZING4检查检修变低压侧电压幅值及相序的正确性。MEASUREVOLTAGEVALUEANDPHASESEQUENCEATLOWVOLTAGESIDEOFMAINTENANCETRANSFORMER5检修变保持带电运行。KEEPTHEMAINTENANCETRANSFORMERINOPERATION55工作变A带电ENERGIZINGOFWORKINGTRANSFORMERA1确认415V工作A段所有开关在“检修”位置。ENSUREALLSWITCHESOF415VWORKINGPCAAREPULLEDOUT2投入工作变A变压器温控器。PUTTHETEMPERATURECONTROLLEROFWORKINGTRANSFORMERAINTOOPERATION3将66KV公用A段（工作变A）开关推至“工作”位置，送上操作电源,在ECS上合开关，对工作变A进行冲击合闸试验。RACKINCBFORWORKINGTRANSFORMERTO“SERVICE”POSITION,ANDTURNONSWITCHOFCONTROLSUPPLYCLOSETHECBINCCR,WORKINGTRANSFORMERAENERGIZING4检查工作变A低压侧电压幅值及相序的正确性。MEASUREVOLTAGEVALUEANDPHASESEQUENCEATLOWVOLTAGESIDEOFWORKINGTRANSFORMERA5工作变A保持带电运行。KEEPTHEWORKINGTRANSFORMERAINOPERATION56工作变B带电ENERGIZINGOFWORKINGTRANSFORMERB1确认415V工作B段所有开关在“检修”位置。ENSUREALLSWITCHESOF415VWORKINGPCBAREPULLEDOUT2投入工作变B变压器温控器。PUTTHETEMPERATURECONTROLLEROFWORKINGTRANSFORMERBINTOOPERATION3将66KV公用B段（工作变B）开关推至“工作”位置，送上操作电源,在ECS上合开关，对工作变A进行冲击合闸试验。RACKINCBFORWORKINGTRANSFORMERTO“SERVICE”POSITION,ANDTURNONSWITCHOFCONTROLSUPPLYCLOSETHECBINCCR,WORKINGTRANSFORMERBENERGIZING4检查工作变B低压侧电压幅值及相序的正确性。MEASUREVOLTAGEVALUEANDPHASESEQUENCEATLOWVOLTAGESIDEOFWORKINGTRANSFORMERB5工作变B保持带电运行。KEEPTHEWORKINGTRANSFORMERBINOPERATION57415V公用A段带电ENERGIZINGOF415VSTATIONSERVICEPCA1确认415V公用A段上所有开关在“检修”位置。ENSUREALLSWITCHESOF415VSTATIONSERVICEPCAAREPULLEDOUT2检查415V公用A段母线PT一次保险完好，将PT置于工作位置送上PT二次空开及控制电源CHECKANDCONFIRMTHEPRIMARYFUSESOFTHEPTOF415VSTATIONSERVICEPCASHOULDBEQUALIFIEDPUTTHEPTINTO“SERVICE”POSITIONTURNONITSSECONDARYSWITCHESANDCLOSECONTROLSUPPLY3将415V公用A段进线开关推至“工作”位置,送上其操作电源。RACKINTHEINCOMINGBREAKEROF415VSTATIONSERVICEPCATO“SERVICE”POSITIONTURNONSWITCHOFCONTROLSUPPLY4在ECS上合上进线开关，向415V公用A段充电。CLOSETHESWITCHINCCR,415VSTATIONSERVICEPCAENERGIZING5检查415V公用A段电压幅值及相序的正确性。MEASURETHEVOLTAGEVALUEANDPHASESEQUENCEOF415VSTATIONSERVICEPCA58415V公用B段带电ENERGIZINGOF415VSTATIONSERVICEPCB1确认415V公用B段上所有开关在“检修”位置。ENSURETHATALLSWITCHESON415VSTATIONSERVICEPCBAREPULLEDOUT2检查415V公用B段母线PT一次保险完好，将PT至于工作位置。送上PT二次空开及控制电源CHECKANDCONFIRMTHEPRIMARYFUSESOFTHEPTOF415VSTATIONSERVICEPCBSHOULDBEQUALIFIEDPUTTHEPTINTO“SERVICE”POSITIONTURNONTHESECONDARYSWITCHESANDCLOSECONTROLSUPPLY3将415V公用B段进线开关推至“工作”位置，送上其操作电源。RACKINTHEINCOMINGBREAKEROF415VSTATIONSERVICEPCBTO“SERVICE”POSITIONTURNONCONTROLSUPPLYSWITCH4在ECS上合上进线开关，向415V公用B段充电。CLOSETHEBREAKERINCCR,415VSTATIONSERVICEPCBENERGIZING5检查415V公用B段电压幅值及相序的正确性。MEASURETHEVOLTAGEVALUEANDPHASESEQUENCEOF415VSTATIONSERVICEPCB59415V照明段带电ENERGIZINGOF415VLIGHTINGPC1确认415V照明段上所有开关在“检修”位置。ENSUREALLSWITCHESOF415VLIGHTINGPCAREPULLEDOUT“MAINTENANCE”POSITION2检查415V照明段母线PT一次保险完好，将PT置于工作位置送上PT二次空开及控制电源CHECKANDCONFIRMTHEPRIMARYFUSESOFTHEPTOF415VLIGHTINGPCSHOULDBEQUALIFIEDPUTTHEPTINTO“SERVICE”POSITIONTURNONITSSECONDARYSWITCHESANDCLOSECONTROLSUPPLY3将415V照明段进线开关推至“工作”位置,送上其操作电源。RACKINTHEINCOMINGBREAKEROF415VLIGHTINGPCTO“SERVICE”POSITIONTURNONSWITCHOFCONTROLSUPPLY4在ECS上合上进线开关，向415V照明段充电。CLOSETHESWITCHINCCR,415VLIGHTINGPCENERGIZING5检查415V照明段电压幅值及相序的正确性。MEASURETHEVOLTAGEVALUEANDPHASESEQUENCEOF415VLIGHTINGPC510415V检修段带电ENERGIZINGOF415VMAINTENANCEPC1确认415V检修段上所有开关在“检修”位置。ENSURETHATALLSWITCHESON415VMAINTENANCEPCAREPULLEDOUT“MAINTENANCE”POSITION2检查415V检修段母线PT一次保险完好，将PT至于工作位置。送上PT二次空开及控制电源CHECKANDCONFIRMTHEPRIMARYFUSESOFTHEPTOF415VMAINTENANCEPCSHOULDBEQUALIFIEDPUTTHEPTINTO“SERVICE”POSITIONTURNONTHESECONDARYSWITCHESANDCLOSECONTROLSUPPLYSWITCH3将415V检修段进线开关推至“工作”位置，送上其操作电源。RACKINTHEINCOMINGBREAKEROF415VMAINTENANCEPCTO“SERVICE”POSITIONTURNONCONTROLSUPPLYSWITCH4在ECS上合上进线开关，向415V检修段充电。CLOSETHEBREAKERINCCR,415VMAINTENANCEPCENERGIZING5检查415V检修段电压幅值及相序的正确性。MEASURETHEVOLTAGEVALUEANDPHASESEQUENCEOF415VMAINTENANCEPC511415V工作A段带电ENERGIZINGOF415VWORKINGPCA1确认415V工作A段上所有开关在“检修”位置。ENSUREALLSWITCHESOF415VWORKINGPCAAREPULLEDOUT2检查415V工作A段母线PT一次保险完好，将PT置于工作位置送上PT二次空开及控制电源CHECKANDCONFIRMTHEPRIMARYFUSESOFTHEPTOF415VWORKINGPCASHOULDBEQUALIFIEDPUTTHEPTINTO“SERVICE”POSITIONTURNONITSSECONDARYSWITCHESANDCLOSECONTROLSUPPLY3将415V工作A段进线开关推至“工作”位置,送上其操作电源。RACKINTHEINCOMINGBREAKEROF415VWORKINGPCATO“SERVICE”POSITIONTURNONSWITCHOFCONTROLSUPPLY4在ECS上合上进线开关，向415V工作A段充电。CLOSETHESWITCHINCCR,415VWORKINGPCAENERGIZING5检查415V公用A段电压幅值及相序的正确性