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SR489Generator Management RelayEconomical protection, metering, and monitoring functions for small and medium sized generators.

Presented by:

John Levine, P.E.Levine Lectronics and Lectric, Inc.

John@L-3.com770 565-1556

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Outline

Overview

Theory

Hardware

Wiring

Software

Testing

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Overview

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Product Overview• Suitable for protecting

Induction and Synchronous Generator

• Generator Protection Features• Drawout Case Installation• Hardware• Communications• EnerVista Software• Fault Diagnostics• Metering• Testing and Commissioning• Ordering

SR489 Generator Management Relay

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Product Overview• Ideal Protection for Induction and

Synchronous Generators at 25, 50 and 60Hz

• Complete Generator Protection including:

• Generator Stator Differential• 2 Zone Distance Backup• 100% Stator Ground

• High speed sampling, 12 samples per cycle

• Drawout Case Installation

• Powerful Fault Recording: Waveform, Sequence of Events

• Ethernet and Serial Communications

• EnerVista Suite of Software supported

• Metering of all important parameters

SR489 Generator Management Relay

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Theory

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Show Generator Theory General Overview and Typical System from Training CD

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Generator Protection

• Internal and External Short Circuits

The "Wild"PowerSystem

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Exciter

StatorGround

StatorPhase

SystemGround

SystemPhase

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Generator Protection Review

– Abnormal Operating Conditions• Loss of Synchronism

• Abnormal Frequency

• Overexcitation

• Field Loss

• Inadvertent Energizing

• Breaker Failure

• Loss of Prime Mover Power

• Blown VT Fuses

• Open Circuits

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Generator Protection

• Abnormal Operating Conditions

The "Wild"PowerSystem

G

Exciter

Loss of FieldLoss of Field

Overexcitation

Overexcitation

Overexcitation

OpenCircuits

Loss ofSynchronism

InadvertentEnergizing,Pole Flashover

AbnormalFrequency

AbnormalFrequency

BreakerFailure

ReversePower

OverPower

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Small Machine Protection IEEE Buff Book

• Small – up to 1 MW to 600V, 500 kVA if >600V

32 Reverse Power

40 Loss of Excitation

51V voltage restraint

51G Ground overcurrent

87 Differential

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Small Machine Protection IEEE Buff Book

• Medium – up to 12.5 MW

32 Reverse Power

40 Loss of Excitation

46 Negative Sequence

51V voltage restraint

51G Ground overcurrent

87 Differential

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Small Machine Protection IEEE Buff Book

• Large – up to 50 MW

32 Reverse Power

40 Loss of Excitation

46 Negative Sequence

49 Thermal Overload

51V voltage restraint

51G Ground overcurrent

64 Ground Relay

87 Differential

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• Unit Connected,

• High Z Grounded

Large Machine ProtectionIEEE C37.102

32 Reverse Power

40 Loss of Excitation

46 Negative Sequence

49 Thermal Overload

51V voltage restraint

51G Ground overcurrent

64 Ground Relay

87 Differential

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SR489 Protection Functions

Protection Functions Include:

• Generator Stator Differential• Backup Distance Protection• 100% Stator Ground• Generator Unbalance• Loss of Excitation• Accidental Energization• Breaker Fail • Phase Overcurrent – Voltage Restraint• Neutral Inst. / Timed Overcurrent• Neg. Sequence Overcurrent• Under / Over Voltage• Under / Over Frequency• Generator Thermal Model• RTD Temperature• Overexcitation – Volts/Hertz

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Desirable Attributes - Generator

– Reverse Power (32)• Should be sensitive to 0.05 pu to properly detect motoring in large steam turbines

– Existing E/M and Static relays not sensitive enough

– May cause shutdown difficulties

– Negative Sequence (46)• Should be sensitive to low values to detect open poles/conductors on system after GSU

– Existing E/M and Static relays not sensitive enough

• Long time low level events may cause excessive rotor heating, thermal tripping and damage rotor

– 100% Stator Ground (59N / 59D)• Protects all of the stator winding

– Existing schemes typically only see 90%

– Stop low level fault near neutral from degrading into a high level fault and causing large amounts of damage

– Very secure

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Desirable Attributes - Generator

• Inadvertent Energizing (50/27)

– High speed tripping of unit after breaker accidentally closed on dead machine, also pole flashover prior to syncing

• Most existing schemes do not incorporate

– Many schemes fail due to complexity (reliance on breaker auxiliary switches, yard distance relays, etc.

– If breaker is not tripped rapidly, mechanical and electric damage can occur to machine in fractions of a second!

– Pole flashovers must be cleared by high speed breaker failure, as the breaker is open!

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Line – Ground faults – Delta Connected Generator

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Line – Ground faults – Wye Connected Generator

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SR489 Protection Functions

Generator Stator Differential• Stator Phase Differential• Dual Slope Percent Restraint Operating

Characteristic • Directional Supervision under saturation

conditions

Distance Backup Protection• 2 Zone Mho Distance Protection• Backup for primary line protection• Configurable Reach and Angle Distance

Characteristic

100% Stator Ground Protection• 95% Fundamental OverVoltage• 15% Third Harmonic UnderVoltage

Dual Slope Phase Differential

Two Zone Distance Backup

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SR489 Protection Functions

Voltage Restraint Overcurrent

Undervoltage Trip Curves

Voltage Protection• Phase Overvoltage• Phase Undervoltage• Neutral Overvoltage (fundamental)• Neutral Undervoltage (3rd Harmonic)• Voltage Phase Reversal

Current Protection • Phase, Ground and Negative Sequence Overcurrent Tripping

• IEC, ANSI , IAC and Customizable Overcurrent Curves

• Voltage Restraint increasing sensitivity under low voltage conditions

Frequency Protection• Overfrequency• Underfrequency

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SR489 Protection Functions

Loss of Excitation

Thermal Protection• Generator Thermal Model• RTD Alarming and Tripping• RTD Biased Thermal Model

Inadvertent Energization (show Training CD)

• Prevents Accidentally Closing a Stopped Generator onto a Live Line

• Armed when Generator is Offline and Voltage is below a pre-set level

Loss of Excitation (show Training CD)

• Uses Impedance Circle for loss of excitation detection• 2 Zones for fault detection and control

Volt/Hertz (Overexcitation)• Detects changes in the Volts/Hertz ratio of the generator or associated transformer

Thermal Model – Voltage Dependant Overload Curves

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Hardware

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489 * * * * * 489 Generator Management Relay

P1 - - - - 1 Amp Phase CT Secondary Inputs

P5 - - - - 5 Amp Phase CT Secondary Inputs

LO - - - 20-60VCD, 20-48VAC Control Power

HI - - - 80-300VDC, 70-265VAC Control Power

A1 - - 0-1 mA Analog Outputs

A20 - - 4-20 mA Analog Outputs

- - Basic Display

E - Enhanced Display – Larger LCD

T - Enhanced Display with Ethernet (10-Base-T)

H Harsh (chemical) environmental conformal coating

Ordering

SR489 Generator Management Relay

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• 6 Form-C Output Relays• 10ms Operate Time• Make and Carry 30A for 0.2 sec.• Carry 10A Continuous

• 9 Contact Inputs• Opto-isolated Dry Contacts

• 12 RTD Inputs• 100 Ω Platinum• 100 Ω Nickel• 120 Ω Nickel • 10 Ω Copper

• 4 programmable analog outputs• 4-20 or 0-1 mA (as ordered)• 29 programmable parameters

• Pulse Output• Configurable Pulse Output based on

+ kwh, +kvarh, –kvarh

Hardware Connections

SR489 Physical Access Points

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• Protection, metering, control

• Event recorder• Data logger• Waveform analysis

• Security Audit Trail• Revision

control/history

• Alarm indication• Asset status • System Status

• Large LCD Display

• Self description

• Minimize replacement time

• RS232 serial port

• Dedicated control keys• Full numerical keypad

SR489 Physical Interface

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LEDs

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Wiring

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Software

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Example

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• Comprehensive data for fault & system analysis

• Complete archive of up-to-date documents & software

• Single application for configuring all devices

• Automatic email notification on

new updates

• Scheduled downloads of all new

document & software releases”The most powerful relay management tool”

SR489 EnerVista Software

EnerVista Launchpad – Easy to use Device Setup and Document Management Toolset

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Settings configuration• Intuitive protection settings• Document library & update

Metering• Local HMI• Status of all inputs and outputs• Real-time monitoring of phasors

Troubleshooting• Search and sorts of event records• COMTRADE waveform viewer• Real time data logging

Role Based Security• Restricted access to relay

Simply the most powerful way to manage your SR489

SR489 EnerVista Launchpad

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EnerVista SR489 Setup Program

• Plug-And-Play communications• Setpoint Configuration• Metering Values• Record Retrieval• Oscillography Viewing• Event Recorder Viewing• Setting File Management• Printing Setting Files• Simulation mode for

testing/training• SR489 Firmware Upgrading

SR489 EnerVista Setup Program

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Viewpoint Monitoring • Monitoring, control, trending, alarming & fault data recording

Viewpoint Engineer • Programming, testing & commissioning

Viewpoint Maintenance • Status & security reports, fault diagnostics & fault data collection

Simplifying every aspect of customer interaction

SR489 EnerVista Viewpoint

Premium Monitoring, Engineering, & Maintenance Toolsets

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Viewpoint Monitoring

Remotely monitor the relay in real-time. . . Easy to use, one tool for:

• Plug & play screens for instant monitoring

• Single-line monitoring

• Annunciator alarming

• Trending

• Automatic fault data collection

Simplifying every aspect of customer interaction

SR489 Viewpoint Monitoring

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Simplifying every aspect of customer interaction

Viewpoint MaintenanceDevice Health and Security Reporting • Single click retrieval of fault data

• Setting security report showing history of setting changes

• Health report showing status of protective device

SR489 Viewpoint Maintenance

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Generator Statistical Data• Total Generator Running Hours

• Number of Generator Trips

• Number of Breaker Operations

Generator Fault Recording• Last Trip & Pre-Trip data Report

• Sequence of Event Report – 256 Events

• Waveform Fault Capture

• Automatic Triggering

• Up to 128 Cycles in length

• Up to 16 separate Fault Incidents

• Records 16 Analog data channels

SR489 Generator Maintenance & Diagnostics

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• Voltage (Phase to Phase & Phase to Line)• Phase and Ground Current• Differential Current• Negative Sequence Current• Frequency• % Generator Load• % Generator Current Unbalance• Power (MW, Mvar, MVA) • Energy (MWh, Mvarh)• Power Factor• Demand• RTD Temperature• Speed (Tachometer)• Breaker Status

Metering & Monitoring

SR489 Generator Monitoring

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Security Audit Trail

• Date and time of hardware, firmware or setting changes to your relays

• Logging of the MAC address of computers and users making settings changes

• Track method of how settings changes were made (i.e. keypad, serial port, ethernet)

Security strategy – conforms to industry and regulated guidelines

• Date/time security report was generated

• Description of the GE Multilin Relay

• Summary of the last time the configuration was changed

• History of last 10 occurrences the configuration was changed

SR489 Enhanced Security

Prevents Unauthorized Access and Provide Traceability

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Demo the software

– Connecting to relay– Uploading settings– Downloading settings– File compare– Settings

• Active verses setting group– Digital input > predefined > dual setpoints

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Testing

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• Allows testing without external test equipment

• Simulates all Current and Voltage injection

• Simulate Pre-fault conditions• Simulate Fault Conditions• Verify protection element operation• Analyze simulated waveforms and

relay actions• Test output relays• Test analog inputs

Simulation Mode

SR489 Simplified Testing

Ideal for verifying configuration….and for training employees

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Questions?