GE D30 Instruction Manual page 7

TABLE OF CONTENTS
7 COMMANDS AND
TARGETS
8 APPLICATION OF
SETTINGS
9 THEORY OF
OPERATION
D30 LINE DISTANCE PROTECTION SYSTEM - INSTRUCTION MANUAL
6.3.6 RxGOOSE analogs ................................................................................................................6-18
6.3.7 Transducer inputs/outputs ..............................................................................................6-19
6.3.8 Distance....................................................................................................................................6-19
6.4 Records............................................................................................................. 6-20
6.4.1 Fault reports ...........................................................................................................................6-20
6.4.2 Event records .........................................................................................................................6-21
6.4.3 Oscillography .........................................................................................................................6-21
6.4.4 Breaker maintenance.........................................................................................................6-22
6.5 Product information ...................................................................................... 6-22
6.5.1 Model information................................................................................................................6-22
6.5.2 Firmware revisions ..............................................................................................................6-23
7.1 Commands menu ............................................................................................. 7-1
7.1.1 Virtual inputs ............................................................................................................................ 7-2
7.1.2 Clear records ............................................................................................................................ 7-2
7.1.3 Set date and time................................................................................................................... 7-3
7.1.4 Relay maintenance................................................................................................................ 7-3
7.1.5 Security ....................................................................................................................................... 7-4
7.2 Targets menu .................................................................................................... 7-4
7.2.1 Target messages .................................................................................................................... 7-5
7.2.2 Relay self-tests ........................................................................................................................ 7-5
8.1 Application guidelines ..................................................................................... 8-1
8.1.1 Overview..................................................................................................................................... 8-1
8.1.2 Impact of memory polarization....................................................................................... 8-1
8.1.3 High set overcurrent elements ........................................................................................ 8-1
8.2 Distance elements (stepped distance scheme) .......................................... 8-2
8.2.1 Phase distance ........................................................................................................................ 8-2
8.2.2 Ground distance ..................................................................................................................... 8-3
8.3 Series compensated lines ............................................................................... 8-5
8.3.1 Overview..................................................................................................................................... 8-5
8.3.2 Distance...................................................................................................................................... 8-6
8.3.3 Ground directional overcurrent....................................................................................... 8-7
8.3.4 High-set phase overcurrent .............................................................................................. 8-7
8.4 Phase distance through power transformers............................................. 8-8
8.4.1 Phase distance protection ................................................................................................. 8-8
8.4.2 Example ...................................................................................................................................... 8-9
9.1 Distance elements............................................................................................ 9-1
9.1.1 Overview..................................................................................................................................... 9-1
9.1.2 Phasor estimation.................................................................................................................. 9-2
9.1.3 Distance characteristics ..................................................................................................... 9-2
9.1.4 Fast distance algorithm ...................................................................................................... 9-7
9.1.5 Memory polarization............................................................................................................. 9-7
9.1.6 Distance elements analysis............................................................................................... 9-8
9.2 Phase distance applied to power transformers ....................................... 9-11
9.2.1 Description ..............................................................................................................................9-11
9.2.2 Example ....................................................................................................................................9-14
9.3 Ground directional overcurrent .................................................................. 9-16
9.3.1 Description ..............................................................................................................................9-16
9.3.2 Example ....................................................................................................................................9-17
9.4 Series compensated lines ............................................................................. 9-17
9.4.1 Description ..............................................................................................................................9-17
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