GE D90 Plus - Using Shared Operands in Digital Fault Recorder

CHAPTER 10: DIGITAL FAULT RECORDER USING SHARED OPERANDS IN DIGITAL FAULT RECORDER
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 529
Block Trigger
Range: any FlexLogic operand
Default: Off
The FlexLogic operand assigned to this setting blocks triggering of the disturbance
recorder analog channel.
Figure 461: Analog channel trigger logic
Using shared operands in digital fault recorder
The EnerVista UR
Plus
Setup software groups the D90
Plus
system into the following eight
primary functions. Each function has its own settings and each generates its own outputs
in the form of operands.
• Communications
•Protection
•Automation
• Digital fault recorder (DFR)
• Metering
• Equipment manager
•Self-tests
• Front panel interface (HMI)
It is often desirable for an output from an element within one function to be available to an
element within another function. For example, it can be useful for the digital fault recorder
to record the output operands of any protection element. Consequently a fixed,
predetermined set of operands is available to each function, as shown.
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