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Calculation

Idiff and Ibias

Calculation

instantaneous

Idiff

Start and

trip logic

TRIP

Signals

START

Signals

BLOCK

Signals

Intern/

extern

Fault

Phasors IL1N, IL2N,IL3N

Phasors IL1T, IL2T,IL3T

Samples IL1N, IL2N,IL3N

Samples IAT, IBT,ICT

Magnitude

Idiff and Ibias

Samples Idiff

Diff.prot.

characteristic

Hamonic

analysis: DC,

2nd and 5th

Start

phase

selective

Phasor IL1N (neg.seq.)

Phasor IL1T (neg.seq.)

Internal/

External Fault

Discriminator

and Sensitive

differential

protection

Calculation

negative

sequence

Idiff

Harm.

Block

Analog

Outputs

INTFAULT

EXTFAULT

OPENCT

OPENCTAL

en06000434-2.vsd

The sensitive protection is deactivated

above bias current > 150 % rated

current.

IEC06000434 V3 EN

Figure 56: Principle design of the generator differential protection

Simplified logic diagrams of the function is shown in figures below.

1MRK 502 048-UEN A Section 6

Differential protection

135

Technical manual

Main Page

Default Chapter7
- Table of Contents7
Section 1 Introduction37
- This Manual37
- Intended Audience37
- Product Documentation38
- Symbols and Conventions40
  - Symbols40
  - Document Conventions41
Section 2 Available Functions43
- Main Protection Functions43
- Back-Up Protection Functions43
- Control and Monitoring Functions44
- Station Communication48
- Basic IED Functions49
Section 3 Analog Inputs51
- Introduction51
- Operation Principle51
- Presumptions for Technical Data52
- Settings53
Section 4 Binary Input and Output Modules59
- Binary Input59
Section 5 Local Human-Machine-Interface LHMI65
- Local HMI Screen Behaviour65
  - Identification65
  - Settings65
- Local HMI Signals65
Section 6 Differential Protection87
- Transformer Differential Protection87
- Restricted Earth-Fault Protection, Low Impedance REFPDIF115
- 1Ph High Impedance Differential Protection HZPDIF124
- Generator Differential Protection GENPDIF127
Section 7 Impedance Protection145
- Power Swing Detection ZMRPSB145
- Load Encroachment LEPDIS179
Section 8 Current Protection183
- Four Step Phase Overcurrent Protection 3-Phase Output OC4PTOC183
- Four Step Residual Overcurrent Protection, Zero, Negative Sequence Direction EF4PTOC192
- Sensitive Directional Residual Overcurrent and Power Protection SDEPSDE209
- Thermal Overload Protection, Two Time Constants TRPTTR220
- Breaker Failure Protection 3-Phase Activation and Output CCRBRF227
- Pole Discordance Protection CCRPLD233
- Directional Over-/Under-Power Protection GOPPDOP/GUPPDUP237
- Accidental Energizing Protection for Synchronous Generator AEGGAPC245
- Negative-Sequence Time Overcurrent Protection for Machines NS2PTOC249
Section 9 Voltage Protection263
- Two Step Undervoltage Protection UV2PTUV263
- Two Step Residual Overvoltage Protection ROV2PTOV276
- Overexcitation Protection OEXPVPH281
- 100% Stator Earth Fault Protection, 3Rd Harmonic Based STEFPHIZ285291
Section 10 Frequency Protection301
- Underfrequency Protection SAPTUF301
Section 11 Secondary System Supervision313
- Fuse Failure Supervision SDDRFUF313
- Breaker Close/Trip Circuit Monitoring TCSSCBR324
Section 12 Control327
- Synchrocheck, Energizing Check, and Synchronizing SESRSYN327
- Apparatus Control344
- Interlocking361
- Logic Rotating Switch for Function Selection and LHMI Presentation SLGGIO420
- Selector Mini Switch VSGGIO423
- IEC 61850 Generic Communication I/O Functions DPGGIO426
- Single Point Generic Control 8 Signals SPC8GGIO427
- Automation Bits AUTOBITS429
- Function Commands for IEC 60870-5-103 I103CMD432
- IED Commands for IEC 60870-5-103 I103IEDCMD433
- Function Commands User Defined for IEC 60870-5-103434
- I103Usrcmd434
- IED Commands with Position and Select for IEC 60870-5-103 I103POSCMD436
Section 13 Logic439
- Tripping Logic Common 3-Phase Output SMPPTRC439
- Trip Matrix Logic TMAGGIO441
- Configurable Logic Blocks445
  - Standard Configurable Logic Blocks445
  - Technical Data458
- Fixed Signals FXDSIGN459
- Boolean 16 to Integer Conversion B16I460
- Boolean 16 to Integer Conversion with Logic Node Representation B16IFCVI463
- Integer to Boolean 16 Conversion IB16A466
- Integer to Boolean 16 Conversion with Logic Node Representation IB16FCVB469
- Elapsed Time Integrator with Limit Transgression and Overflow Supervision TEIGGIO471
Section 14 Monitoring477
- Measurements477
  - Functionality477
  - Measurements CVMMXN478
  - Phase Current Measurement CMMXU483
  - Phase-Phase Voltage Measurement VMMXU486
  - Current Sequence Component Measurement CMSQI488
  - Voltage Sequence Measurement VMSQI490
  - Phase-Neutral Voltage Measurement VNMMXU493
  - Operation Principle495
  - Technical Data506
- Event Counter CNTGGIO507
  - Identification507
  - Functionality507
  - Function Block507
  - Signals507
  - Settings508
  - Monitored Data508
  - Operation Principle508
    - Reporting509
  - Technical Data509
- Function Description509
  - Limit Counter L4UFCNT509
  - Introduction509
  - Principle of Operation510
    - Design510
    - Reporting511
  - Function Block511
  - Signals512
  - Settings512
  - Monitored Data513
  - Technical Data513
- Disturbance Report513
  - Functionality513
  - Disturbance Report DRPRDRE514
  - Analog Input Signals Axradr518
  - Analog Input Signals A4RADR523
  - Binary Input Signals Bxrbdr528
  - Operation Principle534
  - Technical Data541
- Indications541
  - Functionality541
  - Function Block542
  - Signals542
    - Input Signals542
  - Operation Principle542
  - Technical Data543
- Event Recorder543
  - Functionality543
  - Function Block543
  - Signals543
    - Input Signals543
  - Operation Principle543
  - Technical Data544
- Event List544
  - Functionality544
  - Function Block544
  - Signals545
    - Input Signals545
  - Operation Principle545
  - Technical Data545
- Trip Value Recorder545
  - Functionality545
  - Function Block546
  - Signals546
    - Input Signals546
  - Operation Principle546
  - Technical Data547
- Disturbance Recorder547
  - Functionality547
  - Function Block547
  - Signals547
  - Settings547
  - Operation Principle548
    - Memory and Storage548
  - Technical Data550
- IEC 61850 Generic Communication I/O Functions SPGGIO550
  - Identification550
  - Functionality550
  - Function Block550
  - Signals550
  - Settings551
  - Operation Principle551
- IEC 61850 Generic Communication I/O Functions 16 Inputs SP16GGIO551
  - Identification551
  - Functionality551
  - Function Block551
  - Signals552
  - Settings552
  - Monitoreddata552
  - Operation Principle553
- IEC 61850 Generic Communication I/O Functions MVGGIO553
  - Identification553
  - Functionality554
  - Function Block554
  - Signals554
  - Settings554
  - Monitored Data555
  - Operation Principle555
- Measured Value Expander Block MVEXP555
  - Identification555
  - Functionality556
  - Function Block556
  - Signals556
  - Settings556
  - Operation Principle557
- Station Battery Supervision SPVNZBAT557
  - Identification557
  - Function Block557
  - Functionality557
  - Signals558
  - Settings558
  - Measured Values559
  - Monitored Data559
  - Operation Principle559
  - Technical Data560
- Insulation Gas Monitoring Function SSIMG560
  - Identification560
  - Functionality561
  - Function Block561
  - Signals561
  - Settings562
  - Operation Principle562
  - Technical Data563
- Insulation Liquid Monitoring Function SSIML563
  - Identification563
  - Functionality563
  - Function Block563
  - Signals564
  - Settings564
  - Operation Principle565
  - Technical Data565
- Circuit Breaker Condition Monitoring SSCBR565
  - Identification565
  - Functionality566
  - Function Block566
  - Signals566
  - Settings567
  - Monitored Data568
  - Operation Principle569
  - Technical Data579
- Measurands for IEC 60870-5-103 I103MEAS579
  - Functionality579
  - Function Block580
  - Signals581
  - Settings581
- Measurands User Defined Signals for IEC 60870-5-103582
- I103Measusr582
  - Functionality582
  - Function Block582
  - Signals582
  - Settings583
- Function Status Auto-Recloser for IEC 60870-5-103 I103AR583
  - Functionality583
  - Function Block583
  - Signals584
  - Settings584
- Function Status Earth-Fault for IEC 60870-5-103 I103EF584
  - Functionality584
  - Function Block584
  - Settings585
- Function Status Fault Protection for IEC 60870-5-103585
- I103Fltprot585
  - Functionality585
  - Function Block586
  - Signals586
  - Settings587
- IED Status for IEC 60870-5-103 I103IED587
  - Functionality587
  - Function Block588
  - Signals588
  - Settings588
- Supervison Status for IEC 60870-5-103 I103SUPERV588
  - Functionality588
  - Function Block589
  - Signals589
  - Settings589
  - Functionality589
  - Function Block590
  - Signals590
  - Settings591
Section 15 Metering593
- Pulse Counter PCGGIO593
- Energy Calculation and Demand Handling ETPMMTR596
Section 16 Station Communication601
- DNP3 Protocol601
- IEC 61850-8-1 Communication Protocol601
- Horizontal Communication Via GOOSE for Interlocking603
- Goose Binary Receive GOOSEBINRCV606
- GOOSE Function Block to Receive a Double Point Value GOOSEDPRCV609
- GOOSE Function Block to Receive an Integer Value GOOSEINTRCV610
- GOOSE Function Block to Receive a Measurand Value GOOSEMVRCV612
- GOOSE Function Block to Receive a Single Point Value GOOSESPRCV613
- IEC 60870-5-103 Communication Protocol615
  - Functionality615
  - Settings616
- IEC 61850-8-1 Redundant Station Bus Communication616
- Activity Logging Parameters ACTIVLOG619
  - Activity Logging ACTIVLOG619
  - Settings619
- Generic Security Application Component AGSAL620
  - Generic Security Application AGSAL620
- Security Events on Protocols SECALARM620
Section 17 Basic IED Functions621
- Self Supervision with Internal Event List621
- Time Synchronization628
- Parameter Setting Group Handling635
- Test Mode Functionality TESTMODE638
- Change Lock Function CHNGLCK640
- IED Identifiers TERMINALID642
- Product Information643
- Primary System Values PRIMVAL643
  - Functionality644
  - Settings644
- Signal Matrix for Analog Inputs SMAI644
- Summation Block 3 Phase 3PHSUM652
- Global Base Values GBASVAL653
Section 18 IED Physical Connections665
- Protective Earth Connections665
- Inputs665
- Outputs670
- Communication Connections675
- Connection Diagrams677
Section 19 Technical Data679
- Dimensions679
- Power Supply679
- Energizing Inputs680
- Binary Inputs680
- Signal Outputs681
- Power Outputs681
- Data Communication Interfaces682
- Enclosure Class683
- Ingress Protection683
- Environmental Conditions and Tests684
Section 20 IED and Functionality Tests685
- Electromagnetic Compatibility Tests685
- Insulation Tests687
- Mechanical Tests687
- Product Safety687
- EMC Compliance688
Section 21 Time Inverse Characteristics689
- Application689
- Operation Principle692
  - Mode of Operation692
- Inverse Time Characteristics695
Section 22 Glossary719

ABB REG650 - Page 141

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