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1 Overview of Digital Relays ISO Training John S. Levine, P.E. Levine Lectronics & Lectric

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Presentation on theme: "1 Overview of Digital Relays ISO Training John S. Levine, P.E. Levine Lectronics & Lectric"— Presentation transcript:

1 1 Overview of Digital Relays ISO Training John S. Levine, P.E. Levine Lectronics & Lectric

2 2 ISO Training July 22, 2008 Outline Introduction Overview of Digital Relays Tools Enervista Launchpad PowerPoint presentations at GE Digital Relays Protection Basics SR489 GE Multilin G30 Training Post Glover NGR Training ANSI Symbols handout Conversion of Electro-Mechanical to Electronic sheet GE Multilin Training CD’s

3 3 Trends 75% of Installed Base of Relays are Electromechanical 90% of New Relays Purchased are Digital/Electronic Lingering Issue of “Putting All Eggs In One Basket” –“No Backup” –“Like to See Disk Move” –Solve with Backup (such as DIAC as backup to SR760 or F60) –Gain Excellent Accuracy and No Setting Drift Manufacturers have Created Relay Families, thus reducing maintenance, O&M costs and training.

4 4 Microprocessor-Relay Benefits Multi-Function Protection Cost Effectiveness Configurable/Programmable Logic –User Configurable Time Current Curves Self-Testing of Relay’s Algorithms with Alarm Contact –Reduce Periodic Testing »Every 1-2 years for Electromechanical »Every 5-10 years for Digital (or More!) Improved System Data –Fault Location & Reporting- Waveform Capturing –Internal Operation Data- Metering –Breaker Health Monitoring- Demand Interval Records –Sequence of Event Reporting

5 5 Microprocessor-Relay Benefits Flexible Settings –Multiple Setting Levels Communication Capabilities –Local via Keypad –Remote via Computer and Modem –Networks can be created Reduced Panel Space & Wiring –Compact Packaging –Tested at Factory –Eliminate Component Panel Metering

6 6 Digital Relays - Areas Of Use Distribution Feeder Protection Reclosing Down Conductor Detection Breaker Failure Protection Generator Protection Transmission Line Protection Transformer Protection Bus Protection Motor Protection


8 8 Programmability Digital Relays Have: –Programmable Inputs –Programmable Outputs (ALARM & TRIP) –Programmable Logic »Boolean Logic - AND, OR, NOT Logic –Programmable Time Current Curves

9 9 Waveform Capturing Including Bar Plotting of Unit Operation

10 10 Metering 0.25 - 5% Accuracy on I & V Typical Values Can Be Accessed Locally or Remotely Some Relays Have Analog Outputs Proportional to Metering Values (i.e. 0-1mA) Current Voltage Watts, Vars, PF Frequency kWh, kVarh Phase Angles Min & Max Values with Date & Time Stamp Harmonic Values of I Symmetrical Components Operation Counters Breaker Position

11 11 Metering

12 12 Other Monitoring Breaker Health Monitoring –Cumulative I 2 T or IT –Activate Alarm At Set Level Demand Interval Reporting –15, 30, 60 Minute Intervals over Several Days –I, Watts, Vars, VA, PF Peak Values Recorded –Date & Time Stamped Trip & Close Coil Monitor Fault Location & Fault Reporting

13 13 Sequence Of Events Recording Events Stored with Date & Time: –Alarms –Contact Operations –Logins & Logouts –Waveform Captures –Remote Operations –Resets –Setting Changes Last 100-1000 Events Stored

14 14 Settings Easier Than Electromechanical/Static Flexible settings Relays Have Multiple Setting Groups –Can be Switched with Input Contacts or Remotely Settings Are Stored in Files and Down Loaded to Relay with PC Easy to Copy Existing Setting Files and Modify Accurate Implementation of Settings –No Overtravel –No Large Drifts in Set Points Selection of Reset Times –Fast (Digital) or Slow (Electromechanical)

15 15 Local Communications Thru Keypad, Up, Down Arrows, Enter/Select Keys or RS232 Port on Relay Local LED Display Reset Key/Button LED Targets Password Protection ENTER UP DN Phase TOC1 OP Phase A Phase B Alarm Phase C 87

16 16 Communications

17 17 Remote Communications Thru Rear RS232 or RS485 Port Using Standard Modem Software or Relay Manufacturer’s Communication Software Password Protection 10Mbps Ethernet Connections - Wire or Fiber Multiple Protocol Support (DNP3.0, Modbus RTU, Devicenet, Profibus, and IEC 61850) RELAY Modem DSL or Telephone

18 18 Substation Communications - LAN & WAN

19 19 Communications

20 20 Memory Map Example Group Address Description Current 0300 Phase A Current 0301 Phase B Current 0302 Phase C Current 030D Phase A Differential 030E Phase B Differential 030F Phase C Differential

21 21 Available Control by Digital Relays via Communications & Protocols Reset Data –Min/Max, Demand, etc. Reset Targets Operate Output Contacts Trip & Close Trigger Waveform Capture Set Date & Time Force Input Contact Operation Block Relay Functions Perform Setting Changes

22 22 Maintenance Benefits Self-Test Capabilities Remote Communications Easy Setting Changes One Model Could Be Used for Several Applications No Setting Drift of Digital Relay Reduced Wiring Flash Memory – Upgradeable Firmware

23 23 Today’s Feeder and Transformer Digital Relays

24 24 DIAC,DIFC,DSFC Single Phase Overcurrent Protection Digital Overcurrent Relay Platform w/ True RMS Overcurrent Measurement (50/51) Replace IAC, IFC and SFC relays... –Self Powered (no DC Battery Required) –Same case size, no metal modifications –Simply add surge ground lead User Selection of 16 curve characteristics –Exact Duplication of IAC51, IAC53 & IAC77 Characteristics Instantaneous Overcurrent Delay Setting Reset Characteristic Selection (Fast or E/M) Draw-out Case with Test Facilities Retrofit existing IAC, IFC and SFC Cases Very Low Burden (1.8VA) No Communications

25 25 SR760 - Feeder Protection 16 Samples/Cycle 3 Phase & Ground Overcurrent Protection Programmable Time Current Curves Over/Under Voltage Over/Under Frequency Synch Check 4 Shot Reclosing Fault Location 4 Setting Groups Analog Outputs/Input (8/1) Metering I, V, W, Var, VA, PF, Hz, Wh, Varh Waveform Capturing RS485 Communications DNP3.0 and Modbus RTU Protocols Flash Memory for Upgrades Drawout Construction Programmable Display Simulation Test Mode IRIG-B Time Sync

26 26 SR489 Generator Management Relay 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

27 27 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

28 28 SR745 - Transformer Protection 64 Samples/Cycle 3 Phase Differential Protection 3 Phase & Ground Overcurrent per Winding Adaptive Time Overcurrent Programmable Time Current Curves Loss of Life Monitoring (Opt.) 4 Setting Groups Harmonic Analysis (up to 25st) Angle & Zero Sequence Compensation Analog Outputs/Input (Opt.) 2 & 3 Winding Models Configurable Logic Waveform Capturing & Playback Simulation Test Mode Flash Memory for Upgrades RS485 Communications Modbus RTU and DNP3.0 Protocols Programmable Display Dynamic CT Ratio Correction IRIG-B Time Sync Transformer Management Relay SR745

29 29 L60 (Transmission Line: Phase Comparison)L60 (Transmission Line: Phase Comparison) L90 (Transmission Line: Current Differential)L90 (Transmission Line: Current Differential) D30, D60, abd D90 (Transmission Line: Distance)D30, D60, abd D90 (Transmission Line: Distance) B30 and B90 (Busbar: 6 to 24 Feeder)B30 and B90 (Busbar: 6 to 24 Feeder) TRANSMISSION F35 (Feeder: Multiple Feeders - Basic Protection)F35 (Feeder: Multiple Feeders - Basic Protection) F60 (Feeder: Comprehensive w Hi-Z)F60 (Feeder: Comprehensive w Hi-Z) T60 (Transformer: Comprehensive)T60 (Transformer: Comprehensive) C30 (Control IED)C30 (Control IED) C60 (Breaker Management IEDC60 (Breaker Management IED) DISTRIBUTION The UR Family - One Common Architecture G30 and G60 (Generator: Comprehensive)G30 and G60 (Generator: Comprehensive) T60 and T35 (Transformer: Basic up to 6 Windings)T60 and T35 (Transformer: Basic up to 6 Windings) B30 and B90 (Busbar: Comprehensive up to 24 Feeders)B30 and B90 (Busbar: Comprehensive up to 24 Feeders) M60 (Motor)M60 (Motor) GENERATION / MOTOR “The Engine for Substation / Plant Automation”

30 30 Modular Hardware Family

31 31 19’’ Chassis (4RU high) or Vertical Unit Physical Realization Physical Realization Power Supply CPU Main Processor DSP & Magnetics DSP processor + CT/VTs DIGITAL I/O Status Inputs / Control Outputs ANALOG I/O Analog Transducer I/O COMMUNICATIONS ModularHMI (Hinged & Removeable) High-Speed Data Bus Modules

32 32 Modularity... Modularity... Power Supply Two Ranges 19-60 VDC (L) 88-300 VDC / 88-288 VAC (H) Battery for Memory BackupCPUCPU Main Processor High-speed 32-Bit RISC CPU > 50 MIPS, up to 120 MIPS (MIPS - Million Instructions per Second) FLASH memory Easy firmware upgrades High-Speed Comms support 10Mbps Ethernet LAN Redundant Fiber (option) RS485 IRIG-B Input Capacitor Memory Backup DSP + CT/VT DSP & Magnetics DSP processor + CT/VTs Modular CT/VT configurations up to 8 CT/VTs High-speed digital sampling >16 Bit A/D converter > 64 samples / cycle High-speed 16-Bit DSP > 32 MIPS, up to 80 MIPS “Sources” Concept User Selects CT/VT Input for Protection Element

33 33 Control outputs Solid State Electromechanical - multiple types Fast activation speeds (< 4ms) Status inputs Dry and Wet contacts 18 - 300 VDC Fast detection speeds (< 4ms) DIGITAL I/O Status Inputs / Control Outputs Digital I/O Transducer type inputs dcmA RTD Support multiple I/O configurations Analog I/O ANALOG I/O Analog Transducer I/O CommunicationsCOMMUNICATIONS(Protection) High-Speed Serial Communications L90 Relay RS422 at 64kbps G.703 at 64kbps Fiber Optical (Single/Multi mode) 820nm Multi-mode 1300nm Single-mode 1300nm Multi-mode G.703 RS422 L60 Relay 5V/20mA Channel Interface Modularity... ! Modularity... !

34 34‘Upgradeability’/Serviceability CT Shorting ‘Clips’ Field Wiring Undisturbed Module Keying ‘Plug n Play’ Easy Module Draw-out CPU Automatically Recognizes New Hardware upon Initialization

35 35 Example: Busbar with 5 Feeders 79

36 36 CT1 VT1 CT2 CT3 CT4 CT5 Example: Inputs in to UR Relay

37 37 50-Inst, 51-Time, 81-Freq, 79- Reclose Universal Relay Example: UR Relay using Sources 79

38 38 F60 Feeder Protection Single Feeder Protection with Bus Voltage Phase, Neutral & Ground Time Overcurrent (51P, 51N, 51G) Phase, Neutral & Ground Inst.Overcurrent (50P, 50N, 50G) Negative Sequence Time Overcurrent (51_2) Negative Sequence Inst.Overcurrent (50_2) Fast or EM Reset Characteristic for TOC Elements Phase, Neutral and Negative Sequence Directional Control Phase Undervoltage & Overvoltage Negative Sequence Overvoltage Underfrequency (6 elements) Overfrequency 4 Shot Autoreclosing with Sequence Coordination VT Fuse Failure Programmable Fast & Slow Operations Breaker Failure (50BF) Synchrocheck (25) Cold Load Pickup Breaker Arcing Current (I2t) Data Logger & Fault Location Transducer I/O FlexLogic with gates and timers Programmable LED Panels Metering Harmonic Metering (up to 25 th ) Oscillography Event Recorder & Fault Records Demand Recording DNP, Modbus RTU & UCA Protocols 8 Setting Groups Down Conductor Detection (Optional)

39 39 5 Feeder Protection with Bus Voltage 6 Feeder Protection w/o Bus Voltage Programmable LED Panels (6) Phase TOC elements (12) Phase IOC elements (6) Neutral TOC elements (12) Neutral IOC elements (6) Ground TOC elements (12) Ground IOC elements (1)Phase Undervoltage element (6)Underfrequency elements (6)Autoreclosing elements FlexLogic with gates and timers Transducer I/O Data Logger Metering Oscillography Event Recorder Demand Recording DNP, Modbus RTU & UCA Protocols 8 Setting Groups F35 Multiple Feeder Protection

40 40 LEDProgrammability

41 41 Up to 4 Restraint Inputs 2 & 3 Restraint with Three Phase Voltage Inputs 4 Restraint without Voltage Inputs Dual Slope Percent Differential Protection (87T) Harmonic Inhibit Feature Overexitation Inhibit Feature Instantaneous Differential Element (50/87) Overcurrent Protection Per Winding (50/51) Phase, Neutral & Ground Time Overcurrent Phase, Neutral & Ground Inst.Overcurrent Fast or EM Reset Characteristic for TOC Elements Phase Undervoltage Phase Overvoltage Phase & Neutral Directional OC Volts/Hz Restricted Ground Fault RTD and dcmA Inputs Available Underfrequency (6 elements) Data Logger FlexLogic with gates and timers Programmable LED Panels Metering per Winding (I, V, W, Var, VA, PF) Harmonic Metering (up to 25 th ) Differential and Restraint Currents Oscillography & Event Recorder Demand Recording DNP, Modbus RTU & UCA Protocols 8 Setting Groups T60 Transformer Protection

42 42 UR Applications Option 1 T60 - Transformer Protection F60 - Main Feeder Protection F35 - Backup Feeder Protection

43 43 UR Applications Option 2 T60 - Transformer Protection F35 - Main Feeder Protection F35 - Backup Feeder Protection

44 44 Tools

45 45 Windows based Access all: –Actual Values –Setpoints –Status –Event records Oscillography Graphical trending Setpoint programming Setpoint files Download updated firmware to Flash memory Free PC Software and Firmware

46 46

47 47

48 48 Enervista Launchpad: launchpad/ launchpad/

49 49

50 50

51 51 Demo Relays at L-3

52 52 ANSI Symbols

53 53 Conversion of Electro-Mechanical to Electronic sheet

54 54 PowerPoint presentations at:

55 55 GE Multilin Training CD’s

56 56 Thank You Questions?

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