ABB Relion 630 Series, Техническое руководство

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The function execution requires that at least one of the function
outputs is connected in configuration.
The operation of the station battery supervision function can be described by using a
module diagram. All the modules in the diagram are explained in the next sections.
GUID-800F5217-5187-4686-8C71-EDB4288A849E V1 EN
Figure 125: Functional module diagram
The battery rated voltage is set with the Battery voltage Rtg setting. The value of the
Low battery value and High battery value settings are given in relative per unit to the
Battery voltage Rtg setting.
Level detector 1
The level detector compares the battery voltage
U_BATT_IN
to the set value of the
Low battery value setting. If the value of
U_BATT_IN
input drops below the value of
the Low battery value setting, the level detector sends an enabling signal to the timer
1 module.
The measured voltage between the battery terminals U_BATT is available in
monitored data view.
Level detector 2
The level detector compares the battery voltage
U_BATT_IN
to the set value of the
High battery value setting. If the value of
U_BATT_IN
exceeds the set value of the
High battery value setting, the level detector sends an enabling signal to the timer 2
module.
Timer 1
Once activated, the timer activates the
ST_ULOW
output for undervoltage condition.
When the operate timer has reached the value set by the Alarm delay time setting, the
AL_ULOW
output is activated. If the voltage returns to normal value before the module
operates, the reset timer is activated. If the reset timer reaches the value set by Reset
delay time , the operate timer resets and the
ST_ULOW
output is deactivated.
The activation of the
BLOCK
input resets the timer and deactivates the
ST_ULOW
and
AL_ULOW
outputs. The activation of
BLK_ST
and
BLK_AL
blocks the individual
start and alarm outputs respectively.
Section 5
1MRS757256 F
Supervision functions
192 PML630/Compact Load-Shedding Solution
Technical Manual