GE D90 Plus, Инструкция по эксплуатации

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CHAPTER 10: DIGITAL FAULT RECORDER DISTURBANCE RECORDER
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 525
Disturbance recorder digital channels
Up to 32 digital channels may be assigned to the disturbance recorder. Each channel may
be individually configured by clicking the digital channels
Select button in the disturbance
recorder window to open the disturbance recorder digital channels window.
Figure 455: Digital channel configuration settings
The following settings are available for each disturbance recorder digital channel.
Signals
Range: any FlexLogic™ operand or shared operand
Default: Off
This setting selects an operand to act as a trigger for the digital channel.
The pull-down list of available signals is populated according to the protection functions
that have been enabled. Selected signals will be automatically assigned as channels and
as triggers according to their importance. These signals may be deactivated by the user.
For example, if ground time overcurrent 1 has been enabled, then the following
assignments are made.
Table 42: Example disturbance recorder signal assignment
Trigger
Range: Off, Trigger Only, Trigger/Re-Trigger, Re-Trigger Only
Default: Off
This setting selects the trigger function of the digital channel. When set to “Trigger Only”
or “Trigger/Re-Trigger”, the disturbance recorder will initiate data capture for an OFF-ON
transition of the channel signal. The resulting record will contain both pre-fault and fault
data and the channel must return to the off state before it can generate a subsequent
trigger.
Available signals Assignment
Digital channel
Trigger
GND TOC1 DPO Yes No
GND TOC1 OP Yes Yes
GND TOC1 PKP Yes No