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變壓器故障應(yīng)急預(yù)案

TransformerEmergencyPlan

Symptoms:

1.Emergencyshutdown

2.Seriousheatingatvariousconnectionpointsofthetransformer

3.Abnormalsoundfromthetransformer

Emergencyresponse:

1.Emergencyshutdown

1.1Afteranaccidentoccurs,theon-dutyoperatorshouldimmediatelyreporttheaccidenttotheon-dutydispatcherandthesupervisor,andreportthetimeandbasicsituationoftheaccident.

1.2Theon-dutydispatchershouldquicklyassesstheconsequencesoftheaccident,activatethebackupemergencyplan(changetheoperatingmode),andpromptlyreporttothehigher-leveldispatchdepartmentforsupport.

2.Seriousheatingatvariousconnectionpointsofthetransformer

2.1Theon-dutyoperatorshouldimmediatelyreporttheabnormalequipmentsituationtotheon-dutydispatcherandrequestthenextworkinstructions.

2.2Theon-dutydispatchershouldquicklyassesstheconsequencesofthefault,issueclearworkinstructions,activatethebackupemergencyplan(changetheoperatingmode),ornotifytherepairdepartment(orrelevantunit)todeterminethecauseofthefaultandrestoretheequipmentfunction.

3.Abnormalsoundfromthetransformer

3.1Thetransformershouldemitacontinuousanduniformhumwhenoperatingnormally.

3.2Anyothersoundisabnormal.

3.3Theon-dutyoperatorshouldimmediatelyreporttheabnormalequipmentsituationtotheon-dutydispatcherandrequestthenextworkinstructions.

3.4Theon-dutydispatchershouldquicklyassesstheconsequencesofthefault,issueclearworkinstructions,andactivatethebackupemergencyplan.

Faultjudgment:

1.Emergencyshutdown

1.1Generally,itisafaultofthemainbodyofthetransformer,mainlyincludinglocalshortcircuitormeltingoftheironcore,insulationdamage,coilshortcircuitorbreak,groundbreakdown,contactburnofthetapswitch,groundbreakdownordischargeofthebushing,orrelayprotectionaction.Inseverecases,itmaycauseafire.

1.2Automaticdeviceofthetransformertrips:Atthistime,itisnecessarytocheckwhetherthereisashortcircuit,overload,orsecondarycircuitfaultoutside.Ifthefaultisnotoutside,theinsulationresistanceneedstobechecked.

2.Seriousheatingatvariousconnectionpointsofthetransformer

2.1Heatingafterloadingmaybeduetomismatchedtransformerpower,poorcoolingsystemheatdissipation,orpoorcontactattheconnectionpoints.

2.2Themainbodyofthetransformeritselfmayhavequalityproblems.

3.Abnormalsoundfromthetransformer

3.1Whenthetransformeremitsa"squeaking"sound,thereisaflashover,andthesharppartsofthetransformermetalpartsneedtobecheckedforblunting.

3.2Whenthetransformermakesa"buzzing"sound,thereisabreakdown,whichmayoccurbetweenthecoilorironcoreandtheclamp.

Repairandrecovery:

1.Ifthereisafaultinthemainbodyofthetransformer,themanufacturershouldbenotifiedtorepairitinatimelymanner.

2.Forotherfaults,thefaultyequipmentshouldbeisolatedfirst,andthefaultpointshouldbedetermined.Therepairdepartment(orrelevantunit)shouldbenotifiedtorepairtheequipmentandeliminatethefault.

3.Forpowermismatch,poorcoolingsystemheatdissipat

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