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HOW THE DISTURBANCE ATHOW THE DISTURBANCE AT
GRIDS IS RECORDEDGRIDS IS RECORDED
WE ARE NOW GOING TO LEARN ABOUTWE ARE NOW GOING TO LEARN ABOUTTHIS TOPICTHIS TOPIC
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Numerical Relays and DisturbanceNumerical Relays and DisturbanceRecordingRecording
Numerical Relays AndDisturbance Recording
By
Engr. Syed Husnain Shah
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Conventional TechnologyConventional Technologycontrol panel, separate relay room, connectivity throughcontrol panel, separate relay room, connectivity through
hardwiring.hardwiring.
New TechnologyNew Technologylocal control, multifunction relays, connectivity through seriallocal control, multifunction relays, connectivity through serial
communication.communication.
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Multipurpose protection relay series
Voltage relays:
REU 523 & REU 513
Overcurrent & earth-fault relays:
REJ 525 & REJ 515Overcurrent relays:
REJ 523 & REJ 513
Earth-fault relays:
REJ 521 & REJ 511
Directional earth-fault relays:
REJ 527 & REJ 517
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Features
A wide range of protection functions
Wide and accurate numerical settings with perfectlong-time stability
Two sets of relay settings available
Recorded and time-stamped data of the latest 5 events Event code buffer of the latest 60 events
Disturbance recording function for fault analysis
Output relay functions freely configurable for trippingand signalling
Circuit-breaker failure protection unit
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Features
Binary input for blocking, external resetting, triggering and selection ofsetting group
Optical serial interface on the front panel for communication with portablecomputer
Powerful and easy-to-use software tools for relay setting
High system reliability and availability due to continuoushardware and software self-supervision
High immunity to electrical and electromagnetic interference
Relay case with a degree of protection according to IP 54
Rated frequency user-selectable 50/60 Hz
CE marking according to the EC directive for EMC
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The supervision of your network will beThe supervision of your network will beenhanced by usingenhanced by using Numerical relaysNumerical relays
11--Easy to useEasy to use -- ready made nfigurations =ready made nfigurations =local adaptations are not neededlocal adaptations are not needed
22--Wide protection functionalityWide protection functionality -- covering thecovering the
most essential protection functionsmost essential protection functions33--Condition monitoring functionsCondition monitoring functions -- forfor
continuos supervisioncontinuos supervision
44--Control functionsControl functions -- local or remotelocal or remote
MeasurementsMeasurements
55--ConnectivityConnectivity -- for remote control andfor remote control and
monitoringmonitoring66--Easy to integrate in systems throughEasy to integrate in systems through
communication protocolscommunication protocols
77--Easy to orderEasy to order
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Functionality
ControlControl
Control of one circuit breakerControl of one circuit breaker
Indication of 3 objectsIndication of 3 objects
PrePre--programmed interlockingprogrammed interlocking
conditionsconditions
Condition MonitoringCondition Monitoring
Self supervision (IRF)Self supervision (IRF)
Trip circuit supervisionTrip circuit supervision
CircuitCircuit--breaker wearbreaker wear
Phase current supervision (MCSPhase current supervision (MCS3I)3I)
Phase voltage supervision (MCSPhase voltage supervision (MCS3U)3U)
CommunicationCommunication
SPA, LON and IEC103SPA, LON and IEC103protocolprotocol
Set values, measuredSet values, measuredvalues, registered values /values, registered values /
events, uploading ofevents, uploading ofdisturbance recorder data,disturbance recorder data,control, etc. availablecontrol, etc. availabletrough communicationtrough communication
Easy to useEasy to use
Measured values shown asMeasured values shown asprimary valuesprimary values
The settings are made inThe settings are made inprimary valuesprimary values
Easy menu navigationEasy menu navigation
MMI in several languagesMMI in several languages
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Everything in one box
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Flexibility
Full range of protection, measuring,
control and supervision functions
Large amount of generic functions
Freely drawable mimic view
Freely programmable alarm indications
Freely configurable function button
Application-specific functionality
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Protection FunctionsProtection Functions AutoAuto--reclosing (reclosing (55 shots)shots)
Phase discontinuityPhase discontinuity
NonNon--directional earthdirectional earth--faultfault
Directional earthDirectional earth--faultfault
NonNon--directional overcurrentdirectional overcurrent Directional overcurrentDirectional overcurrent
Under/overfrequencyUnder/overfrequency
Transformer inrush and motorTransformer inrush and motorstartstart--up current detectorup current detector
OvervoltageOvervoltage UndervoltageUndervoltage
Residual overvoltageResidual overvoltage Synchro/voltageSynchro/voltage--checkcheck
Thermal overload for cablesThermal overload for cables
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Substation automation (SCS)
Protection
Monitoring and control
Communication with NCC
Power quality measurements
Time synchronization
Interlocking Metering
MV & HV
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Event Capture From Aug. 14,Event Capture From Aug. 14,
20032003
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How are you Feeling?????? AfterHow are you Feeling?????? Afterlistening to this lecture????listening to this lecture????
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You must be feeling Like..You must be feeling Like..
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This??????
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THANKS FOR YOUR PATIENCETHANKS FOR YOUR PATIENCE