GE DGP Series User manual

DGP
Digital Generator Protection Relay™
Instruction Manual
DGP Revisions:V210.12000P
V210.10000F
V211.32000J
V210.22000D
Manual P/N: GEK-100666D
Copyright © 2000 GE Power Management
GE Power Management
215 Anderson Avenue,Markham, Ontario
Canada L6E1B3
Tel:[phone]Fax:[phone]
Internet: http://www.GEindustrial.com/pm
All relays must be powered up at least once peryear
to avoid deterioration of electrolytic capacitors and
subsequent relay failure.
NOTE
Manufactured under an
ISO9002 Registered system.
g
GEPowerManagement

These instructions do not purport to cover all details or variations in equipment
nor provide for every possible contin
g
ency to be met in connection with
installation, operation, or maintenance. Should further information be desired
or should particular problems arise which are not covered sufficiently for the
purchaser’s purpose, the matter should be referred to the General Electric
Company.
To the extent required the products described herein meet applicable ANSI,
IEEE, and NEMA standards; but no such assurance is
g
iven with respect to
local codes and ordinances because they vary
g
reatly.

GE Power Management DGP Digital Generator Protection System
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TABLE OF CONTENTS
1. PRODUCT DESCRIPTION 1.1 GETTING STARTED
1.1.1 UNPACKING THE RELAY......................................................................... 1-1
1.1.2 ORDER CODES & SELECTION GUIDE...................................................1-2
1.1.3 SPECIAL MODELS.................................................................................... 1-3
DGP***AAA-0101 and DGP***AAA-0102....................................................... 1-3
DGP***ABA-0005 ........................................................................................... 1-3
1.1.4 DEC 1000 CONTACT EXPANSION UNIT................................................. 1-3
1.2 INTRODUCTION
1.2.1 GENERAL.................................................................................................. 1-4
1.2.2 APPLICATION........................................................................................... 1-4
1.3 PROTECTION FEATURES
1.3.1 DESCRIPTION .......................................................................................... 1-6
1.3.2 STATOR DIFFERENTIAL (87G)................................................................ 1-7
1.3.3 CURRENT UNBALANCE (46T)................................................................. 1-7
1.3.4 LOSS OF EXCITATION (40) ..................................................................... 1-7
1.3.5 ANTI-MOTORING (32) .............................................................................. 1-8
1.3.6 TIME OVERCURRENT WITH VOLTAGE RESTRAINT 51V.....................1-8
1.3.7 STATOR GROUND (64G/27TN) ............................................................... 1-8
1.3.8 GROUND OVERCURRENT (51GN) ......................................................... 1-9
1.3.9 OVEREXCITATION (24)............................................................................ 1-9
1.3.10 OVERVOLTAGE (59) .............................................................................. 1-10
1.3.11 UNDERVOLTAGE (27)............................................................................ 1-10
1.3.12 OVER AND UNDERFREQUENCY (81) ..................................................1-10
1.3.13 VOLTAGE TRANSFORMER FUSE FAILURE (VTFF)............................1-10
1.3.14 ACCIDENTAL ENERGIZATION (AE)...................................................... 1-11
1.4 OTHER FEATURES
1.4.1 INPUTS.................................................................................................... 1-17
1.4.2 OUTPUT RELAYS................................................................................... 1-17
1.4.3 START-UP SELF-TESTS........................................................................ 1-18
1.4.4 RUN-TIME SELF-TESTS......................................................................... 1-18
1.4.5 ADAPTIVE SAMPLING FREQUENCY.................................................... 1-19
1.4.6 TRIP CIRCUIT MONITOR....................................................................... 1-19
1.4.7 SEQUENCE OF EVENTS.......................................................................1-19
1.4.8 TIME SYNCHRONIZATION..................................................................... 1-20
1.4.9 FAULT REPORT & OSCILLOGRAPHY DATA........................................ 1-21
1.4.10 LOCAL MAN-MACHINE INTERFACE..................................................... 1-21
1.4.11 LOCAL PRINTER .................................................................................... 1-21
1.4.12 REMOTE COMMUNICATIONS............................................................... 1-22
1.4.13 REMOTE CONTROL............................................................................... 1-22
1.4.14 PASSWORD PROTECTION ................................................................... 1-22
1.4.15 REMOTE COMMUNICATIONS – MODBUS PROTOCOL...................... 1-22
1.5 ELEMENTARY DIAGRAMS
2. CALCULATION OF
SETTINGS 2.1 GENERAL
2.1.1 DESCRIPTION .......................................................................................... 2-1
2.2 CONFIGURATION SETTINGS
2.2.1 DESCRIPTION ........................................................................................ 2-10
101: UNITID – UNIT ID NUMBER ................................................................ 2-10
102: SYSFREQ – SYSTEM FREQUENCY.................................................. 2-10
103: SEL TVM – SELECT TRIP VOLTAGE MONITORING......................... 2-10
104: SEL TCM – SELECT TRIP CURRENT MONITORING........................ 2-10
105: SELPRIM – SELECT PRIMARY/SECONDARY UNITS....................... 2-10
106: CT RATIO – CURRENT TRANSFORMER RATIO...............................2-10

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107: VT RATIO – VOLTAGE TRANSFORMER RATIO................................ 2-10
108: COMMPORT – COMMUNICATIONS PORT........................................ 2-11
109: PHASE – PHASE DESIGNATION........................................................ 2-11
110: TIMESYNC – TIME SYNCHRONIZATION SOURCE...........................2-11
111: NUM FLTS – NUMBER OF FAULT EVENTS.......................................2-11
112: PREFLT – PREFAULT CYCLES..........................................................2-12
113: OSC TRIG – EXTERNAL OSCILLOGRAPHY TRIGGER ....................2-12
114: NOM VOLT – NOMINAL VOLTAGE.....................................................2-12
115: RATEDCUR – RATED CURRENT.......................................................2-12
116: VT CONN – VOLTAGE TRANSFORMER CONNECTION...................2-12
117: NCTRATIO – NEUTRAL CURRENT TRANSFORMER RATIO ...........2-12
2.2.2 EXAMPLE CONFIGURATION SETTINGS.............................................. 2-12
2.3 PROTECTION FUNCTION SETTINGS
2.3.1 TRIP AND ALARM OUTPUT RELAYS.................................................... 2-13
2.3.2 STATOR DIFFERENTIAL 87G................................................................ 2-13
2.3.3 CURRENT UNBALANCE ALARM 46A.................................................... 2-18
2.3.4 CURRENT UNBALANCE TRIP 46T........................................................2-18
2.3.5 LOSS OF EXCITATION 40, 40-1, 40-2 ...................................................2-20
2.3.6 ANTI-MOTORING (REVERSE POWER)................................................. 2-21
2.3.7 OVERCURRENT WITH VOLTAGE RESTRAINT (51V).......................... 2-22
2.3.8 STATOR GROUND FAULT 64G-1..........................................................2-28
2.3.9 STATOR GROUND FAULT 64G-2..........................................................2-28
2.3.10 STATOR GROUND FAULT 27TN ........................................................... 2-28
2.3.11 OVEREXCITATION ALARM (VOLTS/HERTZ: 24A) ............................... 2-29
2.3.12 OVEREXCITATION TRIP (VOLTS/HERTZ: 24T).................................... 2-29
2.3.13 OVERVOLTAGE 59.................................................................................2-34
2.3.14 UNDERVOLTAGE CUTOFF OF 81......................................................... 2-36
2.3.15 UNDERFREQUENCY 81-U..................................................................... 2-36
2.3.16 OVERFREQUENCY 81-O ....................................................................... 2-36
2.3.17 DIGITAL INPUT DI...................................................................................2-36
2.3.18 VOLTAGE TRANSFORMER FUSE FAILURE VTFF ..............................2-37
2.3.19 ACCIDENTAL ENERGIZATION AE ........................................................ 2-37
2.3.20 GROUND OVERCURRENT 51GN..........................................................2-38
2.3.21 UNDERVOLTAGE 27 .............................................................................. 2-38
2.4 COMMISSIONING
2.4.1 DGP***AAA SETTINGS TABLE ..............................................................2-41
2.4.2 DGP***ABA SETTINGS TABLE ..............................................................2-46
2.4.3 DGP***ACA SETTINGS TABLE .............................................................. 2-51
3. HARDWARE
DESCRIPTION 3.1 CASE ASSEMBLY
3.1.1 WARNING.................................................................................................. 3-1
3.1.2 CONSTRUCTION...................................................................................... 3-1
3.1.3 ELECTRICAL CONNECTIONS & INTERNAL WIRING............................. 3-1
3.1.4 IDENTIFICATION ...................................................................................... 3-1
3.2 CIRCUIT BOARD MODULES
3.2.1 WARNING.................................................................................................. 3-4
3.2.2 BASIC CONSTRUCTION .......................................................................... 3-4
3.2.3 IDENTIFICATION ...................................................................................... 3-4
3.3 XTM TEST PLUGS
3.3.1 DESCRIPTION .......................................................................................... 3-6
3.3.2 TERMINAL DESIGNATION....................................................................... 3-6
3.3.3 XTM TEST-CIRCUIT CONNECTIONS...................................................... 3-6
3.3.4 TEST PLUG INSERTION .......................................................................... 3-6

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3.4 INSTALLATION
3.4.1 RECEIVING, HANDLING, & STORAGE.................................................... 3-7
3.4.2 ENVIRONMENT ........................................................................................ 3-7
3.4.3 MOUNTING ............................................................................................... 3-7
3.4.4 EXTERNAL CONNECTIONS .................................................................... 3-7
3.4.5 EXTERNAL CONNECTIONS TEST.......................................................... 3-7
3.4.6 SURGE GROUND CONNECTIONS.......................................................... 3-7
4. ACCEPTANCE TESTS 4.1 INTRODUCTION
4.1.1 WARNING.................................................................................................. 4-1
4.1.2 GENERAL.................................................................................................. 4-1
a GENERAL TESTS..................................................................................... 4-1
b PROTECTION TESTS............................................................................... 4-1
4.2 TEST PREPARATION
4.2.1 TEST EQUIPMENT ................................................................................... 4-2
4.2.2 DRAWINGS & REFERENCES..................................................................4-2
a DRAWINGS............................................................................................... 4-2
b REFERENCES .......................................................................................... 4-2
4.2.3 EQUIPMENT GROUNDING ...................................................................... 4-2
4.2.4 REQUIRED SETTINGS............................................................................. 4-2
4.3 GENERAL INSTRUCTIONS
4.3.1 PROCEDURE............................................................................................ 4-3
4.3.2 SETTING CHANGES................................................................................. 4-3
4.3.3 ENTERING THE TEST MODE .................................................................. 4-4
4.3.4 EXITING THE TEST MODE ...................................................................... 4-4
4.4 USING GE-LINK
4.4.1 DESCRIPTION .......................................................................................... 4-5
4.4.2 HARDWARE SETUP................................................................................. 4-5
4.4.3 SOFTWARE SETUP.................................................................................. 4-5
a LOAD & START GE-LINK..........................................................................4-5
b SET UP A NEW TEST UNIT......................................................................4-5
4.4.4 RELAY SETUP.......................................................................................... 4-6
4.4.5 LOGGING INTO THE RELAY....................................................................4-6
4.4.6 SETTING CHANGES................................................................................. 4-7
4.4.7 ENTERING THE TEST MODE .................................................................. 4-7
4.4.8 EXITING THE TEST MODE ...................................................................... 4-7
4.5 INITIAL TEST SETUP
4.5.1 DESCRIPTION .......................................................................................... 4-8
4.6 GENERAL RELAY TESTS
4.6.1 NOTE......................................................................................................... 4-9
4.6.2 T1: MMI STATUS AND DISPLAY TESTING............................................. 4-9
a STATUS CHECK ....................................................................................... 4-9
b WARNING STATUS .................................................................................. 4-9
c DISPLAY TEST........................................................................................ 4-10
4.6.3 T2: DIGITAL OUTPUT TESTS ................................................................ 4-11
4.6.4 T3: DIGITAL INPUT TESTS .................................................................... 4-13
4.6.5 T4: AC SYSTEM INPUT TEST................................................................ 4-15
4.7 PROTECTION TESTS
4.7.1 DESCRIPTION ........................................................................................ 4-17
4.7.2 T5: GENERATOR DIFFERENTIAL TEST 87G ....................................... 4-18
4.7.3 T6: CURRENT UNBALANCE ALARM 46A ............................................. 4-20
4.7.4 T7: CURRENT UNBALANCE TRIP 46T.................................................. 4-20
4.7.5 T8: LOSS OF FIELD PROTECTION ZONE 1 40-1.................................4-22
4.7.6 T9: LOSS OF FIELD PROTECTION ZONE 2, 40-2................................4-23

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4.7.7 T10: ANTI-MOTORING & SEQUENTIAL TRIP SUPERVISION 32-1 .....4-23
4.7.8 T11: ANTI-MOTORING 32-2 ................................................................... 4-24
4.7.9 T12: TIME OVERCURRENT WITH VOLTAGE RESTRAINT 51V ..........4-24
4.7.10 T13: ACCIDENTAL ENERGIZATION AE ................................................ 4-25
4.7.11 T14: STATOR GROUND ZONE 1 64G1 ................................................. 4-27
4.7.12 T15: STATOR GROUND ZONE 2 64G2 ................................................. 4-28
4.7.13 T16: VOLTS/HERTZ OVEREXCITATION ALARM 24A .......................... 4-30
TEST RESULTS:.......................................................................................... 4-30
4.7.14 T17: VOLTS/HERTZ OVEREXCITATION TRIP 24T............................... 4-31
4.7.15 T18: POSITIVE-SEQUENCE OVERVOLTAGE 59..................................4-32
TEST RESULTS........................................................................................... 4-32
4.7.16 T19: UNDERFREQUENCY UNIT #1 81-1U ............................................ 4-33
4.7.17 T20: UNDERFREQUENCY UNIT #2 81-2U ............................................ 4-33
4.7.18 T21: UNDERFREQUENCY UNIT #3 81-3U ............................................ 4-34
4.7.19 T22: UNDERFREQUENCY UNIT #4 81-4U ............................................ 4-34
4.7.20 T23: OVERFREQUENCY UNIT #1 81-1O............................................... 4-35
4.7.21 T24: OVERFREQUENCY UNIT #2 81-2O............................................... 4-35
4.7.22 T25: OVERFREQUENCY UNIT #3 81-3O............................................... 4-36
4.7.23 T26: OVERFREQUENCY UNIT #4 81-4O............................................... 4-36
4.7.24 T27: VOLTAGE TRANSFORMER FUSE FAILURE VTFF ...................... 4-37
4.7.25 T28: TOC GROUND OVERCURRENT 51GN.........................................4-37
4.7.26 T29: UNDERVOLTAGE 27...................................................................... 4-38
4.7.27 T30: THIRD HARMONIC NEUTRAL UNDERVOLTAGE 27TN...............4-38
4.8 END OF ACCEPTANCE TESTING
4.8.1 DESCRIPTION ........................................................................................ 4-40
5. PERIODIC TESTS 5.1 INTRODUCTION
5.1.1 DESCRIPTION .......................................................................................... 5-1
5.1.2 GENERAL TESTS .....................................................................................5-1
5.1.3 PROTECTION FUNCTION TESTS ........................................................... 5-1
5.1.4 GENERAL INSTRUCTIONS...................................................................... 5-1
5.2 RELAY TESTS
5.2.1 T1: RELAY STATUS & MMI ...................................................................... 5-2
a STATUS CHECK ....................................................................................... 5-2
b DISPLAY TEST.......................................................................................... 5-2
5.2.2 T2: DIGITAL OUTPUT TEST..................................................................... 5-3
5.2.3 T3: DIGITAL INPUT TEST......................................................................... 5-4
5.2.4 T4: AC SYSTEM INPUT TEST.................................................................. 5-5
5.3 MEASURING UNIT TESTS
5.3.1 DESCRIPTION .......................................................................................... 5-6
5.3.2 T5: GENERATOR DIFFERENTIAL TEST 87G .........................................5-6
5.3.3 T6: CURRENT UNBALANCE ALARM 46A ............................................... 5-6
5.3.4 T7: CURRENT UNBALANCE TRIP 46T....................................................5-7
5.3.5 T8: LOSS OF EXCITATION 40-1 ..............................................................5-8
5.3.6 T9 ANTI-MOTORING TEST 32-1 ..............................................................5-9
5.3.7 T10: TIME OVERCURRENT WITH VOLTAGE RESTRAINT 51V ..........5-10
5.3.8 T11: STATOR GROUND ZONE 1 64G1 ................................................. 5-11
5.3.9 T12: STATOR GROUND ZONE 2 64G2 ................................................. 5-11
5.3.10 T13: VOLTS/HERTZ OVEREXCITATION ALARM 24A .......................... 5-12
5.3.11 T14: VOLTS/HERTZ EXCITATION TRIP 24T.........................................5-13
5.3.12 T15: POSITIVE-SEQUENCE OVERVOLTAGE 59.................................. 5-14
5.3.13 T16: UNDERFREQUENCY UNIT #1 81-1U ............................................ 5-14
5.3.14 T17: OVERFREQUENCY UNIT #1 81-1O............................................... 5-15
5.3.15 T18: VOLTAGE TRANSFORMER FUSE FAILURE VTFF ...................... 5-15
5.3.16 T19: TOC GROUND OVERCURRENT 51GN.........................................5-16

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TABLE OF CONTENTS
5.3.17 T20: POSITIVE-SEQUENCE UNDERVOLTAGE 27............................... 5-17
5.4 END OF PERIODIC TESTING
5.4.1 ENDING PERIODIC TESTS.................................................................... 5-18
6. SERVICING 6.1 SPARES
6.1.1 DESCRIPTION .......................................................................................... 6-1
6.2 RELAY SELF-TESTS
6.2.1 DESCRIPTION .......................................................................................... 6-2
6.3 TROUBLESHOOTING
6.3.1 DESCRIPTION .......................................................................................... 6-4
6.3.2 USING THE INFORMATION STATUS COMMAND..................................6-4
6.3.3 SERVICING A CRITICAL FAILURE FAIL..................................................6-5
6.3.4 SERVICING A NON-CRITICAL FAILURE WARN..................................... 6-5
6.3.5 SERVICING SYSTEM STATUS FAILURES.............................................. 6-6
6.4 ERROR CODES
6.4.1 ERROR MESSAGES AT STARTUP ......................................................... 6-7
6.4.2 ERROR MESSAGES AT RUNTIME.......................................................... 6-9
7. SPECIFICATIONS 7.1 DGP SPECIFICATIONS
7.1.1 DESCRIPTION .......................................................................................... 7-1
7.1.2 PROTECTION FUNCTIONS AND SETTING RANGES............................ 7-2
8. INTERFACE 8.1 DISPLAY
8.1.1 DESCRIPTION .......................................................................................... 8-1
8.2 TARGET LEDs & TARGET RESET KEY
8.2.1 TARGET LEDs........................................................................................... 8-2
8.2.2 TARGET RESET KEY ............................................................................... 8-2
8.3 KEYPAD
8.3.1 DESCRIPTION .......................................................................................... 8-3
8.3.2 CLEAR KEY [CLR]..................................................................................... 8-3
8.3.3 PRINT KEY [PRT]...................................................................................... 8-4
8.3.4 ARROW KEYS........................................................................................... 8-4
8.3.5 ENTER KEY [ENT]....................................................................................8-4
8.3.6 DATA ENTRY KEYS.................................................................................. 8-4
8.3.7 END KEY [END]......................................................................................... 8-5
8.3.8 SETTINGS KEY [SET]............................................................................... 8-5
8.3.9 ACTIONS KEY [ACT]................................................................................. 8-7
1. DISABLE OUTPUTS .................................................................................. 8-7
2. ENABLE OUTPUTS ................................................................................... 8-7
3. TRIP............................................................................................................ 8-8
4. RESET........................................................................................................ 8-8
5. DATE/TIME................................................................................................. 8-8
6. RELAY TEST.............................................................................................. 8-9
7. MMI TEST................................................................................................... 8-9
8. FIX UP SETTINGS CRC ............................................................................8-9
9. ENTER PASSWORD................................................................................ 8-10
10. CHANGE PASSWORD .......................................................................... 8-10
11. DIGITAL OUTPUT TEST........................................................................ 8-10
...................................................................................................................... 8-11

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8.3.10 INFORMATION KEY [INF]....................................................................... 8-12
1. REQUEST DGP STATUS......................................................................... 8-12
2. REQUEST FAULT INFORMATION..........................................................8-12
3. REQUEST PRESENT VALUES ............................................................... 8-13
4. REQUEST EVENTS.................................................................................8-13
5. VIEW PASSWORD...................................................................................8-13
6. REQUEST DGP MODEL/VERSION......................................................... 8-13
7. STATION ID..............................................................................................8-13
8. GENERATOR ID....................................................................................... 8-13
8.4 ERROR MESSAGES
8.4.1 DESCRIPTION ........................................................................................ 8-15
8.5 PASSWORDS
8.5.1 DESCRIPTION ........................................................................................ 8-16
8.5.2 ENCRYPTED PASSWORD CONVERSION TABLE ............................... 8-17
9. COMMUNICATIONS 9.1 INTRODUCTION
9.1.1 HARDWARE JUMPERS............................................................................ 9-1
9.1.2 MODEM CONNECTIONS & SETTINGS...................................................9-1
9.1.3 PC MODEM ............................................................................................... 9-1
9.1.4 DGP MODEM ............................................................................................ 9-2
9.1.5 NULL MODEM CONNECTIONS ............................................................... 9-2
9.1.6 RS485 COMMUNICATIONS ..................................................................... 9-4
9.2 MODBUS COMMUNICATIONS
9.2.1 INTRODUCTION ....................................................................................... 9-5
9.2.2 DATA FRAME FORMAT & DATA RATE...................................................9-5
9.2.3 DATA PACKET FORMAT..........................................................................9-5
a SLAVE ADDRESS.....................................................................................9-5
b FUNCTION CODE.....................................................................................9-6
c DATA ......................................................................................................... 9-6
d CRC HI & CRC LO.....................................................................................9-6
9.2.4 ERROR CHECKING.................................................................................. 9-6
9.2.5 DATA FRAMING........................................................................................ 9-6
9.3 MODBUS FUNCTIONS
9.3.1 FUNCTION CODE 03/04: READING HOLDING/INPUT REGISTERS......9-7
a DESCRIPTION .......................................................................................... 9-7
b QUERY ......................................................................................................9-7
c RESPONSE............................................................................................... 9-7
9.3.2 FUNCTION CODE 05: FORCE SINGLE COIL..........................................9-8
a DESCRIPTION .......................................................................................... 9-8
b QUERY ......................................................................................................9-8
c RESPONSE............................................................................................... 9-8
9.3.3 FUNCTION CODE 06: STORE SINGLE SETPOINT ................................ 9-9
a DESCRIPTION .......................................................................................... 9-9
b QUERY ......................................................................................................9-9
c RESPONSE............................................................................................... 9-9
9.3.4 FUNCTION CODE 16: PRESET MULTIPLE SETPOINTS......................9-10
a DESCRIPTION ........................................................................................ 9-10
b QUERY .................................................................................................... 9-10
c RESPONSE............................................................................................. 9-10
9.3.5 FUNCTION CODE 56: RETRANSMIT LAST PACKET ........................... 9-10
a DESCRIPTION ........................................................................................ 9-10
b QUERY .................................................................................................... 9-10
c RESPONSE............................................................................................. 9-10
9.4 MODBUS ERRORS
9.4.1 ERROR RESPONSES............................................................................. 9-11