Schweitzer Engineering Laboratories SEL-300G - Section 2: Relay Element Settings

SEL-300G Instruction Manual Date Code 20020206
TABLE OF CONTENTS
SECTION 2:
RELAY ELEMENT SETTINGS ..........................................2-1
Relay Functional Overview...........................................................................................................2-1
Data Acquisition and Filtering..............................................................................................2-1
Element Processing ...............................................................................................................2-2
Relay Word ...........................................................................................................................2-2
SELOGIC
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Control Equations................................................................................................2-2
Background Tasks .................................................................................................................2-2
Relay Settings Overview...............................................................................................................2-2
Protection Element Selection Guidelines......................................................................................2-5
Relay Configuration Settings ........................................................................................................2-6
Group 1, Group 2 Configuration Setting Descriptions .........................................................2-6
Global Configuration Setting Descriptions (SET G) ............................................................2-9
Setting Group Selection...............................................................................................2-11
BKR Monitor...............................................................................................................2-11
Optioisolated Input Timers..........................................................................................2-11
Local Bit Settings ........................................................................................................2-11
Display Point Settings .................................................................................................2-11
Phase Mho Distance Element .....................................................................................................2-11
Element Description............................................................................................................2-11
Functional Description ................................................................................................2-11
Setting Descriptions ....................................................................................................2-12
Relay Word Bits ..........................................................................................................2-14
Setting Calculation ..............................................................................................................2-14
Information Needed.....................................................................................................2-14
Recommendations .......................................................................................................2-14
Phase Distance Tripping..............................................................................................2-15
Element Operating Characteristics......................................................................................2-16
Volts/Hertz Element....................................................................................................................2-17
Element Description............................................................................................................2-17
Functional Description ................................................................................................2-17
Setting Descriptions ....................................................................................................2-18
Relay Word Bits ..........................................................................................................2-20
Setting Calculation ..............................................................................................................2-20
Information Needed.....................................................................................................2-20
Recommendations .......................................................................................................2-20
Volts/Hertz Tripping ...................................................................................................2-20
Element Operating Characteristics......................................................................................2-21
Reverse/Low-Forward Power Element .......................................................................................2-25
Element Description............................................................................................................2-25
Functional Description ................................................................................................2-25
Setting Descriptions ....................................................................................................2-26
Relay Word Bits ..........................................................................................................2-27
Setting Calculation ..............................................................................................................2-27
Information Needed.....................................................................................................2-27