GL.10
SEL-421 Relay Date Code 20090715
Glossary
Fast Message—GOOSE
Fast Message
SEL binary serial port protocol used for Fast SER, Fast Message
Synchrophasors, and RTD communications.
Fault Type
Identification Selection
Logic the relay uses to identify balanced and unbalanced faults (FIDS).
FID
Relay firmware identification string. Lists the relay model, firmware version
and date code, and other information that uniquely identifies the firmware
installed in a particular relay.
Firmware
The nonvolatile program stored in the relay that defines relay operation.
Flash Memory
A type of nonvolatile relay memory used for storing large blocks of
nonvolatile data.
Flashover
A disruptive discharge over the surface of a solid dielectric in a gas or liquid.
Float High
The highest charging voltage supplied by a battery charger.
Float Low
The lowest charging voltage supplied by a battery charger.
Free-Form Logic
Custom logic creation and execution order.
Free-Form SELOGIC
Control Equations
Free-form relay programming that includes mathematical operations, custom
logic execution order, extended relay customization, and automated operation.
FTP
File transfer protocol.
Function
In IEC 61850, task(s) performed by the substation automation system, i.e., by
application functions. Generally, functions exchange data with other
functions. Details are dependent on the functions involved.
Functions are performed by IEDs (physical devices). A function may be split
into parts residing in different IEDs but communicating with each other
(distributed function) and with parts of other functions. These communicating
parts are called logical nodes.
Function Code
A code that defines how you manipulate an object in DNP3 protocol.
Functional Component
Portion of a UCA GOMSFE brick dedicated to a particular function including
status, control, and descriptive tags.
Fundamental Frequency
The component of the measured electrical signal with a frequency equal to the
normal electrical system frequency, usually 50 Hz or 60 Hz. Generally used to
differentiate between the normal system frequency and any harmonic
frequencies present.
Global Settings
General settings including those for relay and station identifiers, number of
breakers, date format, phase rotation, nominal system frequency, enables,
station dc monitoring, control inputs, settings group selection, data reset
controls, frequency tracking, time and date management, and current and
voltage source selection.
GOMSFE
Generic Object Model for Substation and Feeder Equipment; a system for
presenting and exchanging IED data.
GOOSE
IEC 61850 Generic Object Oriented Substation Event. GOOSE objects can
quickly and conveniently transfer status, controls, and measured values among
peers on an IEC 61850 network.
Courtesy of NationalSwitchgear.com
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