GE UR Series L90 User manual

831776A2.CDR
L90 Line Current Differential
System
UR Series Instruction Manual
L90 revision: 7.1x
Manual P/N: 1601-0081-Z1 (GEK-119522)
GE Digital Energy
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Tel: [phone] Fax: [phone]
Internet: http://www.GEDigitalEnergy.com
GE Multilin's Quality Management
System is registered to ISO
9001:2008
QMI # 005094
UL # A3775
*1601-0081-Z1*
LISTED
52TL
IND.CONT. EQ.
E83849
GE
Digital Energy

Copyright © 2013 GE Multilin Inc. All rights reserved.
L90 Line Current Differential System UR Series Instruction Manual revision 7.1x.
FlexLogic, FlexElement, FlexCurve, FlexAnalog, FlexInteger, FlexState, EnerVista,
CyberSentry, HardFiber, Digital Energy, Multilin, and GE Multilin are trademarks
or registered trademarks of GE Multilin Inc.
The contents of this manual are the property of GE Multilin Inc. This
documentation is furnished on license and may not be reproduced in whole or
in part without the permission of GE Multilin. The content of this manual is for
informational use only and is subject to change without notice.
Part number: 1601-0081-Z1 (March 2013)

GE Multilin L90 Line Current Differential System iii
TABLE OF CONTENTS
0. BATTERY DISPOSAL 0.1 BATTERY DISPOSAL
1. GETTING STARTED 1.1 IMPORTANT PROCEDURES
1.1.1 CAUTIONS AND WARNINGS ........................................................................... 1-1
1.2 UR OVERVIEW
1.2.1 INTRODUCTION TO THE UR ........................................................................... 1-3
1.2.2 HARDWARE ARCHITECTURE ......................................................................... 1-3
1.2.3 SOFTWARE ARCHITECTURE.......................................................................... 1-5
1.2.4 IMPORTANT CONCEPTS ................................................................................. 1-5
1.3 ENERVISTA UR SETUP SOFTWARE
1.3.1 PC REQUIREMENTS ........................................................................................ 1-6
1.3.2 INSTALLATION.................................................................................................. 1-6
1.3.3 CONFIGURING THE L90 FOR SOFTWARE ACCESS..................................... 1-7
1.3.4 USING THE QUICK CONNECT FEATURE..................................................... 1-10
1.3.5 CONNECTING TO THE L90 RELAY ............................................................... 1-16
1.4 UR HARDWARE
1.4.1 MOUNTING AND WIRING............................................................................... 1-17
1.4.2 COMMUNICATIONS........................................................................................ 1-17
1.4.3 FACEPLATE DISPLAY .................................................................................... 1-17
1.5 USING THE RELAY
1.5.1 FACEPLATE KEYPAD..................................................................................... 1-18
1.5.2 MENU NAVIGATION ....................................................................................... 1-18
1.5.3 MENU HIERARCHY ........................................................................................ 1-18
1.5.4 RELAY ACTIVATION....................................................................................... 1-18
1.5.5 RELAY PASSWORDS ..................................................................................... 1-19
1.5.6 FLEXLOGIC CUSTOMIZATION ...................................................................... 1-19
1.5.7 COMMISSIONING ........................................................................................... 1-20
2. PRODUCT DESCRIPTION 2.1 INTRODUCTION
2.1.1 OVERVIEW........................................................................................................ 2-1
2.1.2 FEATURES ........................................................................................................ 2-3
2.1.3 ORDERING........................................................................................................ 2-4
2.1.4 REPLACEMENT MODULES ........................................................................... 2-12
2.2 PILOT CHANNEL RELAYING
2.2.1 INTER-RELAY COMMUNICATIONS............................................................... 2-15
2.2.2 CHANNEL MONITOR ...................................................................................... 2-16
2.2.3 LOOPBACK TEST ........................................................................................... 2-17
2.2.4 DIRECT TRANSFER TRIPPING ..................................................................... 2-17
2.3 FUNCTIONALITY
2.3.1 PROTECTION AND CONTROL FUNCTIONS ................................................ 2-18
2.3.2 METERING AND MONITORING FUNCTIONS ............................................... 2-18
2.3.3 OTHER FUNCTIONS....................................................................................... 2-19
2.4 SPECIFICATIONS
2.4.1 PROTECTION ELEMENTS ............................................................................. 2-20
2.4.2 USER-PROGRAMMABLE ELEMENTS........................................................... 2-25
2.4.3 MONITORING.................................................................................................. 2-26
2.4.4 METERING ...................................................................................................... 2-27
2.4.5 INPUTS ............................................................................................................ 2-28
2.4.6 POWER SUPPLY ............................................................................................ 2-29
2.4.7 OUTPUTS ........................................................................................................ 2-29
2.4.8 COMMUNICATIONS........................................................................................ 2-30
2.4.9 INTER-RELAY COMMUNICATIONS............................................................... 2-31
2.4.10 ENVIRONMENTAL .......................................................................................... 2-31
2.4.11 TYPE TESTS ................................................................................................... 2-32
2.4.12 PRODUCTION TESTS .................................................................................... 2-32
2.4.13 APPROVALS ................................................................................................... 2-33
2.4.14 MAINTENANCE ............................................................................................... 2-33

iv L90 Line Current Differential System GE Multilin
TABLE OF CONTENTS
3. HARDWARE 3.1 DESCRIPTION
3.1.1 PANEL CUTOUT ................................................................................................3-1
3.1.2 MODULE WITHDRAWAL AND INSERTION......................................................3-6
3.1.3 REAR TERMINAL LAYOUT ...............................................................................3-8
3.2 WIRING
3.2.1 TYPICAL WIRING ..............................................................................................3-9
3.2.2 DIELECTRIC STRENGTH................................................................................3-10
3.2.3 CONTROL POWER..........................................................................................3-10
3.2.4 CT/VT MODULES.............................................................................................3-11
3.2.5 PROCESS BUS MODULES .............................................................................3-13
3.2.6 CONTACT INPUTS AND OUTPUTS................................................................3-13
3.2.7 TRANSDUCER INPUTS AND OUTPUTS........................................................3-21
3.2.8 RS232 FACEPLATE PORT..............................................................................3-22
3.2.9 CPU COMMUNICATION PORTS.....................................................................3-22
3.2.10 IRIG-B...............................................................................................................3-25
3.3 PILOT CHANNEL COMMUNICATIONS
3.3.1 DESCRIPTION .................................................................................................3-26
3.3.2 FIBER: LED AND ELED TRANSMITTERS ......................................................3-27
3.3.3 FIBER-LASER TRANSMITTERS .....................................................................3-27
3.3.4 G.703 INTERFACE...........................................................................................3-28
3.3.5 RS422 INTERFACE .........................................................................................3-31
3.3.6 TWO-CHANNEL TWO-CLOCK RS422 INTERFACE.......................................3-33
3.3.7 RS422 AND FIBER INTERFACE .....................................................................3-33
3.3.8 G.703 AND FIBER INTERFACE ......................................................................3-34
3.3.9 IEEE C37.94 INTERFACE................................................................................3-34
3.3.10 C37.94SM INTERFACE ...................................................................................3-38
4. HUMAN INTERFACES 4.1 ENERVISTA UR SETUP SOFTWARE INTERFACE
4.1.1 INTRODUCTION ................................................................................................4-1
4.1.2 CREATING A SITE LIST ....................................................................................4-1
4.1.3 ENERVISTA UR SETUP OVERVIEW ................................................................4-1
4.1.4 ENERVISTA UR SETUP MAIN WINDOW..........................................................4-3
4.2 EXTENDED ENERVISTA UR SETUP FEATURES
4.2.1 SETTINGS TEMPLATES ...................................................................................4-4
4.2.2 SECURING AND LOCKING FLEXLOGIC EQUATIONS....................................4-8
4.2.3 SETTINGS FILE TRACEABILITY.....................................................................4-10
4.3 FACEPLATE INTERFACE
4.3.1 FACEPLATE .....................................................................................................4-13
4.3.2 LED INDICATORS............................................................................................4-14
4.3.3 CUSTOM LABELING OF LEDS .......................................................................4-17
4.3.4 DISPLAY...........................................................................................................4-23
4.3.5 KEYPAD ...........................................................................................................4-23
4.3.6 BREAKER CONTROL ......................................................................................4-23
4.3.7 MENUS.............................................................................................................4-24
4.3.8 CHANGING SETTINGS ...................................................................................4-26
5. SETTINGS 5.1 OVERVIEW
5.1.1 SETTINGS MAIN MENU ....................................................................................5-1
5.1.2 INTRODUCTION TO ELEMENTS......................................................................5-4
5.1.3 INTRODUCTION TO AC SOURCES..................................................................5-5
5.2 PRODUCT SETUP
5.2.1 SECURITY..........................................................................................................5-8
5.2.2 CYBERSENTRY SECURITY............................................................................5-12
5.2.3 DISPLAY PROPERTIES ..................................................................................5-18
5.2.4 CLEAR RELAY RECORDS ..............................................................................5-19
5.2.5 COMMUNICATIONS ........................................................................................5-21
5.2.6 MODBUS USER MAP ......................................................................................5-50
5.2.7 REAL TIME CLOCK .........................................................................................5-50

GE Multilin L90 Line Current Differential System v
TABLE OF CONTENTS
5.2.8 FAULT REPORTS ........................................................................................... 5-56
5.2.9 OSCILLOGRAPHY .......................................................................................... 5-58
5.2.10 DATA LOGGER ............................................................................................... 5-61
5.2.11 DEMAND.......................................................................................................... 5-62
5.2.12 USER-PROGRAMMABLE LEDS..................................................................... 5-63
5.2.13 USER-PROGRAMMABLE SELF-TESTS ........................................................ 5-67
5.2.14 CONTROL PUSHBUTTONS ........................................................................... 5-67
5.2.15 USER-PROGRAMMABLE PUSHBUTTONS ................................................... 5-69
5.2.16 FLEX STATE PARAMETERS.......................................................................... 5-74
5.2.17 USER-DEFINABLE DISPLAYS ....................................................................... 5-75
5.2.18 INSTALLATION................................................................................................ 5-77
5.3 REMOTE RESOURCES
5.3.1 REMOTE RESOURCES CONFIGURATION................................................... 5-78
5.4 SYSTEM SETUP
5.4.1 AC INPUTS ...................................................................................................... 5-79
5.4.2 POWER SYSTEM............................................................................................ 5-80
5.4.3 SIGNAL SOURCES ......................................................................................... 5-81
5.4.4 87L POWER SYSTEM..................................................................................... 5-84
5.4.5 BREAKERS...................................................................................................... 5-90
5.4.6 DISCONNECT SWITCHES ............................................................................. 5-94
5.4.7 FLEXCURVES ................................................................................................. 5-97
5.4.8 PHASOR MEASUREMENT UNIT.................................................................. 5-104
5.5 FLEXLOGIC
5.5.1 INTRODUCTION TO FLEXLOGIC ................................................................ 5-127
5.5.2 FLEXLOGIC RULES ...................................................................................... 5-140
5.5.3 FLEXLOGIC EVALUATION ........................................................................... 5-140
5.5.4 FLEXLOGIC EXAMPLE ................................................................................. 5-141
5.5.5 FLEXLOGIC EQUATION EDITOR................................................................. 5-145
5.5.6 FLEXLOGIC TIMERS .................................................................................... 5-145
5.5.7 FLEXELEMENTS........................................................................................... 5-146
5.5.8 NON-VOLATILE LATCHES ........................................................................... 5-150
5.6 GROUPED ELEMENTS
5.6.1 OVERVIEW.................................................................................................... 5-151
5.6.2 SETTING GROUP ......................................................................................... 5-151
5.6.3 LINE DIFFERENTIAL ELEMENT................................................................... 5-152
5.6.4 LINE PICKUP................................................................................................. 5-158
5.6.5 DISTANCE ..................................................................................................... 5-160
5.6.6 POWER SWING DETECT............................................................................. 5-178
5.6.7 LOAD ENCROACHMENT.............................................................................. 5-187
5.6.8 PHASE CURRENT ........................................................................................ 5-189
5.6.9 NEUTRAL CURRENT.................................................................................... 5-199
5.6.10 WATTMETRIC GROUND FAULT.................................................................. 5-207
5.6.11 GROUND CURRENT..................................................................................... 5-210
5.6.12 NEGATIVE SEQUENCE CURRENT ............................................................. 5-216
5.6.13 BREAKER FAILURE...................................................................................... 5-222
5.6.14 VOLTAGE ELEMENTS.................................................................................. 5-231
5.6.15 SENSITIVE DIRECTIONAL POWER............................................................. 5-237
5.6.16 SUPERVISING ELEMENTS .......................................................................... 5-241
5.7 CONTROL ELEMENTS
5.7.1 OVERVIEW.................................................................................................... 5-245
5.7.2 TRIP BUS....................................................................................................... 5-245
5.7.3 SETTING GROUPS ....................................................................................... 5-247
5.7.4 SELECTOR SWITCH..................................................................................... 5-249
5.7.5 TRIP OUTPUT ............................................................................................... 5-255
5.7.6 UNDERFREQUENCY.................................................................................... 5-261
5.7.7 OVERFREQUENCY ...................................................................................... 5-262
5.7.8 FREQUENCY RATE OF CHANGE................................................................ 5-263
5.7.9 SYNCHROCHECK......................................................................................... 5-265
5.7.10 DIGITAL ELEMENTS..................................................................................... 5-269
5.7.11 DIGITAL COUNTERS .................................................................................... 5-272
5.7.12 MONITORING ELEMENTS ........................................................................... 5-274
5.7.13 PILOT SCHEMES .......................................................................................... 5-297
5.7.14 AUTORECLOSE ............................................................................................ 5-321

vi L90 Line Current Differential System GE Multilin
TABLE OF CONTENTS
5.8 INPUTS/OUTPUTS
5.8.1 CONTACT INPUTS ........................................................................................5-334
5.8.2 VIRTUAL INPUTS ..........................................................................................5-336
5.8.3 CONTACT OUTPUTS ....................................................................................5-337
5.8.4 VIRTUAL OUTPUTS ......................................................................................5-339
5.8.5 REMOTE DEVICES........................................................................................5-340
5.8.6 REMOTE INPUTS ..........................................................................................5-341
5.8.7 REMOTE DOUBLE-POINT STATUS INPUTS ...............................................5-342
5.8.8 REMOTE OUTPUTS ......................................................................................5-343
5.8.9 DIRECT INPUTS/OUTPUTS ..........................................................................5-343
5.8.10 RESETTING ...................................................................................................5-346
5.8.11 IEC 61850 GOOSE ANALOGS ......................................................................5-346
5.8.12 IEC 61850 GOOSE INTEGERS .....................................................................5-347
5.9 TRANSDUCER INPUTS AND OUTPUTS
5.9.1 DCMA INPUTS ...............................................................................................5-348
5.9.2 RTD INPUTS ..................................................................................................5-349
5.9.3 DCMA OUTPUTS ...........................................................................................5-351
5.10 TESTING
5.10.1 TEST MODE...................................................................................................5-354
5.10.2 FORCE CONTACT INPUTS...........................................................................5-355
5.10.3 FORCE CONTACT OUTPUTS.......................................................................5-356
5.10.4 CHANNEL TESTS ..........................................................................................5-357
5.10.5 PHASOR MEASUREMENT UNIT TEST VALUES.........................................5-357
6. ACTUAL VALUES 6.1 OVERVIEW
6.1.1 ACTUAL VALUES MAIN MENU.........................................................................6-1
6.2 STATUS
6.2.1 CONTACT INPUTS ............................................................................................6-4
6.2.2 VIRTUAL INPUTS ..............................................................................................6-4
6.2.3 REMOTE INPUTS ..............................................................................................6-4
6.2.4 REMOTE DOUBLE-POINT STATUS INPUTS ...................................................6-5
6.2.5 DIRECT INPUTS ................................................................................................6-5
6.2.6 CONTACT OUTPUTS ........................................................................................6-5
6.2.7 VIRTUAL OUTPUTS ..........................................................................................6-6
6.2.8 AUTORECLOSE.................................................................................................6-6
6.2.9 REMOTE DEVICES............................................................................................6-6
6.2.10 CHANNEL TESTS ..............................................................................................6-7
6.2.11 DIGITAL COUNTERS.........................................................................................6-8
6.2.12 SELECTOR SWITCHES ....................................................................................6-8
6.2.13 FLEX STATES....................................................................................................6-9
6.2.14 ETHERNET ........................................................................................................6-9
6.2.15 REAL TIME CLOCK SYNCHRONIZING ............................................................6-9
6.2.16 IEC 61850 GOOSE INTEGERS .......................................................................6-10
6.2.17 REMAINING CONNECTION STATUS .............................................................6-10
6.2.18 PARALLEL REDUNDANCY PROTOCOL (PRP) .............................................6-11
6.3 METERING
6.3.1 METERING CONVENTIONS ...........................................................................6-12
6.3.2 DIFFERENTIAL CURRENT..............................................................................6-15
6.3.3 SOURCES ........................................................................................................6-16
6.3.4 SENSITIVE DIRECTIONAL POWER ...............................................................6-21
6.3.5 SYNCHROCHECK ...........................................................................................6-21
6.3.6 TRACKING FREQUENCY................................................................................6-21
6.3.7 FREQUENCY RATE OF CHANGE ..................................................................6-21
6.3.8 FLEXELEMENTS™ ..........................................................................................6-22
6.3.9 IEC 61580 GOOSE ANALOG VALUES ...........................................................6-22
6.3.10 WATTMETRIC GROUND FAULT.....................................................................6-23
6.3.11 PHASOR MEASUREMENT UNIT ....................................................................6-23
6.3.12 RESTRICTED GROUND FAULT......................................................................6-24
6.3.13 TRANSDUCER INPUTS AND OUTPUTS........................................................6-24
6.4 RECORDS
6.4.1 FAULT REPORTS ............................................................................................6-25
6.4.2 EVENT RECORDS...........................................................................................6-25

GE Multilin L90 Line Current Differential System vii
TABLE OF CONTENTS
6.4.3 OSCILLOGRAPHY .......................................................................................... 6-26
6.4.4 DATA LOGGER ............................................................................................... 6-26
6.4.5 PHASOR MEASUREMENT UNIT RECORDS................................................. 6-26
6.4.6 BREAKER MAINTENANCE............................................................................. 6-27
6.5 PRODUCT INFORMATION
6.5.1 MODEL INFORMATION .................................................................................. 6-28
6.5.2 FIRMWARE REVISIONS ................................................................................. 6-28
7. COMMANDS AND
TARGETS
7.1 COMMANDS
7.1.1 COMMANDS MENU .......................................................................................... 7-1
7.1.2 VIRTUAL INPUTS.............................................................................................. 7-1
7.1.3 CLEAR RECORDS ............................................................................................ 7-2
7.1.4 SET DATE AND TIME ....................................................................................... 7-2
7.1.5 RELAY MAINTENANCE .................................................................................... 7-3
7.1.6 PHASOR MEASUREMENT UNIT ONE-SHOT.................................................. 7-3
7.1.7 SECURITY ......................................................................................................... 7-5
7.2 TARGETS
7.2.1 TARGETS MENU............................................................................................... 7-6
7.2.2 TARGET MESSAGES ....................................................................................... 7-6
7.2.3 RELAY SELF-TESTS......................................................................................... 7-6
8. SECURITY 8.1 USER ACCOUNTS
8.1.1 OVERVIEW........................................................................................................ 8-1
8.1.2 ENABLING THE SECURITY MANAGEMENT SYSTEM ................................... 8-1
8.1.3 ADDING A NEW USER ..................................................................................... 8-1
8.1.4 MODIFYING USER PRIVILEGES ..................................................................... 8-2
8.1.5 PASSWORD REQUIREMENTS ........................................................................ 8-3
8.2 CYBERSENTRY
8.2.1 OVERVIEW........................................................................................................ 8-4
8.2.2 SECURITY MENU ............................................................................................. 8-5
9. THEORY OF OPERATION 9.1 OVERVIEW
9.1.1 L90 DESIGN ...................................................................................................... 9-1
9.1.2 L90 ARCHITECTURE ........................................................................................ 9-1
9.1.3 REMOVAL OF DECAYING OFFSET................................................................. 9-2
9.1.4 PHASELET COMPUTATION............................................................................. 9-2
9.1.5 DISTURBANCE DETECTION............................................................................ 9-3
9.1.6 FAULT DETECTION .......................................................................................... 9-3
9.1.7 GROUND DIFFERENTIAL ELEMENT............................................................... 9-4
9.1.8 CLOCK SYNCHRONIZATION ........................................................................... 9-5
9.1.9 FREQUENCY TRACKING AND PHASE LOCKING .......................................... 9-6
9.1.10 FREQUENCY DETECTION ............................................................................... 9-7
9.1.11 PHASE DETECTION ......................................................................................... 9-7
9.1.12 PHASE LOCKING FILTER .............................................................................. 9-10
9.1.13 MATCHING PHASELETS................................................................................ 9-11
9.1.14 START-UP ....................................................................................................... 9-11
9.1.15 HARDWARE AND COMMUNICATION REQUIREMENTS ............................. 9-11
9.1.16 ONLINE ESTIMATE OF MEASUREMENT ERRORS ..................................... 9-12
9.1.17 CT SATURATION DETECTION ...................................................................... 9-13
9.1.18 CHARGING CURRENT COMPENSATION ..................................................... 9-13
9.1.19 DIFFERENTIAL ELEMENT CHARACTERISTICS........................................... 9-14
9.1.20 RELAY SYNCHRONIZATION.......................................................................... 9-15
9.2 OPERATING CONDITION CHARACTERISTICS
9.2.1 DESCRIPTION................................................................................................. 9-16
9.2.2 TRIP DECISION EXAMPLE............................................................................. 9-18
9.2.3 TRIP DECISION TEST .................................................................................... 9-18

viii L90 Line Current Differential System GE Multilin
TABLE OF CONTENTS
9.3 DISTANCE ELEMENTS
9.3.1 INTRODUCTION ..............................................................................................9-20
9.3.2 PHASOR ESTIMATION....................................................................................9-20
9.3.3 DISTANCE CHARACTERISTICS.....................................................................9-21
9.3.4 MEMORY POLARIZATION ..............................................................................9-25
9.3.5 DISTANCE ELEMENTS ANALYSIS.................................................................9-26
9.4 PHASE DISTANCE APPLIED TO POWER TRANSFORMERS
9.4.1 DESCRIPTION .................................................................................................9-30
9.4.2 EXAMPLE.........................................................................................................9-32
9.5 SINGLE-POLE TRIPPING
9.5.1 OVERVIEW ......................................................................................................9-34
9.5.2 PHASE SELECTION ........................................................................................9-37
9.5.3 COMMUNICATIONS CHANNELS FOR PILOT-AIDED SCHEMES.................9-38
9.5.4 PERMISSIVE ECHO SIGNALING....................................................................9-46
9.5.5 PILOT SCHEME / PHASE SELECTOR COORDINATION...............................9-47
9.5.6 CROSS-COUNTRY FAULT EXAMPLE............................................................9-48
9.6 FAULT LOCATOR
9.6.1 OVERVIEW ......................................................................................................9-49
9.6.2 MULTI-ENDED FAULT LOCATOR...................................................................9-49
9.6.3 SINGLE-ENDED FAULT LOCATOR ................................................................9-55
10. APPLICATION OF
SETTINGS
10.1 CT REQUIREMENTS
10.1.1 INTRODUCTION ..............................................................................................10-1
10.1.2 CALCULATION EXAMPLE 1............................................................................10-1
10.1.3 CALCULATION EXAMPLE 2............................................................................10-2
10.2 CURRENT DIFFERENTIAL (87L) SETTINGS
10.2.1 INTRODUCTION ..............................................................................................10-3
10.2.2 CURRENT DIFFERENTIAL PICKUP ...............................................................10-3
10.2.3 CURRENT DIFF RESTRAINT 1.......................................................................10-3
10.2.4 CURRENT DIFF RESTRAINT 2.......................................................................10-3
10.2.5 CURRENT DIFF BREAK POINT ......................................................................10-3
10.2.6 CT TAP .............................................................................................................10-4
10.2.7 BREAKER-AND-A-HALF..................................................................................10-6
10.2.8 DISTRIBUTED BUS PROTECTION.................................................................10-9
10.3 CHANNEL ASYMMETRY COMPENSATION USING GPS
10.3.1 DESCRIPTION ...............................................................................................10-10
10.3.2 COMPENSATION METHOD 1 .......................................................................10-10
10.3.3 COMPENSATION METHOD 2 .......................................................................10-11
10.3.4 COMPENSATION METHOD 3 .......................................................................10-11
10.4 DISTANCE BACKUP/SUPERVISION
10.4.1 DESCRIPTION ...............................................................................................10-13
10.4.2 PHASE DISTANCE ........................................................................................10-14
10.4.3 GROUND DISTANCE.....................................................................................10-15
10.5 PROTECTION SIGNALING SCHEMES
10.5.1 OVERVIEW ....................................................................................................10-17
10.5.2 DIRECT UNDER-REACHING TRANSFER TRIP (DUTT)..............................10-17
10.5.3 PERMISSIVE UNDER-REACHING TRANSFER TRIP (PUTT)......................10-17
10.5.4 PERMISSIVE OVER-REACHING TRANSFER TRIP (POTT)........................10-17
10.5.5 HYBRID POTT SCHEME (HYB-POTT)..........................................................10-18
10.5.6 DIRECTIONAL COMPARISON BLOCKING...................................................10-19
10.5.7 DIRECTIONAL COMPARISON UNBLOCKING .............................................10-20
10.6 SERIES COMPENSATED LINES
10.6.1 DISTANCE SETTINGS ON SERIES COMPENSATED LINES......................10-22
10.6.2 GROUND DIRECTIONAL OVERCURRENT ..................................................10-23
10.7 LINES WITH TAPPED TRANSFORMERS
10.7.1 DESCRIPTION ...............................................................................................10-24
10.7.2 TRANSFORMER LOAD CURRENTS ............................................................10-24
10.7.3 LV-SIDE FAULTS ...........................................................................................10-25
10.7.4 EXTERNAL GROUND FAULTS .....................................................................10-25

GE Multilin L90 Line Current Differential System ix
TABLE OF CONTENTS
10.8 INSTANTANEOUS ELEMENTS
10.8.1 INSTANTANEOUS ELEMENT ERROR DURING L90 SYNCHRONIZATION
....................................................................................................................... 10-26
10.9 PHASE DISTANCE THROUGH POWER TRANSFORMERS
10.9.1 PHASE DISTANCE PROTECTION ............................................................... 10-27
10.9.2 EXAMPLE ...................................................................................................... 10-28
11. COMMISSIONING 11.1 TESTING
11.1.1 CHANNEL TESTING ....................................................................................... 11-1
11.1.2 CLOCK SYNCHRONIZATION TESTS ............................................................ 11-2
11.1.3 CURRENT DIFFERENTIAL ............................................................................. 11-3
11.1.4 LOCAL-REMOTE RELAY TESTS ................................................................... 11-4
A. FLEXANALOG AND
FLEXINTEGER
PARAMETERS
A.1 PARAMETER LISTS
A.1.1 FLEXANALOG ITEMS .......................................................................................A-1
A.1.2 FLEXINTEGER ITEMS ....................................................................................A-15
B. MODBUS
COMMUNICATIONS
B.1 MODBUS RTU PROTOCOL
B.1.1 INTRODUCTION................................................................................................B-1
B.1.2 PHYSICAL LAYER.............................................................................................B-1
B.1.3 DATA LINK LAYER............................................................................................B-1
B.1.4 CRC-16 ALGORITHM........................................................................................B-2
B.2 MODBUS FUNCTION CODES
B.2.1 SUPPORTED FUNCTION CODES ...................................................................B-3
B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ...........B-3
B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H) ...........................................B-4
B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H) .......................................B-4
B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................B-5
B.2.6 EXCEPTION RESPONSES ...............................................................................B-5
B.3 FILE TRANSFERS
B.3.1 OBTAINING RELAY FILES VIA MODBUS ........................................................B-6
B.3.2 MODBUS PASSWORD OPERATION ...............................................................B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP .................................................................................B-9
B.4.2 DATA FORMATS .............................................................................................B-80
C. IEC 61850
COMMUNICATIONS
C.1 OVERVIEW
C.1.1 INTRODUCTION................................................................................................C-1
C.1.2 COMMUNICATION PROFILES .........................................................................C-1
C.2 SERVER DATA ORGANIZATION
C.2.1 OVERVIEW........................................................................................................C-2
C.2.2 GGIO1: DIGITAL STATUS VALUES .................................................................C-2
C.2.3 GGIO2: DIGITAL CONTROL VALUES ..............................................................C-2
C.2.4 GGIO3: DIGITAL STATUS AND ANALOG VALUES FROM RECEIVED GOOSE
DATA..................................................................................................................C-2
C.2.5 GGIO4: GENERIC ANALOG MEASURED VALUES.........................................C-2
C.2.6 MMXU: ANALOG MEASURED VALUES...........................................................C-3
C.2.7 PROTECTION AND OTHER LOGICAL NODES ...............................................C-3
C.3 SERVER FEATURES AND CONFIGURATION
C.3.1 BUFFERED/UNBUFFERED REPORTING........................................................C-5
C.3.2 FILE TRANSFER ...............................................................................................C-5
C.3.3 TIMESTAMPS AND SCANNING .......................................................................C-5

x L90 Line Current Differential System GE Multilin
TABLE OF CONTENTS
C.3.4 LOGICAL DEVICE NAME ................................................................................. C-5
C.3.5 LOCATION ........................................................................................................ C-5
C.3.6 LOGICAL NODE NAME PREFIXES.................................................................. C-6
C.3.7 CONNECTION TIMING ..................................................................................... C-6
C.3.8 NON-IEC 61850 DATA ...................................................................................... C-6
C.3.9 COMMUNICATION SOFTWARE UTILITIES..................................................... C-6
C.4 GENERIC SUBSTATION EVENT SERVICES: GSSE AND GOOSE
C.4.1 OVERVIEW ....................................................................................................... C-7
C.4.2 GSSE CONFIGURATION.................................................................................. C-7
C.4.3 FIXED GOOSE .................................................................................................. C-7
C.4.4 CONFIGURABLE GOOSE ................................................................................ C-7
C.4.5 ETHERNET MAC ADDRESS FOR GSSE/GOOSE ........................................ C-10
C.4.6 GSSE ID AND GOOSE ID SETTINGS............................................................C-10
C.5 IEC 61850 IMPLEMENTATION VIA ENERVISTA UR SETUP
C.5.1 OVERVIEW ..................................................................................................... C-11
C.5.2 CONFIGURING IEC 61850 SETTINGS .......................................................... C-12
C.5.3 ABOUT ICD FILES .......................................................................................... C-13
C.5.4 CREATING AN ICD FILE WITH ENERVISTA UR SETUP.............................. C-17
C.5.5 ABOUT SCD FILES......................................................................................... C-17
C.5.6 IMPORTING AN SCD FILE WITH ENERVISTA UR SETUP...........................C-20
C.6 ACSI CONFORMANCE
C.6.1 ACSI BASIC CONFORMANCE STATEMENT ................................................ C-22
C.6.2 ACSI MODELS CONFORMANCE STATEMENT............................................ C-22
C.6.3 ACSI SERVICES CONFORMANCE STATEMENT......................................... C-23
C.7 LOGICAL NODES
C.7.1 LOGICAL NODES TABLE ............................................................................... C-26
D. IEC 60870-5-104
COMMUNICATIONS
D.1 IEC 60870-5-104
D.1.1 INTEROPERABILITY DOCUMENT................................................................... D-1
D.1.2 POINT LIST ....................................................................................................... D-9
E. DNP COMMUNICATIONS E.1 DEVICE PROFILE DOCUMENT
E.1.1 DNP V3.00 DEVICE PROFILE .......................................................................... E-1
E.1.2 IMPLEMENTATION TABLE .............................................................................. E-4
E.2 DNP POINT LISTS
E.2.1 BINARY INPUT POINTS ................................................................................... E-8
E.2.2 BINARY AND CONTROL RELAY OUTPUT...................................................... E-9
E.2.3 COUNTERS..................................................................................................... E-10
E.2.4 ANALOG INPUTS............................................................................................ E-11
F. MISCELLANEOUS F.1 CHANGE NOTES
F.1.1 REVISION HISTORY......................................................................................... F-1
F.1.2 CHANGES TO THE L90 MANUAL.................................................................... F-2
F.2 ABBREVIATIONS
F.2.1 STANDARD ABBREVIATIONS ......................................................................... F-5
F.3 WARRANTY
F.3.1 GE MULTILIN WARRANTY............................................................................... F-9