An expert solution is within your reach. · 2019-05-10 · An expert solution is within your reach....
Transcript of An expert solution is within your reach. · 2019-05-10 · An expert solution is within your reach....
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EORSys
An expert solution is within your reach.•Systemsolutionforcompensated,
isolatedandsolidlygroundedgrids
•Precisecontrolofarcsuppressioncoils
•Reliablelocatingofearthfaults
•Detectionofrestrikingfaults
•Detectionofshortcircuits
•Faultdatarecording
•Extensivecommunicationcapabilities
fordevicesremoteconnection
•Servicing,commissioningandfailure
analysis
EORSys
Transient method using the qu2 principle, suitable for detection•offaultsupto3kOhm•ofparallelcablesandinringgrids•offaultsinspurcables
Detecting restriking faults using the qui method•directionaldisplayofrestrikingfaults•faultindication
Watt-metric Method cos(ϕ)•forWattresidualcurrent•forWattresidualpowerincrease withadditionalresistance
Harmonic method for 250 Hz
Harmonic method for locating with ripple control signals
Pulse location method •classicalwithcapacitors•fastpulselocation
Short-circuit detection using the definite time overcurrent principle (EOR-3D only)•directional•non-directional
TheEORSysproductfamilyoffersacompletesolutionforgridswithresonantearthed,isolatedandsolidlygroundedneutral .
Solutions for compensated grids
Usingthecontrollerforvariablearcsuppressioncoils(REG-DPandREG-DPA)youcancomfortablyregulateincompensatedgridstothecorrecttuningpoint.Ifregulationisabitmorecomplicatedormoredifficultduetonon-linearloads,theoptionalyavailableREG-DPandREG-DPAcurrentinjec-tionprovidesaremedy.Thecurrentinjectionenablesprecisecompensa-tion/tuningofthearcsuppressioncoilsunderthemostdifficultconditions.
Ifanearthfaultoccursinthegrid,multipleA.Eberledevicesaresi-multaneouslyavailabletoaccuratelylocateit.Thefollowinglocalisationmethodsareincludedfordetectionincompensatedgrids:
EORSysproductrangedeployment
Quickly locating earth faults. Safe control of Petersen coils
Earthfaulttests-restrikingfaults
EORSys
Solution for isolated grids
Indistributiongridswithaninsolatedneutralthefollowingdetectionproce-duresareavailable.
Transient method using the qu2 principle, suitable for location•inparallelcablesandinringgrids•offaultsinradialfeeders
Detecting restriking faults using the qui method•directionaldisplayofrestrikingfaults•faultindicationdisplay
Harmonics method sin(ϕ)
Harmonic method for 250 Hz
Harmonic method for locating with ripple control signals
Short-circuit detection using the definite time overcurrent principle (EOR-3D only)•directional•non-directional
Engineering serviceControl
Location
Report
Data analysis
Solution for rigid/low impedance grounded systems
Insolidlyorlow-impedancegroundedgrids,nosignificantincreaseinthezerosequencevoltageoccurswithasingle-phasefault.Inaddition,thefaultcurrent,whencomparedtocompensatedandisolatedgridsismuchhigherinthatcase.Onlyoneformoffaultdetectionremainsthenavailable.
Short-circuit detection using the definite time overcurrent principle (EOR-3D only)•directional•non-directional
EORSys
A Controller for arc suppression coils
REG-DPandREG-DPA
TheREG-DPdevices(19"technology)andREG-DPA(industrialenclosures)areprimarilyusedfortheauto-tuningofadjustablearcsuppressioncoils.Theyareusedincoilsinmediumvoltagegridsandhigh-voltagegridsupto110kV.
Forgoodcontrolperformance,thephaseangleinformationistakenintoaccountinadditiontothevalueofthezerosequencevoltage.Consequently,evensmallchangesinthevaluescanbecompensated.
Ofcourse,eachcontrollercanperformothertasksthatsupportthecontrolorevenapossibleearthfaultlocalisation.
Thecontrollersalsoprovidethefollow-ingfeatures:
•Controlforfixedcoils,parallelfor plunge-corecoils•Parallelcontrolofplunge-corecoils throughcommunicationbetween controldevices•Parallelcontrolofplunge-core coilswithoutcommunication betweencontroldevices•ControllingtheresistorfortheWatt residualcurrentincrease;includingthe thermalimageoftheresistanceand thusoverheatingprotection•Connectionandcontrolofthe currentinjection•Compensationduringanearthfault (onlyincombinationwiththeEOR-D)•Controlofthepulsingcurrentfor classicalpulselocatingmethod
Thecontrolofthepulsingcurrentcanbefreelyprogrammedindividuallytoyourrequirements.
Henceaprogramensuresthecorrectdegreeofovercompensation,thecon-trolofthepulsedevicesandthemoni-toringofthepulsecycles.
Forcommunicationwiththecontrolcentretherearesufficientrelayoutputsorallcurrentcommunicationprotocolsavailable.
Current injection
ThecontrolofarcsuppressioncoilscanbedifficultundercertainconditionsWhy?Becauseoftheincreasinglevelofcablingofmoderngrids.Thisincreasesthenaturalsymmetryoftheconductor.
Petersencoilwithintegratedcurrentinjection
EORSys
Ontheotherhand,itreducesthemag-nitude(zerosequencevoltage),whichisusedforthecontrolpurpose.
Thecurrentinjectioniscapable,withouttheadjustmentoftheplunge-corecoil,toidentifythetuningpointbyapplyingadefinedsignal.Thusitisparticularlysuitableforthesedifficultsituations:
•Verysmallzerosequencevoltage•Unstablezerosequencevoltagedue toloadcrosstalk
•Changingthenaturalsymmetryper phaseatconstanttotalcapacity
Theso-calledcurrentinjectionwasdevelopedpreciselyforsuchcases.
REG-DP/DPA: The expert solution.
Unstable history of the zero sequence voltage over 14 days with a constant grid capacity
EORSysProductrange:ThePetersencoilcontrolandfaultlocationsystem
EORSys
EOR-D earth fault locating relay
Reliableearthfaultlocationisnecessaryincompensatedandisolatedgridsduetothelowfaultcurrents.
TheEOR-Dprovidestheabilitytomonitor4outputfieldsforearthfaultsperunit.Multipledevicescanbecon-nectedtoasinglesystem.Theadvan-tageisthatoneneedsonlyonecon-figurationfortheearthfaultrecordingpersubstationorperstation.Inaddi-tion,thissimplifiestheremotecontrolcenterconnection.Onlyoneprotocolconverterisrequiredforeachsystem.
Sinceeachgridisdifferent,thereisnoonelocationmethodforallsituations.TheEOR-Dprovidesachoiceofsev-eralmethods:
•Directionaltransientdetectionusing thequ2method•Directionaldetectionofrestriking faultsusingthequimethod•Directionaldetectionusingthe harmonicmethod•Localisationusingripple-control signalsandtheharmonicmethod•watt-metricmethodcos(ϕ)•Pulselocationmethod•Harmonicsmethodsin(ϕ)usedfor isolatedgrids
Combined earth fault and short circuit indicator - EOR-3D
Thedevicefordirectionaldetectionofearthfaultsandshort-circuitsforasingleoutputfieldistheEOR-3D.ItcanhandlealllocalisationmethodsusingthesamealgorithmsastheEOR-D.Inaddition,ithasdirectionalornon-directionalshort-circuitdetection.
Duetoitscompactdesign,itisalsoeasytoinstallinsmallstations.
EORSys
Special features of the EOR-3D
•4GBofinternalmemoryforfault recordinginsecondranges -oscilloscoperecording -displayofthedigitaltraces•CommunicationusingTCP/IP, USB2.0,RS232,RS485•colourOLEDdisplay•forlocaloperationviakeyboard andgraphicdisplay•integratedcontrolprotocolsfor –IEC60870-5-101/103/104 –MODBUSRTUandTCP –DNP3.0RS485andTCP•Useincombinationwithconven- tionaltransducersandsensors
One system, many solutions
EOR-3DDINrailversion
EOR-1ESwithloadcurrentmonitoring
EOR-3Dindustrialhousing
NEW! EOR-1 - simple earth fault and short circuit indicator with matching sen-sors in set for cables and overhead lines
TheEOR-1rangeofdevicesissuitableforwideuseinallformsofgrids.Theyarecharacterizedbytheirsimplicityofoperationandinstallation:
•Earthfaultandshortcircuitindica- torusingcurrentdetection•Signallingthroughrelaycontacts•Externalsignallingunitsavailable•Nooperatingsoftwarenecessary•Powersupplyfrominternal battery(externalpowersupply availableasoption)
•unexpensiveandrobustcurrent sensorsforallcommonconductor diameters•Currentsensorsfordirectwire installation(withfibre-opticoutput)•Remotesignallingthroughrelay contacts•EOR-1ESmodelwithintegrated MODBUSmodulewithpower savingmode-noexternalsupply needed!•Overheadlineindicatorwithremote controlanddatareadout
A. Eberle GmbH & Co. KGFrankenstraße160D-90461NurembergFon +49(0)911628108-0Fax +49(0)911628108-99Email [email protected] www.a-eberle.deEO
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Yoursalespartner
Protocol REG-DPREG-DPA
EOR-D EOR-3D EOR-1 ES
MODBUS RTU x x x
MODBUS TCP x x
DNP 3.0 x x x
DNP 3.0 TCP x x x
IEC 60870-5-101 x x x
IEC 60870-5-103 x x x
IEC 60870-5-104 x x x
IEC 61850 (Ed. 1/2 x x
REG-DP/REG-DPA–Thecontrollerforplunge-corecoils.
EOR-D–Earthfaultdetectionforsubstationsandstationswithmultiplefeeders.
EOR-3D–Earthfaultandshortcircuitindicator forsubstations,compactstationsuptolocalgridstationswithspecialrequirements.
EOR-1 ES–Earthfaultandshortcircuitindicatorforcompactandlocalgridstations;optimizedandreducedtoessentialfunctions.
AlldevicesintheEORSysrangecanbeconnectedeasilyusingcontroltech-nology.Thereareenoughrelayoutputsavailableforconventionaltelecontrol.Alternatively,thedevicessupportthefollowingcommunicationprotocols:
Remote signalling/communication