GE DGP Series - Default Chapter; Table of Contents

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